hybridfree/eevblog-posts huggingface dataset:
Alternative to the AD5292 Digipot? - Page 1
Forum section: electronics / projects

author: MattHelm
author_rank: Newbie
timestamp: August 13, 2010, 08:51:24 pm
content: Ok, I am wanting to design an adjustable power supply. Woohoo, whatever.The rough specs are something like 1.2VDC - 30VDC @ 4A.I am thinking about using the LM2679 (a simple switching regulator), Adjustment is fairly trivial by using a voltage divider to drive the feedback input.So far, so good, nothing too exciting.Now, the fun part. I want to control the voltage divider using a Pic or other uC. The first thought that came to mind was "A digipot! No problem."Then I started thinking about the voltage divider... It feeds straight from the regulator's output (after some filtering). The digipot will see 30VDC on it's virtual wiper. That severely limits my digipot choices. The AD5292 will handle that as long as you supply it with a Vdd of greater than the V on the virtual contacts (with a max Vdd of 35V).Any other digipots that I don't know about that will handle those voltage levels?PS: I suppose I could use a DAC and a MOSFET, but at first blush the digipot route seems simpler.

author: migsantiago
author_rank: Frequent Contributor
timestamp: August 13, 2010, 09:15:35 pm
content: I also want to build an adjustable power supply and use a digital pot. I will use a Microchip digipot that only works from 0V to 5.5V, and then connect an opamp and amplify it's voltage output.I didn't know that there were digipots which could take voltages up to 35V. If there's one, please let us know.

author: MattHelm
author_rank: Newbie
timestamp: August 13, 2010, 09:27:08 pm
content: As noted above. the the AD5292 reportedly will. Unless I am misreading the specs. My eyes are trashed today.The product page:http://www.analog.com/en/digital-to-analog-converters/digital-potentiometers/ad5292/products/product.htmlActually, although Vdd max is 35V, recommended single supply max is 33V.ETA: I suppose I could use a lower rated digipot and an opamp as well. I will have to think about it in more detail. The essence is that the regulator will try to do what ever it takes to see 1.2V on it's feedback input. Using an opamp means an additional component and breaking up the feedback loop a bit. But it saves having to power the digipot with 33V. I'm starting to like it, thanks!
alternative to the HCNR201 - Page 1
Forum section: electronics / projects

author: namster
author_rank: Regular Contributor
timestamp: November 29, 2019, 05:16:12 pm
content: Hi ,i wan't to isolate a analog voltage the first circuit that i found is the HCNR201 wich have a very low Transfer Ratio that is a very critical parameter for a good analog isolation circuit , the problem is that i didn't find this component in my country , so what are the alternative for a good analog isolation ?

author: MagicSmoker
author_rank: Super Contributor
timestamp: November 30, 2019, 12:40:19 pm
content: IL300 dual photodiode optocoupler.

author: capt bullshot
author_rank: Super Contributor
timestamp: November 30, 2019, 01:17:09 pm
content: HCPL7800 and variety (there's a whole product family of such couplers available from broadcom).It's a different thing than the HCNR201, easy to use but noisy.

author: namster
author_rank: Regular Contributor
timestamp: December 01, 2019, 11:12:44 am
content: Thank you ,i can't found all the component you have cited i will try to purchase them from internet

author: MagicSmoker
author_rank: Super Contributor
timestamp: December 01, 2019, 10:39:09 pm
content: LOC110 and LOC111 - also dual photodiode optos.

author: exe
author_rank: Unknown
timestamp: December 07, 2019, 04:06:02 pm
content: Pretty much everything I was able to find is here:https://nl.mouser.com/Optoelectronics/Optocouplers-Photocouplers/High-Linearity-Optocouplers/_/N-6x5jj
Alternative to ultrafast HV diode - Page 1
Forum section: electronics / projects

author: Neukyhm
author_rank: Contributor
timestamp: November 10, 2017, 09:15:30 pm
content: Hi everyoneI'm looking for HV diodes for a 12 stages multiplier, an alternative to the 2CL2FM. It's a 20kV diode but it's extremely difficult to find. I have been able to buy it only on AliExpress, and the diodes I received are 12mm long and not 15mm like the datasheet says, so it's probably that the diodes are fake.So, do you know an alternative? 20Kv diode, 100mA, ultrafast and easier to find.I already tried looking on Mouser, RS, Farnell... but they don't have HV diodes, only up to 2kV or so.

author: tggzzz
author_rank: Super Contributor
timestamp: November 10, 2017, 10:46:48 pm
content: Possibly:http://hvstuff.com/high-voltage-diodes-and-rectifiersI haven't used them.

author: ahbushnell
author_rank: Frequent Contributor
timestamp: November 11, 2017, 12:18:46 am
content: VMI makes very nice high voltage diodes. I have used them for many years in high voltage switching power supplies.http://www.voltagemultipliers.com/html/diodes.html

author: Rbastler
author_rank: Frequent Contributor
timestamp: November 11, 2017, 02:05:18 pm
content: Try this shop:http://highvoltageshop.com/epages/b73088c0-9f9a-4230-9ffc-4fd5c619abc4.sf/de_DE/?ObjectPath=/Shops/b73088c0-9f9a-4230-9ffc-4fd5c619abc4/Categories/Seite__Kategorie1422391697005/11It has the diodes your'e looking for.
Alternative tool for TE connectors - Page 1
Forum section: electronics / projects

author: Simon
author_rank: Unknown
timestamp: April 24, 2014, 10:52:38 am
content: I'm learning to hate TE with a passion and i am starting to wonder is they sell connectors or fucking tools! they want over £1000 for a crimp tool that will crimp one contact size only and it's not even that special, just the usual fold me over and crush the wire tabs.Are there any generic tools out there that can do the same job ?
Alternative use of the screwdriver battery. - Page 1
Forum section: electronics / projects

author: costi_b
author_rank: Newbie
timestamp: April 22, 2024, 05:12:20 pm
content: Hi:I am trying to use a screwdriver battery to power a class D amplifier.My problem is that the battery automatically disconnects the output voltage after a few tens of seconds. This happens both when empty and with the amplifier connected.If I connect a constant load of 150 mA it does not stop.If I connect the constant load in parallel with the amplifier it still disconnects.It is about a Lexman Li-Ion battery, 20 V, 2.5 Ah.It seems that it complies with the UP20 (Universal Power 20V) specification, about which I did not find much information.Do you know a method to be able to use it?I have several batteries of this model and they would be extremely practical for powering the boombox.Battery model:https://www.leroymerlin.ro/produse/accesorii-unelte-motorizate/1053/acumulator-lexman-li-ion-20-v-2.5-ah/126814
Alternatives for 14.31818Mhz P/O Oscillator - Page 1
Forum section: electronics / projects

author: optoisolated
author_rank: Unknown
timestamp: March 29, 2016, 10:28:05 am
content: I'm building a project which makes use of a YM3812 OPL2 Generator and it requires a clock input of 3.58Mhz. Most of the sample circuits i've come across utilize a 14.31818 MHz Oscillator with a programmable output (f/4) to get the desired frequency with a stable enough output. These days, those oscillators seem to be rarer than hens teeth. Any suggestions on an oscillator to fit the bill and/or a way around said problem (with some magic MacGyvering, or some jellybean circuit which escapes my brain this evening, perhaps)? Scratching my head on this one for a while now.

author: danadak
author_rank: Super Contributor
timestamp: March 29, 2016, 02:08:14 pm
content: A number of vendors have PLL based programmable oscillators, Cypress comes tomind.http://www.cypress.com/products/clocks-buffersOr this, xtal + passives +http://www.ti.com/lit/ds/symlink/sn74lvc1gx04-ep.pdfRegards, Dana.

author: optoisolated
author_rank: Unknown
timestamp: March 30, 2016, 02:44:52 am
content: Right you are, I looked again and did end up finding a few suitable parts for my project. Didn't occur to me to look for the 3.579545Mhz models. Stability is not super critical but ideally it should be relatively stable. It seems I was able to find some with 100 PPM stability rating which should be more than ample.Part I chose:http://www.ecsxtal.com/store/pdf/ecs_2100.pdfCheers, all.
Alternatives for atmega328p-au due to stock issues - Page 1
Forum section: electronics / projects

author: gmc
author_rank: Regular Contributor
timestamp: February 18, 2022, 05:16:54 pm
content: With the ongoing stock shortages for the atmega328p-au and many other atmel microcontrollers which doesn't look like is going to be resolved anytime soon is it time to start redesigning my projects to use some other mcu? Or are there stock shortages with pretty much all mcu's now?Mouser listed eta for 2023I've got a project that uses a atmega328p-au with almost all 32k flash and 5 I/O pins and I sell about 10 of these PCB's a month.Is it worth redesigning the hardware and software for some other mcu that there is plenty stock of? (In the same price range) Or are there stock issues across the board with all mcu's?I looked at the STM32 but there are similar stock issues there too.

author: caulktel
author_rank: Contributor
timestamp: February 18, 2022, 06:11:13 pm
content: On another Ham Radio forum, they are saying that these can be used for Atmega328p-au replacments, YMMV:https://lcsc.com/product-detail/MICROCHIP_Microchip-Tech-ATMEGA328PB-AU_C132230.htmlhttps://lcsc.com/product-detail/MICROCHIP_Microchip-Tech-ATMEGA328PB-AUR_C461612.htmlJoelN6ALT

author: caulktel
author_rank: Contributor
timestamp: February 18, 2022, 06:13:17 pm
content: I see the AUR version is already out of stockJoelN6ALT

author: gmc
author_rank: Regular Contributor
timestamp: February 18, 2022, 06:20:01 pm
content: Both out of stock at the usual places.

author: jaycee
author_rank: Regular Contributor
timestamp: February 18, 2022, 11:17:18 pm
content: If you dont need the full 32K of Flash, you could use one of the pin compatible parts which has less memory. Thats one of the beauties of the AVR series
Alternatives to DRV5057 chip, for motor commutation - Page 1
Forum section: electronics / projects

author: anda3243
author_rank: Contributor
timestamp: January 15, 2023, 03:40:14 am
content: I am making a commutation sensor based on 2 HALL sensors. I have attached some files so it is easier to explain. I use 2 pcs hall sensors that are rotated 90 degrees apart. These sensors sense a magnet that is on the end of the rotor. From this sensor I get 2 sinus waves that indicate the rotor position. I can get absolute position, and motor direction from any starting point. All is good so far.My questions. I hope the forum can help.Does anyone know of some alternative to the DRV5057 chip?I wanted to use the TI DRV5057 hall sensor. This sensor would give a digital PWM output, perfect for the GPIO pins. Unfortunately I can not get these sensors in below 1.5 usd per piece. I would think that a HALL with a PWM output is not that hard to make.I have found many alternatives for a linear hall sensor. Analog output proportional to the magnetic field.I am a little hesitant dealing with analog signals. The MCU has ADC, so it should be OK.Should I add some capacitors and resistors as filters? Anything else I should look out for with analog signal?Are my only options an overpriced DRV5057 or analog sensors?Thanks in advance!

author: bidrohini
author_rank: Regular Contributor
timestamp: January 16, 2023, 08:35:49 am
content: You can consider A1354.The A1354 programmable two-wire Hall-effect linear sensor features a PWM output. The duty cycle of the PWM output signal is proportional to an applied magnetic field. The A1354 converts an analog signal from its internal Hall sensor element to a digitally encoded PWM output signal.

author: anda3243
author_rank: Contributor
timestamp: January 16, 2023, 01:16:05 pm
content: Quote from: bidrohini on January 16, 2023, 08:35:49 amThank you for your answer. This would be a great component, but is obsolete and trough hole mount. Otherwise maybe not that different from DRV5057.I have attached a list with all the sensors I have looked at. I have looked at a couple of more complex sensors, where 2 or more hall elements are integrated in one chip. But the ones I have seen are ether unavailable, pricey or have some other limitation. Any more suggestion would be welcome.

author: bidrohini
author_rank: Regular Contributor
timestamp: January 16, 2023, 02:06:57 pm
content: Quote from: anda3243 on January 16, 2023, 01:16:05 pmThanks a lot. Insufficient supply of chips is a big problem now.
Alternatives to LMC7660 voltage inverter - Page 1
Forum section: electronics / projects

author: AussieBruce
author_rank: Regular Contributor
timestamp: July 08, 2021, 06:50:50 am
content: Hi, I came across a post here recently that mentioned a 'better' alternative to the 7660, but can't find it again. Can someone let me know the device?

author: gamalot
author_rank: Super Contributor
timestamp: July 08, 2021, 07:39:59 am
content: Do you mean REG710xx or LM2776?https://www.eevblog.com/forum/projects/charge-pump-vs-lmc7660-for-negative-voltage-inverter/msg3594218/#msg3594218

author: Bassman59
author_rank: Super Contributor
timestamp: July 08, 2021, 07:18:09 pm
content: Quote from: AussieBruce on July 08, 2021, 06:50:50 amDefine "better."More output current? Better load regulation? Higher switching frequency?There are lots of inverting charge-pump regulators available.

author: Analog4
author_rank: Contributor
timestamp: July 10, 2021, 12:36:44 am
content: https://www.ti.com/power-management/non-isolated-dc-dc-switching-regulators/buck-boost-inverting/buck-boost-inverting-split-rail-converters-integrated-switch/products.html#p1129=Inverting
Alternatives to pin Headers - Page 1
Forum section: electronics / projects

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: December 25, 2019, 11:16:45 am
content: Hi,The Jelly Bean and cheapest connectors for connecting various PCB boards for normal stuff(Not high speed) is pin headers, the Starlight and right angle ones. the main problem with them is their stacking height which is big for my new product. I'm designing a new series of products, they are low profile products, so I need some replacement for these pin headers, I want to connect Different PCB boards together, the connections vary from 8-10 pin to 60-80 connections, I need right angle and straight versions, so do you recommend any better alternative with similar prices to pin headers? the preferred max height is under 5 or 6mm. I prefer chinese manufactures that can be sourced from LCSC too. but I would not restrict myself to only them.

author: andy3055
author_rank: Super Contributor
timestamp: December 25, 2019, 07:37:23 pm
content: You might find something on this site:https://sullinscorp.com/products/?filters=category:312&toggle=inThey seem to be very low profile for the in-line connectors.

author: andy3055
author_rank: Super Contributor
timestamp: December 25, 2019, 07:39:13 pm
content: Here is another one:https://neoconix.com/pcbeam-lpm-connectors-signal-power/

author: kjr18
author_rank: Regular Contributor
timestamp: December 27, 2019, 06:59:44 pm
content: If pin pitch is not a big problem, you could always try 1.27mm pin headers. They're smaller, about 4.5mm height for female ones, and male ones about 1mm (only this black part).
Alternatives to the BAS416 - Page 1
Forum section: electronics / projects

author: TheUnnamedNewbie
author_rank: Super Contributor
timestamp: February 23, 2018, 06:56:49 am
content: Hi guys,I'm working on a project where I would like to protect the input of some precision opamps from large differential voltages. To do so, I would like to use two antiparallel diodes on the inputs to limit the differential voltage possible.The opamps in question are being used in a transimpedance configuration for a current-output DAC. As a result, leakage current must be very low. Because of this I was looking at using the BAS416 diode, which has reverse leakage in the order of pA. However, they seem to be all sold out on the distributors. Farnell, RS, Digikey, Mouser, all have none in stock.Are there any alternatives that features similar extremely low leakage currents? Preferably in the same footprint since the PCBs are already out for manufacturing (stupid on my part, I know). In my case it does not have to be that extremely low, as my LSB corresponds to a few nA, but I would like to be sure that even in the worst case the diode will not be a limiting factor on my accuracy.What are some similar parts to the BAS416 with regards to reverse leakage?

author: ArdWar
author_rank: Frequent Contributor
timestamp: February 23, 2018, 08:39:10 am
content: BAV116?

author: floobydust
author_rank: Super Contributor
timestamp: February 23, 2018, 05:25:02 pm
content: ConsiderBAV199 dual-diodes.TheBAS45Ais 1nA (in the dark, 125V) but a big through-hole part.Beyond this you go to exotics likePAD "pico ampere diodes"
Alternatives to the Microchip BM83 Bluetooth module, since it's ages away. - Page 1
Forum section: electronics / projects

author: XOIIO
author_rank: Super Contributor
timestamp: January 24, 2022, 05:20:54 pm
content: Hey all, so I'm still working on and off on a custom bluetooth headset, and I stumbled across the Microchip BM83, which looks absolutely awesome. Pre-configured board, built in amplifier, easy config tool and the module has onboard USB so hopefully no fancy programmer needed.It was announced in 2019, but it's still not expected on Mouser (and probably digikey) until the end of October this year. "UUuuuuuuuhg.I got super excited about this because all of the cheap chinese headset boards seem to lack features I want, or have crap audio quality, and are impossible to configure to this depth.So, I'm hoping there are some currently available comparable solutions. Bluetooth 5.0 isn't really a strict thing I need, but would be nice to have, but I'm hoping to find a similar compact module, that has easy configuration, and build in amplifiers for headphone speaker outputs, a mic input, navigation keys, etc.I've ordered a fairly cheap set of BT 5.0 headphones on amazon as a possible candidate to cannibalize for this project but I'd really love to be able to custom name them, and tweak them in the depth that this Microchip product allows. I'm guessing there are some similar products from them, but it's quite the catalog and I'd love to hear from someone with hands on experience.edit: The BM63 looks like the predecessor, or one of them, having a look now but boy my reading through pdfs with this trackpad and small screen is annoying.

author: XOIIO
author_rank: Super Contributor
timestamp: January 24, 2022, 08:41:42 pm
content: So, I think the BM64 is what I need, and it's available on digikey, though I haven't placed an order yet, as I'm not too sure exactly how I need to hook up to it to program it.It has onboard USB, which I think I can just wire up to directly (the bm62 doesn't), but not sure if that will let me just use the software from the site to program it or not.Sounds like for some parts I might need an eeprom programmer. All the guides I can find are for using the dev board, which is way out of budget.Guess maybe I will just order it and see. It sounds like it should be pre-configured a bit anyhow, so hopefully functional off the batt though I would like to actually change it's config.
Alternatives to Trinamic stepper driver? - Page 1
Forum section: electronics / projects

author: Max2018
author_rank: Newbie
timestamp: August 18, 2022, 09:54:54 am
content: DELETED

author: mawyatt
author_rank: Super Contributor
timestamp: August 18, 2022, 01:14:25 pm
content: Long ago we evaluated a number of stepper motor controller/drivers for ultra-precision work (optical positioning) and selected the Trinamic devices. We found out about a dead zone issue with the Toshiba devices from a reliable source, and the horrid linearity issues with the TI devices.If you spend the time to study and experiment with the Trinamic devices you'll begin to appreciate the features and how well they work when setup properly (tuned) with the system.Trinamic Customer Service was non-responsive for us when they found out we weren't going to purchase 10,000 chips per year, so we were on our own to figure things out which we did after considerable efforts.We were working at sub-micron levels with NEMA 11 and NEMA 14 0.9 degree steppers mounted to precision THK linear rail stages with 1mm pitch, and required extremely smooth operation as well as quick response. Later we moved into the piezo electric stages with nanometer levels utilizing full custom developed controller/drivers for higher resolution needs.Don't know of another stepper source driver/controller device that's as good as Trinamic, once we figured them out they worked quite well.Why are you looking for a Trinamic alternative?Best,

author: langwadt
author_rank: Super Contributor
timestamp: August 18, 2022, 01:30:09 pm
content: Quote from: Max2018 on August 18, 2022, 09:54:54 amhttps://github.com/makerbase-mks/MKS-SERVO42B

author: langwadt
author_rank: Super Contributor
timestamp: August 18, 2022, 08:48:15 pm
content: Quote from: Max2018 on August 18, 2022, 08:31:51 pmthat's basically just FETs and gate drivers integrated

author: thm_w
author_rank: Super Contributor
timestamp: August 18, 2022, 10:14:53 pm
content: Hold up.This is a production product and not a hobby project?You are expecting other products to have the same patented features that Trinamic has?Why would additional circuit protection not protect the IC from blowing up? Are you sure no rail voltages were exceeded, etc.https://www.eevblog.com/forum/beginners/thermal-fuseprotection-ic-with-external-thermistor/From your past thread its really not clear you've found out what the cause of the issue is, other than to say its reproduceable. I don't think you've proven YET that its trinamics "fault". And even if it was, is it just on this one IC? Or all of their ICs?The MKS-SERVO project is based on the nano-stepper/Mechaduino/etc While SOME of these features may exist in the software, they are not highly polished, and it would involve a LOT of firmware work on your end to polish them. Which I really do not think you would be willing or capable of doing at this point in time.

author: ebclr
author_rank: Super Contributor
timestamp: August 19, 2022, 01:15:06 am
content: I tested 3 fully mounted motorshttps://github.com/makerbase-mks/MKS-SERVO42Cworks great
Alternatives to VFC110 - Page 1
Forum section: electronics / projects

author: alexo
author_rank: Contributor
timestamp: August 10, 2017, 10:31:13 pm
content: Is there any cheaper alternative for VCF110AP ? Capable of ZERO to some 4MHz square wave ? I would appreciate any suggestions.

author: danadak
author_rank: Super Contributor
timestamp: August 11, 2017, 12:58:01 am
content: Do you have a datasheet you can post ?Regards, Dana,
Alticam Stabilized Camera Gimbals - Page 1
Forum section: electronics / projects

author: macona
author_rank: Regular Contributor
timestamp: January 24, 2014, 10:33:48 pm
content: This is a software question that might be considered hardware as well. This is a total long shot but I figure it is worth a try.Recently I got ahold of some Alticam stabilized camera turrets made by Hood Tech in Hood River, OR. These gimbals are used in the old Insitu Seascan as well as they current Insitu/Boeing Scaneagle. They are pretty neat, the old Alticam 400s use faulhaber zero backlash geared steppers for movement driven by JRC NJU39610 micro stepping controller with the JRC NJM3771 stepper driver. Stabilization feedback is through two MEMS gyroscopes by Silicon Sensors. Each axis is controlled by a TI M430f149 uC. It looks like they talk to each other and are slaved off additional M430's through a common serial bus.The newer ones are even fancier. They use the same stepper motors but between that and the axis there is an additional rotary voice coil actuator to handle tracking and stabilization. At least that is my best guess.And that's the problem. There is virtually zero documentation in these gimbal systems out there short of data sheets. I tried calling Hood Tech and well... The guy I talked to was unhelpful, and that is putting it nicely. He wanted me to explain why it would be in his best interest to help me and later told me he didn't think he even wanted me to get it working.Nice.Weird company too. You look up their address and it takes you either vacant lots or strip malls. They seem to make turbine vibration equipment, stabilized cameras, surfboards and have patents for baby strollers.I managed to find this thesis which mentions a little about the serial protocol to talk to the camera.http://www.dtic.mil/get-tr-doc/pdf?AD=ADA493888So has anyone ever dealt with Alticam? I know this is a longshot.Next step is to hook up the bus pirate to it and see if the jtag fuse had been blown.Just in case anyone is wondering, they are not export controlled, some of the cameras used in them are thermal IR which are ITAR controlled.

author: echen1024
author_rank: Super Contributor
timestamp: January 25, 2014, 04:13:27 am
content: Typical US military contractor arrogant attitude.
Altium 17, Polygon repour doesn't work, why? - Page 1
Forum section: electronics / projects

author: alonper
author_rank: Newbie
timestamp: August 13, 2018, 02:02:56 pm
content: Hi,I am trying to create GND polygons, at the start everything was ok, but now it seems that I am doing something wrong.I took a video for trying to create a polygon, while after placing the vertices, "repour all" or "repour selected" doesn't affect.what am I doing wrong?here you can see the video :https://drive.google.com/open?id=1573pc0AWkbVixv5C8a6ng7f_SJbnUt_E*** OK I just found that the video didn't capture my attempts to "repour selected" and "repour all" , but I did, it just the video game bar that doesn't snap it.. ***Thanks in advance,Alon
ALTIUM 20 BUS with DIFFERENTIAL LINE - Page 1
Forum section: electronics / projects

author: diego.tagnani
author_rank: Newbie
timestamp: September 04, 2020, 09:45:14 am
content: Hi everyone. I have a big problem with an ALTIUM project.I have a hierarchical block with differential ports. It is repeated 12 times.These differential lines must go on connector.The bus joins all the lines of the block with the name SiPM_K or A [1..12]. For the differential lines on the connector use _P or _N.The compiler gives me an error, looks for the twisted pair on the name of the bus net and fails to match the two lines of the twisted pair.I attach the schematics section and error lineCan anyone tell me how I can solve the problem?Thanks for help.

author: voltsandjolts
author_rank: Unknown
timestamp: September 04, 2020, 10:37:44 am
content: Please do not double post.You put the same query here:https://www.eevblog.com/forum/projects/altium-differential-signals-harnesses-and-net-labeling/msg3217748/#msg3217748Also, you should use the Altium board on this forum, here:https://www.eevblog.com/forum/altium/New topic here:https://www.eevblog.com/forum/altium/altium-20-bus-with-differential-line-252736/Mods: please delete/lock this topic.
Altium 3D issue - Page 1
Forum section: electronics / projects

author: docmur
author_rank: Regular Contributor
timestamp: October 10, 2013, 10:24:38 pm
content: I know this might not be the best place to ask this question but I figure someone has come across this issue. When ever I move to the 3D view of my PCB in Altium the components are green, it doesn't matter if I use steps models or default models. I've been through the menu but nothing jumped out that at me. Does anyone know how to fix this, I've included a picture for reference.

author: ludzinc
author_rank: Unknown
timestamp: October 10, 2013, 10:40:18 pm
content: You are failing a DRC. Could be clearance (what rules are you using?), or it could be complaining that your parts are outside the room definition.

author: Psi
author_rank: Super Contributor
timestamp: October 10, 2013, 10:43:07 pm
content: Damn i hate the room definition, i always delete it and set the options so it doesn't re-create.But yeah, as said above, run a 'design rule check' on the PCB and see what it says.You can also hold your mouse over components and get info, including any DRC errors, top left of the screen.

author: docmur
author_rank: Regular Contributor
timestamp: October 10, 2013, 10:59:13 pm
content: That did it, I had to right click the room and set the parts to outside. That was an easy fix.
Altium component download suddenly not available - Page 1
Forum section: electronics / projects

author: ricko_uk
author_rank: Super Contributor
timestamp: October 05, 2021, 04:38:14 pm
content: Hi,in Altium's Manufacturer's part search panel you can download the footprints. I have done that for months but today for some reason the download is disabled. See attached screenshot.When Altium sent the subscription renewal offer I was told that the download would still be available even without subscription which is the reason why I did not renew it when it expired few days ago.Was that once again incorrect information from Altium sales/support as usual?Thank you

author: nigelwright7557
author_rank: Frequent Contributor
timestamp: October 05, 2021, 05:57:49 pm
content: Use Ki-cad free for life and massive libraries.

author: ricko_uk
author_rank: Super Contributor
timestamp: October 06, 2021, 02:49:53 am
content: Any feedback anybody?Thank you

author: TheUnnamedNewbie
author_rank: Super Contributor
timestamp: October 06, 2021, 08:35:22 am
content: Quote from: nigelwright7557 on October 05, 2021, 05:57:49 pmThis is just in no way helpful at all and the kind of attitude that pushes people away from open-source programs in the first place.

author: voltsandjolts
author_rank: Unknown
timestamp: October 06, 2021, 08:53:03 am
content: Quote from: ricko_uk on October 05, 2021, 04:38:14 pmThat's ambiguous. Download of what?It's true that the download of the AD version (which you have a perpetual license for) will be available for download when your subscription expires.The Altium online component libraries are available for on-sub users only AFAIK.There used to be a big download of the Altium library that you could grab before going off sub, not sure if thats the case these days.

author: tszaboo
author_rank: Super Contributor
timestamp: October 06, 2021, 09:00:48 am
content: I've checked this part, and the Dowload is not greyed out. So I would assume it is indeed your subscription status.

author: 2N3055
author_rank: Super Contributor
timestamp: October 06, 2021, 10:11:23 am
content: Quote from: ricko_uk on October 05, 2021, 04:38:14 pmWhoever told you that is a Muppet.Online component search is subscription only feature, same as Circuit Studio (now Circuit Maker Pro).

author: ricko_uk
author_rank: Super Contributor
timestamp: October 06, 2021, 05:32:54 pm
content: that's what I thoughtThank you all,

author: Someone
author_rank: Super Contributor
timestamp: October 06, 2021, 11:02:48 pm
content: Quote from: 2N3055 on October 06, 2021, 10:11:23 amOr the subtleties of communications:your downloaded footprints remain accessible, yesdownload footprints remains accessible, noSales/marketing love to walk that line of barely comprehensible and potentially misleading yet technically honest.

author: jeremy
author_rank: Super Contributor
timestamp: October 12, 2021, 01:29:56 am
content: Just fixed this problem; we were running AD20 but with a valid subscription and could not download components. Upgrading to latest v21 solved it. So I suppose Altium have broken the infrastructure for AD20 installations.
Altium Designer - how to enable/select SMD footprints for resistor/capacitors? - Page 1
Forum section: electronics / projects

author: eV1Te
author_rank: Regular Contributor
timestamp: December 26, 2013, 05:54:49 pm
content: I have recently gotten the chance to try out Altium Designer (winter project over the Christmas holiday)But I immediately ran into a small problem that probably is very easy to solve for someone more experienced:Using "Miscellaneous Devices.IntLib" and placing a resistor (res1) in my schematic using the place part command, there is only one footprint that I can select from "AXIAL-0.3".I have to manually go into the footprint manager and add the RESC2012N (metric 0805 footprint) to this resistor from the "Chip_Resistor_N.PcbLib" footprint library. Or any other footprint for that matter (this is the same for capacitors and all other components).Checking tutorials on Youtube, this 0805 footprint should be available already while placing the part in the first place, so this leads me to think that my libraries are not linked/installed properly?

author: marshallh
author_rank: Unknown
timestamp: December 26, 2013, 06:00:18 pm
content: I don't have a proper answer for you, but the way I solved that one is to make my own library. it contains every symbol/package I've used on a pcb so far. Parts of it were brought in from copy/pasting the IPC libs. Vincent posted his altium library which is a good starting point. Search "free_electron library". A couple of his debug jumpers made it on my last pcb

author: eV1Te
author_rank: Regular Contributor
timestamp: December 26, 2013, 08:50:34 pm
content: Thanks, I always assumed that I would have to do my own footprints for more serious projects in the future. But straight out of the box I assumed that it would have a simple way of adding resistors and capacitors at least!I added free_electrons library and now I can finally start learning the software!Here is the link for future users, and many thanks to free_electron!http://www.siliconvalleygarage.com/downloads/altium-library.html
Altium Designer - Room Definitions? Beginner here - Page 1
Forum section: electronics / projects

author: somuchtyler
author_rank: Contributor
timestamp: August 30, 2021, 08:21:40 pm
content: Hello, I am trying to make something in Altium Designer and whenever I run my Design Rule check it complains about all my components violating room definitions. I have absolutely no idea how to fix this, I have been googling for what seems like days...

author: tmadness
author_rank: Regular Contributor
timestamp: August 31, 2021, 12:41:27 am
content: Two options, say duck it and delete the rooms if you are not using them.OrMake sure your rooms are appropriately placed on top of the components. A few tips,By default the parts move if the room moves be careful it may mess stuff up.Components in the room definition can be checked by double click the room and clicking the test query button then click on the number of matches to show the components in the room.

author: Bud
author_rank: Super Contributor
timestamp: August 31, 2021, 02:29:40 am
content: https://www.altium.com/documentation/altium-designer/workspacemanager-dlg-projectpropertiesdialog-pagecontrol-main-classgenerationproject-options-class-generation-ad?version=17.1Uncheck "Generate Rooms" if you are not using them.

author: tooki
author_rank: Super Contributor
timestamp: August 31, 2021, 08:09:47 am
content: Can someone explain what rooms are actually for?

author: tmadness
author_rank: Regular Contributor
timestamp: August 31, 2021, 04:17:03 pm
content: simply put: rooms area way of bringing in design level (schematic) associative information into a PCB layout. By default, altium generates a room per schematic sheet. You can get rid of rooms if you don't want to use them. Rooms are the way may design automation tasks are performed.

author: radar_macgyver
author_rank: Frequent Contributor
timestamp: August 31, 2021, 09:09:55 pm
content: One use for them is multichannel designs. You put everything that gets repeated in a room, then duplicate the rooms as needed (with optional rotation). The one time I used AD for a multichannel design (~10 years ago) this was the way to do it. Every other time, rooms just get in my way.

author: ajb
author_rank: Super Contributor
timestamp: September 01, 2021, 12:45:48 am
content: Multichannel designs are probably the only time rooms are useful for most people. You can also use them to define areas where rules can deviate from the default, for example allowing tighter clearances in the escape routing of a challenging package. Unfortunately, like so many aspects of Altium, they're a good idea with a pretty crummy implementation and are often more trouble than they're worth.

author: tooki
author_rank: Super Contributor
timestamp: September 01, 2021, 05:06:55 am
content: Thanks for the info!
Altium Designer - updating 3D model after board has been laid out - Page 1
Forum section: electronics / projects

author: tree
author_rank: Regular Contributor
timestamp: May 31, 2014, 03:36:17 pm
content: Is there a way to update the 3D models from the libraries after the fact? I found that I can update most of the properties of the model EXCEPT the 3D model. I have laid out the board, but since then I have added a 3D model to the library and haven't found a way to update the footprint to include the 3D model.Thanks.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: May 31, 2014, 03:43:26 pm
content: With the PCB open, go to the library, and in the PCBLIB viewer, right-click the part and select Update PCB With Selected.Also, make sure the mechanical layers (or wherever the model is) are visible in the PCB view (particularly in 3D).Tim

author: tree
author_rank: Regular Contributor
timestamp: May 31, 2014, 03:51:31 pm
content: That worked very well. Thanks!
Altium - Excluding a schematic from being used to generate board - Page 1
Forum section: electronics / projects

author: tree
author_rank: Regular Contributor
timestamp: May 09, 2014, 06:19:08 pm
content: I am working on a design in which the power supply for the circuit exists on a separate sheet from the circuit itself. I have it there for documentation purposes and don't want the components to be imported into the board layout. How do I exclude the sheet from the "changes importer"?Thanks.

author: TVman
author_rank: Frequent Contributor
timestamp: May 09, 2014, 06:32:53 pm
content: All you need is a LM317 and A potentiometer.

author: AlfBaz
author_rank: Super Contributor
timestamp: May 09, 2014, 07:20:12 pm
content: Quote from: tree on May 09, 2014, 06:19:08 pmUnless there's another solution you can open the schematic in question and select Place->Directives->CompileMask

author: tree
author_rank: Regular Contributor
timestamp: May 09, 2014, 10:12:31 pm
content: Quote from: AlfBaz on May 09, 2014, 07:20:12 pmThanks, that works. I wish there was a checkbox that I could check in some hidden properties menu that would do the same.
Altium Harness Design (Creating new components) - Page 1
Forum section: electronics / projects

author: fedimakni
author_rank: Regular Contributor
timestamp: September 02, 2025, 02:40:13 am
content: Hello,I want to start using altium's harness design feature. The connector's housing i want to use doesn't exist in the library provided by altium (manufacturer part search) so i need to get libraries from 3rd party or create my own.My questions are:1. How to create libraries for the harness design projects?2. Any website that provide libraries like snapeda or componentsreach for regular PCB libraries?3. Is there a way to integrate those libraries to the project? (i tried to check similar approach as PCB design and create schematic library and pcb library but those options ''adding specific local libraries to the project related to harness design'' doesn't exist)Detailed information are not provided in the website and also it doesn't seem to be a youtube video that explain that process.Thank you for your support.

author: thm_w
author_rank: Super Contributor
timestamp: September 03, 2025, 12:37:05 am
content: Click button bottom left and move the thread to the correct forum:https://www.eevblog.com/forum/altium/You create a normal parts library then add your connectors to that. As usual they try to get you to put everything in 365.There is a file ".harnesslib" but seems no way to create it. So just install the library and don't need to add it to the project.https://www.altium.com/documentation/altium-designer/harness-design#creating-a-harness-design---example-guidehttps://www.reddit.com/r/Altium/comments/1ghb6ew/harness_design/Seems you already watched this tutorial:
Altium Keepout clearance violation - Page 1
Forum section: electronics / projects

author: makni
author_rank: Newbie
timestamp: December 06, 2024, 03:39:21 am
content: Hello,i have a connector footprint which has a keepout of the top layer, the problem is as soon as i connect the track a clearance violation appeared.If i change the keepout restrictions in the footprint to allow tracks that will no longer be a keepout.Could anyone suggest how to solve it? If the problem can be solved in the footprint itself that will be the best scenario, other than that how can i set a custom query for it in the rules (i don't know too much about queries in altium)You can see the pictures attached for more details.Thank you.

author: Phoenix
author_rank: Frequent Contributor
timestamp: December 06, 2024, 04:20:44 am
content: It appears Altium uses clearance rules to keepouts as well, so the track landing on the pad is too close to the keepout region. If you run a DRC you might find all the pads appear to violate as well.You should be able to set a 0mm clearance to keepouts.https://fedevel.com/forum/altium-designer/14371-keepout-clearance

author: makni
author_rank: Newbie
timestamp: December 06, 2024, 04:40:06 am
content: It didn't work actually, because the keepout is only on top layer in the footprint but the iskeepout query is to all the keepout in the keepout layer so it doesn't work.

author: Phoenix
author_rank: Frequent Contributor
timestamp: December 06, 2024, 05:15:19 am
content: I'm running Altium 24. The IsKeepOut query for me finds keep out regions on any layer. I don't have a keepout in a footprint to test, but I don't see why it wouldn't work?
Altium  Keyboard shortcuts have stopped working (kind of...) - Page 1
Forum section: electronics / projects

author: TSR
author_rank: Newbie
timestamp: November 28, 2020, 02:55:53 am
content: I'm having a weird Altium problem: Most of the DXP keyboard shortcuts have suddenly stopped working - but only when doing PCB layout.For example:Ctrl+Arrow no longer nudges a selected object in any direction.Shift+S does not activate single layer view.Shift+F12 does not open the PCB List....but other shortcuts still work (like Ctrl+M initiates a measurement, Ctrl+Z undoes whatever was done).However in the Footprint editor the shortcut keys DO work (Ctrl+Arrow WILL nudge a selected pad, Shift+S will show only the active layer, etc).I have tired to reset everything to the default state through the DXP>Preferences - no go.I have restarted Altium - no go.I even uninstalled and reinstalled the bleed'n program - still the same.I have 2 versions of Altium installed (14.1 and 20.0) and the behavior is the SAME in BOTH!Earlier today all was normal, now it's fried - guess this is Altium bug No. 6546413546984635241686Anyone have any ideas how to get things back to normal?Many thanks in advance.

author: TSR
author_rank: Newbie
timestamp: December 20, 2020, 12:43:09 pm
content: Issue resolved (but of course others remain):To restore original short-cuts on the schematic screen go to View/Key Mappings and choose P-CAD mode.This is not available in Altium 20 and if you import a design from Altium 14 with the key mapping in Default mode then the standard short cuts will not work for the design in Altium 20 either.Also even with the key mapping in P-CAD mode, some shortcuts on the schematic page (in Altium 14) like rotate and mirror symbol now do not work.A general note on Altium (all versions): Altium is the least expensive PCB layout software on the market (between Cadence and Mentor) for a reason - it's crap. It's full of bugs (see above) and you spend no less than 25% of your time chasing down Altium anomalies rather than doing work.Everyone who I've met who works with Altium agrees, it's is used because it's cheap ... but it's full of bugs that no update ever fixes.

author: jmelson
author_rank: Super Contributor
timestamp: December 20, 2020, 05:46:15 pm
content: Quote from: TSR on December 20, 2020, 12:43:09 pmYup, that's why I'm still using Protel 99 SE. I have to do a bunch of stuff to make channelized designs (like a board with 16 identical amplifiers)but the advanced editing makes this not-too-painful. There ARE a few bugs, but the design rule check is rock solid, the rest I can deal with.Jon
Altium - permanently clearing design rule violation - Page 1
Forum section: electronics / projects

author: tree
author_rank: Regular Contributor
timestamp: June 01, 2014, 04:52:58 am
content: Is there a way to permanently clear/hide a specific (binary) design rule violation?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 01, 2014, 07:42:45 am
content: T, M? (clear markers)Otherwise, add a rule (D, R) specifically for it.Tim

author: tree
author_rank: Regular Contributor
timestamp: June 01, 2014, 02:55:59 pm
content: I realized my sentence is a bit ambiguous. Reset markers doesn't do it because if I were to run a design rule check the violation would show up again.I have a design rule set up for clearance, but there is one instance of the violation that I know would not cause any problems and I would like to ignore that violation.

author: free_electron
author_rank: Super Contributor
timestamp: June 01, 2014, 02:57:03 pm
content: Then create a rule specifically attached to that part and make it a higher priority.

author: tree
author_rank: Regular Contributor
timestamp: June 01, 2014, 03:02:22 pm
content: Is there a way to create an exception to the rule?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 01, 2014, 03:13:02 pm
content: NOT InComponent('Refdes')Or even better, you might rather have a rule for that component so it obeys a smaller clearance rather than none, or something like that.Common sense check: are you doing something that you shouldn't be doing? Is there a better way to do it?Example, bridging nets: rather than shorting nets and adding a dubious rule, use a net bridge component (the pads remain in DRC, but any free copper in the footprint is ignored). Example need: using net bridges of specific geometry for trace resistance or inductance (including planar magnetics), or RF transmission line components, or for implementing simulation testing components that disturb the netlist (e.g. 0V voltage sources added to sense current).Tim

author: tree
author_rank: Regular Contributor
timestamp: June 01, 2014, 03:37:34 pm
content: I have a track on the bottom layer with the Keepout parameter so that I can have separate ground planes, BUT I want to be able to run tracks across that keepout track without a rule violation.

author: T3sl4co1l
author_rank: Super Contributor
timestamp: June 01, 2014, 06:34:06 pm
content: Why would you want to run tracks across a split in the first place? That's what the keepout is there for. Aside from your stated need to cross it, I'd say you're doing better than other methods (e.g. drawing two non-overlapping polygons, which won't generate an error on crossing the gap between).If you mean from the same net (to short between in strategic locations), can't you just chop up the k/o trace?Tim

author: tree
author_rank: Regular Contributor
timestamp: June 01, 2014, 07:56:44 pm
content: I use the Keepout parameter (not layer) to split ground plans. I want to route a different signal, so it's not to short the planes.Nonetheless, I've solved it. In the design rules, I added the following to both objects' queries:Any And (Keepout = 'False')