hybridfree/eevblog-posts huggingface dataset:
Looking for OLED 128x64 small panels (not modules) - Page 1
Forum section: electronics / projects

author: rfdes
author_rank: Regular Contributor
timestamp: January 05, 2023, 06:21:18 pm
content: I wish to use some of the small, available everywhere, 0.96" 128x64 OLED displays in a project. The modules available are so cheap they are hard to resist. The issue is that I want to purchase just the raw panel, not the module as I will want to solder these onto a PCB and cannot afford the extra real estate due to the supplied carrier. I guess I could just harvest the panel from the module but if there is an inexpensive source of just the raw panel + controller that would be preferable.ThanksJim

author: kripton2035
author_rank: Super Contributor
timestamp: January 05, 2023, 06:30:23 pm
content: here for example :https://www.aliexpress.com/item/1005003801387081.html

author: Martinn
author_rank: Frequent Contributor
timestamp: January 05, 2023, 06:31:14 pm
content: What volume? Few:https://www.aliexpress.com/item/4000337348313.htmlCommercial product - difficult, you never know how long you get this exact display.- MartinEDIT kripton2035 was faster

author: ataradov
author_rank: Super Contributor
timestamp: January 05, 2023, 06:35:44 pm
content: If you want consistent and reliable supply of a known product with no random substitutions, then usehttps://www.buydisplay.com/Their prices are on par with random AliExpress places, but they are actually a legitimate supplier.

author: rfdes
author_rank: Regular Contributor
timestamp: January 06, 2023, 12:45:37 am
content: I certainly appreciate all the good information. I searched Aliexpress and seemed to only come up with modules.Thanks again.Jim

author: wilhe_jo
author_rank: Regular Contributor
timestamp: January 06, 2023, 07:25:17 am
content: I buy mine at lcsc.Those AliExpress displays are low contrast and low brightness. My guess is, they failed QC as most stuff pushed on AliExpress.....In Europe, TME also has some... During chipmageddon, LCSC was a more reliable source for them, though73

author: voltsandjolts
author_rank: Unknown
timestamp: January 06, 2023, 09:43:20 am
content: Quote from: rfdes on January 06, 2023, 12:45:37 amI searched "0.96 OLED" and in 5 seconds I found:https://www.aliexpress.com/item/1005003746205920.htmlhttps://www.aliexpress.com/item/1005003779447717.htmlhttps://www.aliexpress.com/item/4000218553592.htmlhttps://www.aliexpress.com/item/1005004530537850.htmlhttps://www.aliexpress.com/item/32902819976.htmlhttps://www.aliexpress.com/item/1005003746070975.htmlOr do you mean you are looking for bare glass display without the flex connect?

author: rfdes
author_rank: Regular Contributor
timestamp: January 06, 2023, 03:10:15 pm
content: yes, I see where they seem to show up immediately when searching. I must of used a poor keyword in my search.Thanks for the information.
Source for radial multi-pole magnets? - Page 1
Forum section: electronics / projects

author: Harvs
author_rank: Super Contributor
timestamp: May 01, 2020, 05:54:50 am
content: Anyone come across a source for buying multi-pole radial magnets off the shelf? Even better if it comes with a shaft mount like this:https://www.alibaba.com/product-detail/Stable-Robust-Ring-Diametral-8-Poles_62228800993.htmlAlibaba is about the only place I've been able to locate them, which I find strange. Given they're quite common for hall sensors on PMSM/BLDC motors (which is what I'm planing on using it for). Seems like the sort of thing I should just be able to by from Digikey with everything else?This isn't the first time I've wanted something like this, and Alibaba is just such a pain to buy couple of parts for a few dollars. I haven't even been able to find them on aliexpress.

author: Domagoj T
author_rank: Frequent Contributor
timestamp: May 01, 2020, 08:24:35 am
content: supermagnetman.comA few years ago I was dealing with them. They seemed professional and willing to do custom stuff. Perhaps give them a call?

author: Harvs
author_rank: Super Contributor
timestamp: May 01, 2020, 10:35:16 pm
content: Thanks, I'll give them a call if I have to go the custom route.I was just hoping to avoid getting something custom.

author: thm_w
author_rank: Super Contributor
timestamp: May 01, 2020, 10:49:37 pm
content: There are some on aliexpress, you may have seen those already. I would suspect they are relatively custom, as they tend to be epoxied on to the motor shaft.Most people are not going to be assembling motors from parts off digikey IMO. They'd either buy the motor fully assembled with motion control, or add an encoder to an existing motor (CUI encoderorAMS IC). Both of those options are a magnitude more expensive in volume, however if its a one off, they will be cheaper.If you don't care about absolute positioning, and want low cost, what about sensorless?https://www.digikey.com/en/articles/controlling-sensorless-bldc-motors-via-back-emf

author: Harvs
author_rank: Super Contributor
timestamp: May 02, 2020, 07:32:06 am
content: Quote from: thm_w on May 01, 2020, 10:49:37 pmNo I hadn't been able to find anything. But searching again now I came across one store, which then leads into many more as always on aliexpress.Pretty much found what I am after this time:https://www.aliexpress.com/item/32817651811.htmlIt'll be easy to turn up a mount for it.QuoteAs much as it may seem odd, but repairing and modifying motors is quite common. The motors themselves can be expense, but often there's also quite a lot of work in adapting a new motor to fit the machine it comes off. True probably not digikey, but there's mcmaster carr etc.For the purpose of commutation (FOC control), 3 hall effect sensors and a magnet don't get much simpler which is why it's still almost universal. Often paired with a high-res optical encoder for servo control.Sensorless is great, but much harder if you also need full torque at low rpm. Quite common on fans, centrifugal pumps etc where the starting torque is low.
Source for rubbery (silicone?) backlit monentry button/switch? - Page 1
Forum section: electronics / projects

author: george graves
author_rank: Super Contributor
timestamp: February 26, 2012, 05:19:03 am
content: I'm looking for some buttons for a front panel. I'm trying to find simulacra to the button nice soft buttons on a rigol that light up. Anyone know of a source of an off the shelf (not custom) part? I don't think I want to DIY them either. Thanks!(I've seen the ones spark fun sells, and it's only a rubber cover, you have to make a PCB that will made on the pack of it. That's not what I'm really looking for - I'm looking for something wire or through hole)
Source for small premade 2mm pitch, 4x2 wire board-wire-board connector - Page 1
Forum section: electronics / projects

author: daqq
author_rank: Super Contributor
timestamp: August 18, 2015, 10:57:58 am
content: Hi guys,I'm looking for a cable that is at both ends terminated by these (or similar) connectors:http://sk.farnell.com/molex/51110-0860/housing-2-0mm-8way/dp/1756919connects 1:1 to the other side and is at max 5 cm long? The connectors have a 2mm pitch, 2 rows, 4 signals per row, no high current or any extra requirements. I would need a small-ish quantity, 100pcs max. Alternatively, one end can be directly solderable to a board. Do you know of anyone?Thanks,David
Source for SMT double pin headers? - Page 1
Forum section: electronics / projects

author: miceuz
author_rank: Frequent Contributor
timestamp: June 23, 2015, 11:09:14 am
content: Hi all,I'm looking for cheap supply of these headers. The only I've seen is Samtec one for 1.5€ in hundred quantities at Farnell/Digikey. It's a bit pricy for me, I can't believe there does not exist a cheaper version

author: Psi
author_rank: Super Contributor
timestamp: June 23, 2015, 11:16:44 am
content: $29 for 100x 2x40 strips.Just have to snap them off at lengths of 16Not gold plated though.http://www.aliexpress.com/item/100pcs-lot-2x40-pins-Double-Row-2-54-mm-Pitch-SMT-Needle-Male-Pin-Header/32311841974.html?spm=2114.32010308.4.19.GpeQ1s

author: miceuz
author_rank: Frequent Contributor
timestamp: June 23, 2015, 11:57:35 am
content: doh! I can't believe how I missed thoseThanks!

author: mariush
author_rank: Super Contributor
timestamp: June 23, 2015, 08:53:35 pm
content: TME.eu has them for $0.9 each if you order 500 ... 2x40 pin stripshttp://www.tme.eu/en/details/zl301-2x40p/pin-headers/ninigi/
Source for these beefy pancake coils? - Page 1
Forum section: electronics / projects

author: ledtester
author_rank: Super Contributor
timestamp: July 06, 2020, 06:30:41 am
content: Looking for something along the lines of these:I know you can find similar coils in modern hard drives, but they're not as "beefy".Are they still manufactured? Is there another source for them besides old floppy and hard drives?

author: daqq
author_rank: Super Contributor
timestamp: July 06, 2020, 10:16:21 am
content: They are mostly custom wound coils, to the best of my knowledge they are not standard parts. You can probably source them without gutting old devices, but either it's NOS or you can go custom.See:https://pvelektronic.com/samonosne-a-tvarove-civky/9/2/detail/Also, depending on the application, you could abuse planar charging coils:https://uk.farnell.com/c/passive-components/inductors/charging-coils

author: TimFox
author_rank: Super Contributor
timestamp: July 06, 2020, 02:51:20 pm
content: Interesting problem: clicking on your photo brings up a different image.

author: mikerj
author_rank: Super Contributor
timestamp: July 06, 2020, 03:52:41 pm
content: Quote from: TimFox on July 06, 2020, 02:51:20 pmThe same thing happened on another post I viewed recently.

author: duak
author_rank: Super Contributor
timestamp: July 06, 2020, 05:39:45 pm
content: I've seen coils like this in loudspeaker crossover networks. I Googled "speaker crossover coils inductors" and got a few hits.This one looks interesting:https://www.erseaudio.com/Products/Coils

author: chris_leyson
author_rank: Super Contributor
timestamp: July 06, 2020, 05:44:08 pm
content: There is a Danish company whose name I forget but they make some very nice air cored inductors for speaker crossovers.

author: MarkF
author_rank: Super Contributor
timestamp: July 06, 2020, 07:15:59 pm
content: Quote from: mikerj on July 06, 2020, 03:52:41 pmI'm starting to see this all over the forum.Had several of my own posts where the thumbnail and photo do NOT match.Even some corrupted thumbnails.

author: Gyro
author_rank: Super Contributor
timestamp: July 06, 2020, 07:28:26 pm
content: It's being addressed in the Server Error Reports thread. I think gnif is looking into it.

author: EEVblog
author_rank: Unknown
timestamp: July 06, 2020, 11:50:38 pm
content: Quote from: Gyro on July 06, 2020, 07:28:26 pmYes, gnif is looking into it.
Source for these pre-wired connector assemblies? - Page 1
Forum section: electronics / projects

author: K3mHtH
author_rank: Regular Contributor
timestamp: June 23, 2016, 04:15:49 am
content: Hey Blokes and Sheilas,I'm wondering if anyone knows of a source to find these connector assemblies pre-wired.It is a single in-line polarized connector with a pitch of 2.5mm (not .1"), with a total cable length of 4". The length isn't too important though (that's what she said!).The part shown is no longer in production so I can't find a replacement and I'm trying to roll my own that is compatible. I don't want to cut and crimp all these wires myself, since I plan on making a few of these.Any advice on where I'd look to buy something like this?Also, does anyone know the name of the female end that's show? It's definitely not compatible with the molex style connectors that I'm used to, and that's pretty much all I know.

author: K3mHtH
author_rank: Regular Contributor
timestamp: June 23, 2016, 05:20:32 am
content: Seems like this is aMolex Spox.Has anyone had any luck getting a company from alibaba to custom make these wiring assemblies to specs?
Source for U-shaped rubber grommets? - Page 1
Forum section: electronics / projects

author: Corporate666
author_rank: Unknown
timestamp: September 05, 2017, 11:48:36 am
content: I am having an impossibly hard time finding what I want.As the title says, I am looking for U-shaped rubber grommets that can go into a U-shaped cutout in a panel, producing a flat edge.I can find tons of round grommets, but the only U-shaped ones I find are from suppliers on Alibaba or custom manufacturers showing off their custom jobs. I have searched McMaster, Richco, Heyco and a dozen suppliers I found through Google, but none of them have stocked U-shaped grommets.I only need hundreds of them, so I need something off the shelf. I don't have the space to put any sort of gland fitting either... it's really gotta be a ready made part.Any tips? Ideally a USA supplier that I can order online from.

author: DTJ
author_rank: Super Contributor
timestamp: September 05, 2017, 01:01:32 pm
content: They might be called horseshoe grommets.http://www.allstatesrubber.com/injection-molded-horseshoe-grommet/https://www.google.com/imgres?imgurl=http%3A%2F%2Fimg.directindustry.com%2Fimages_di%2Fphoto-g%2F98409-2992559.jpg&imgrefurl=http%3A%2F%2Fwww.directindustry.com%2Fprod%2Fvogt-gmbh-cokg%2Fproduct-98409-923539.html&docid=HZ9J_RMBPb973M&tbnid=F_A7O0k2A2NnnM%3A&vet=1&w=600&h=600&bih=636&biw=1366&ved=0ahUKEwii3dzJjI7WAhVGOyYKHabKDtIQxiAIGigF&iact=c&ictx=1
Source for very small LED matrix display - Page 1
Forum section: electronics / projects

author: PaulAm
author_rank: Frequent Contributor
timestamp: December 15, 2013, 02:02:32 am
content: Anyone know of a source for a very small led matrix display? I'm looking for something 10mm high or smaller (5 would be perfect) with maybe 32 or so columns.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: December 15, 2013, 09:45:26 am
content: Probably worth looking at OLED for this sort of size

author: Psi
author_rank: Super Contributor
timestamp: December 15, 2013, 10:20:16 am
content: The smallest LED matrix i've seen available at a realistic price are LITE-ON 7x5 modules, but those are 12x17mm.Jamaco have a good price for them though, 89c each in qty 10http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2005497_-1

author: PaulAm
author_rank: Frequent Contributor
timestamp: December 15, 2013, 02:37:49 pm
content: OLEDs might be the way to go. I found this onehttp://www.buydisplay.com/default/0-69-inch-96x16-graphic-oled-display-module.htmlwhich looks interesting.Even better, the LY240-096016 looks perfect for my application 8mm high x 25mm long with a 16x96 matrix and I2C connection. Very cool blue color too.thanks for the suggestion!

author: Mr Smiley
author_rank: Frequent Contributor
timestamp: December 15, 2013, 08:34:07 pm
content: 8x8, 3mm leds, 19mmx19mmx13mm deephttp://www.ebay.co.uk/itm/P4PM-10PCS-LED-Dot-Matrix-Display-Module-Red-16Pin-8x8-Common-Anode-/301018400092?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item461618455c

author: kripton2035
author_rank: Super Contributor
timestamp: December 15, 2013, 08:45:55 pm
content: you can also try hcms29xx modulesthese are not real matrix display as you may think of, it's not driving the same waybut it's still 5*7 matrix displays that are very small (and quite expensive too...)
Source of keyed IDC housings and crimp terminals? - Page 1
Forum section: electronics / projects

author: smiler
author_rank: Newbie
timestamp: December 05, 2020, 11:24:36 am
content: I'm looking for the housing and crimp terminals that are used in the cables in the image below. They fit in standard 2.54mm pitch male IDC box headers. My search-fu is failing me in this(https://modularaddict.com/parts/cables/premium-eurorack-power-cables)

author: artag
author_rank: Super Contributor
timestamp: December 05, 2020, 11:30:41 am
content: Samtec ? TE Connectivity ?

author: smiler
author_rank: Newbie
timestamp: December 05, 2020, 12:00:33 pm
content: Quote from: artag on December 05, 2020, 11:30:41 amI'm having trouble finding one have the correct polarizing key. Only the normal unpolarzied dupont-style ones.

author: Miti
author_rank: Super Contributor
timestamp: December 05, 2020, 03:34:53 pm
content: I was about to ask the same question. I can only find this:Dupont.pngwhen I actually need this:IMG_5672 (1).JPGSo I was thinking to buy the cable from Ali and move the crimps in this housing, if they fit:https://www.digikey.ca/en/products/detail/amphenol-icc-fci/78211-005LF/1002712

author: langwadt
author_rank: Super Contributor
timestamp: December 05, 2020, 11:53:18 pm
content: looks like Molex CGrid III

author: daveismissing
author_rank: Contributor
timestamp: December 06, 2020, 01:08:08 am
content: Looks like an AMP /TE connector . The outside edges of the C Grid do not have that little scallop
Source of PCB Mount RCA Sockets - Page 1
Forum section: electronics / projects

author: Mike Warren
author_rank: Unknown
timestamp: August 09, 2016, 10:28:22 pm
content: For a product I make I use this part, sourced from Altronics:http://www.altronics.com.au/p/p0213-2-way-horizontal-pcb-mount-gold-rca-socket/Altronics have just discontinued the part and I need to find another supplier of a physically compatible part.I only use them is small quantities.Does anyone know where I can get them?

author: Mike Warren
author_rank: Unknown
timestamp: August 09, 2016, 10:48:45 pm
content: This looks compatible:http://au.mouser.com/ProductDetail/CUI/RCJ-2123/?qs=sGAEpiMZZMv0W4pxf2HiV2C89K%252bWnR8%2fIrjaUt2q2bQI3JoN77YB4g%3d%3dQuite a bit more expensive that Altronics Wholesale pricing. Even if I buy 10000 of them they are still more than 3 times the single buy price from Altronics.But I only want 100 at a time. If I can't find anything cheaper that will have to do.
Source of SMD R sample book complete E96 stepping - Page 1
Forum section: electronics / projects

author: Wilson__
author_rank: Frequent Contributor
timestamp: November 01, 2024, 02:23:44 pm
content: Any cheap source for "as complete as possible" for E96, 1%, value-step from 10 ohm to 976 kohms? 96 values per decade.For imperial 0603 and imperial 0402?So far haave seen, seems Aliexpress has best 400 value-steps covering the range, meaning it is sometime on E24, sometime E48 and sometime E96 value-stepping.Ideally, it will be1. Each E24/48/96 value from 1-9.76 ohm2. Each E96 value from 10-97.6 ohm3. Each E96 value from 100-976 ohm4. Each E96 value from 1K-9.76Kohm5. Each E96 value from 10K-97.6Kohm6. Each E96 value from 100K-976Kohm7. Each E24/48/96 value from 1M-9.76MohmMouser has someting that is near compelte buy very high price.https://www.mouser.hk/datasheet/2/385/SEI_Engineering_Kits-3077813.pdfMany thanks

author: Haenk
author_rank: Super Contributor
timestamp: November 01, 2024, 03:28:37 pm
content: I can only advise to purchase one of those Aliexpress "full" kits. If you need other values, buy them (rarely necessary), but you will find out you need to refill some common values often.

author: wraper
author_rank: Unknown
timestamp: November 01, 2024, 03:40:02 pm
content: Buy thesehttps://aliexpress.com/item/1005005047731777.htmland order resistors separately at place that offers good price for low quantities, for example at LCSC.

author: ebastler
author_rank: Super Contributor
timestamp: November 01, 2024, 04:15:58 pm
content: Quote from: wraper on November 01, 2024, 03:40:02 pmPre-populated books with various SMD package sizes and ranges, empty binders and extra pages are all available very cheaply from AliExpress.The thing I dislike with this binder style is that the pages don't have separate pockets for labels. The complete kits I got had printed labels glued to the pages -- some have started to come off, but there is not really a better way to attach them beyond trying different glue.

author: temperance
author_rank: Super Contributor
timestamp: November 01, 2024, 06:18:37 pm
content: Farnell: 5412067They have separate pockets for labels.
Source rgulada 50V 10A - Page 1
Forum section: electronics / projects

author: Daniel
author_rank: Newbie
timestamp: January 17, 2013, 02:59:21 pm
content: Hello forumers of EEVOLOG ELECTRONICthis is the original the original link:http://www.sentex.ca/~mec1995/circ/ps4002/ps4002.htmlThis is the change to 50 V 10AMy concern is:1. - The transformer T1, T2 that voltage should be.2.-red lines is the modification, I added a filter to the input of T1, resistors R10, R11 to protect the miter4. - Regarding the configuration of the transistors is not well configuration.6. - As the polarity of the meter, is correct.Best regards Daniel
Source ~1.5" touchscreen. - Page 1
Forum section: electronics / projects

author: Aodhan145
author_rank: Frequent Contributor
timestamp: June 02, 2016, 08:35:32 pm
content: Ive been working on a project where I was going to make a smart watch that connects to my phone. I have already sourced a 1.5" oled display that I know I can use. Does anybody know where I can source a ~1.5" touch screen. I could pass on the touch screen and just have buttons but I would prefer the touchscreen. I can't find one anywhere I have check places like aliexpress. Does anybody even have suggestions for alernatives if I can not find one.

author: RogerRowland
author_rank: Regular Contributor
timestamp: June 03, 2016, 04:46:07 am
content: Something like this?http://www.alibaba.com/product-detail/1-54-inch-capacitive-touch-I2C_1996800453.html?spm=a2700.7724838.0.0.NLrlvfOr, if you don't mind a bit larger (1.63"), you can get an OLED with touch built in:http://www.texim-europe.com/product/PA320320-CTP-PTK

author: Aodhan145
author_rank: Frequent Contributor
timestamp: June 03, 2016, 12:16:11 pm
content: Quote from: RogerRowland on June 03, 2016, 04:46:07 amHow did you find this? Thank you so much its exactly what im looking for. Im intrested in the alibaba one but I have never really used alibaba before. Can I just order 1? And, Do I have to ask for a datasheet?

author: RogerRowland
author_rank: Regular Contributor
timestamp: June 03, 2016, 12:19:46 pm
content: Quote from: Aodhan145 on June 03, 2016, 12:16:11 pmGoogle fuI don't use Alibaba, but at least it shows that these things exist. Once I'd seen the 1.54 inch dimension, googling became easier.

author: Aodhan145
author_rank: Frequent Contributor
timestamp: June 03, 2016, 12:28:17 pm
content: Quote from: RogerRowland on June 03, 2016, 12:19:46 pmGoogling these things never work for me. I do try hundreds of sites. Yeah 1.54" seems alot more common. Hopefully someone else here has used alibaba.

author: Wilksey
author_rank: Super Contributor
timestamp: June 03, 2016, 01:12:46 pm
content: It says MOQ of 1 piece, so you have to contact the seller and ask for a quote for 1 piece, you might need to look at the sample option for a low MOQ.
sources/alternatives to medium resolution monochrome GLCDs/OLED (320x240 and up) - Page 1
Forum section: electronics / projects

author: JPortici
author_rank: Super Contributor
timestamp: February 20, 2018, 05:28:10 pm
content: I have a hobby project in mind that will have a screen.Iwantit to be white on black.A oled would be perfect, but unfortunately the cheap-ass graphical ones are too small and limited in resolution, i'd like it to be at least 320x240 and about 3-4" diagonal.OLEDs bigger than 1.3" that i could find (buydisplay/newhaven/aliexpress/ebay) were either character based or short and large (like 240x64) and GLCDs cost more than 20€ eachI'd like to avoid using a TFT screen as i don't care for colours, unless i can put them in a "monochrome" mode where i can communicate with them as if they were monochrome, 1bpp. Also Less ram needed for framebuffer.i like the GOLF VI dashboard display... clear and very bright.But i can't find a source for something simillar to it.

author: Buriedcode
author_rank: Super Contributor
timestamp: February 20, 2018, 07:34:53 pm
content: Most of the cheap tft "modules" going around these days have built-in controllers and VRAM, so unless you're displaying bitmaps, you don't need much memory, just enough to store a few fonts, I've found even the 32kB of an Atmega328p to be plenty.You don't have to use colours, you can just display everything in the same colour - bit its nice that you have the option of changing colours of the foreground, background or anything.The only downside is that you will probably need to send at least two bytes per pixel via SPI, which with standard libraries (like the Adafruit GFX one) can take a lot time to fill teh screen as they aren't optimised - use an MCU with DMA as this will greatly speed things up.Don't worry about it being 'too much' you can just use the TFT with one colour, and they generally have great contrast and brightness - but they are unlikely to be sunlight readable. Make sure you avoid the ones with a touchscreen, as its resistive and can ruin the contrast and add glare. I'm hesitant to recommend a display for something that is critical, but perhaps transflective displays would be better?

author: daveshah
author_rank: Unknown
timestamp: February 20, 2018, 08:29:54 pm
content: If you use a parallel TFT you could make it "monochrome" by tying all the RGB pins together.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 20, 2018, 09:03:28 pm
content: QuoteThis will work but will be pretty inefficient, as you lose 50% of the light in the polarisers, then about two thirds through the RGB filters.There are some IPS 320x240 LCDs that give better contrast & viewing angleI'm fairly sure the automotive displays are monochrome TFTs, based on the contrast and appearance. Might be worth looking at repurposing one of those.

author: JPortici
author_rank: Super Contributor
timestamp: February 28, 2018, 04:36:15 pm
content: Quote from: mikeselectricstuff on February 20, 2018, 09:03:28 pmI think so, but i don't know many manufacturers in case i need more than a couple if them..
Sourching a GoPro connector - Page 1
Forum section: electronics / projects

author: SirJMD
author_rank: Contributor
timestamp: March 13, 2016, 07:24:33 pm
content: I've been trying to find the bare GoPro bus connector for a project I'm working on, however it's proving a bit difficult.The connector in question:http://www.getfpv.com/accessories-78/a-v-cables/gopro-live-video-out-charge-right-angle-connector.htmlAnyone know the name of the connector, or even better, where I can buy it?

author: ElektronikLabor
author_rank: Regular Contributor
timestamp: March 13, 2016, 07:47:00 pm
content: Like this?http://www.chargeconverter.com/store/index.php?route=product/product&keyword=gopro&category_id=0&product_id=84http://www.chargeconverter.com/store/index.php?route=product/product&keyword=gopro&category_id=0&product_id=163

author: Kilrah
author_rank: Unknown
timestamp: March 13, 2016, 07:49:09 pm
content: http://eu.mouser.com/ProductDetail/JAE-Electronics/DD1B030HA1R500/?qs=%2fha2pyFaduiR2ztdy3l4X7RXYK8H%252bFkAi%252buX75dXifdZYiQDBsHVTA%3d%3dand its variations.

author: SirJMD
author_rank: Contributor
timestamp: March 14, 2016, 11:00:26 am
content: Quote from: medvedev on March 13, 2016, 07:47:00 pmThe first one could look like a good fit. Like the one in my first post, I need it to be mounted 90º in relation to the PCB. Definitely gonna give it a try - 19 USD in total for three connectors shipped.Quote from: Kilrah on March 13, 2016, 07:49:09 pmAny indication whether the quality is superior to the ones medvedev linked? There's quite a big difference in price.
Sourcing 11x11 PGA socket - Page 1
Forum section: electronics / projects

author: devinatkin
author_rank: Contributor
timestamp: March 27, 2020, 06:02:58 pm
content: There's gotta be somewhere cheaper to source these things... Digikey is out of them, and has been for quite some time (I didn't think I'd have to order them when I first saw). I had some old ones in the University lab but I no longer have access to that due to Covid-19. Trying to order a couple on the cheap so I can do testing from home when my new chip arrives in a few weeks.Does anyone have a good source for these things? It doesn't even have to be a good one, no gold plating or anything. A 11x11 pga socket, with the outer 2 rows populated along with an inner 3 on each side.Thank you for any suggested sources.
Sourcing .25mm pitch connector - Page 1
Forum section: electronics / projects

author: Deepak
author_rank: Regular Contributor
timestamp: February 27, 2012, 05:53:04 pm
content: I was hoping that someone would be able to help me track down a source for .25mm connectors for an LCD repair. My understanding is that I'd need to use an anisotropic film or paste to make the connection, so a source for that would help too.I've spent hours on Digikey and Mouser this weekend without any luck, and an aftermarket replacement board would be a decent chunk of change for less functionality

author: Psi
author_rank: Super Contributor
timestamp: February 27, 2012, 11:40:47 pm
content: I'm not too sure what you need.Is it a board mount 0.25mm pitch connector for flex cable?http://search.digikey.com/nz/en/products/XF3C-174541A/OR1019CT-ND/2330586

author: Deepak
author_rank: Regular Contributor
timestamp: February 28, 2012, 03:53:08 am
content: I'd guess it's a flexible printed cable, but don't take my word for it.This picture might clear things up:http://img19.imageshack.us/img19/4783/20120227224230.jpg

author: Psi
author_rank: Super Contributor
timestamp: February 28, 2012, 04:30:52 am
content: Does the flex cable from the LCD panel solder directly to the pcb? (hate those)

author: Deepak
author_rank: Regular Contributor
timestamp: February 28, 2012, 07:18:42 am
content: I wish it did - it looks like it's held down with an adhesive, with the exception of the bottom right part, and wraps around to an LCD on the opposite side. I tried hot air without luck, and I think if my soldering iron looked at it sideways it would obliterate the entire cable.

author: Rerouter
author_rank: Super Contributor
timestamp: February 28, 2012, 07:48:53 am
content: that is soldered on, just was done by pre-heating the board and a quick hand, also hate them so very much, best case, it may be adhered on both edges for cost cutting, but really the only way to fix them would be, if your good with blade to scrape back some of the existing ribbon, and use some conductive adhesive to glue pin to trace, 1 at a time, iron is basically just not a good thing to try,comes down to how badly you want to repair it, if it really was worth hundreds to you, you could probably find the part number on the lcd and finding a replacement,is the ribbon secured on the lcd side, e.g. looks built in?,

author: Psi
author_rank: Super Contributor
timestamp: February 28, 2012, 08:30:07 am
content: I used the iron (on low temp) to unsolder and resolder an LCD flex cable in my Harmony remote control.Seemed to work fine and didn't melt the flex cable.However the pitch was much bigger than your cable. I think it was around 2mm.
Sourcing 7Segment Snap on Filters & LCD Bezel - Page 1
Forum section: electronics / projects

author: Docara
author_rank: Regular Contributor
timestamp: July 09, 2018, 03:46:06 pm
content: Hi,Do you remember those rectangular filter you used to get which the 7segment displays fitted into - some of them had clips which held the display in. Does anyone know if they are still produced and if so where to get them (I'm UK based).Also, as an alternative, I'm looking for a LCD bezel for a 16 or 20x2 display which is IP rated - waterproof between the outer bezel plastic and inner clear 'glass' after its been stuck to a panel obviouslyThanks

author: RomDump
author_rank: Regular Contributor
timestamp: July 09, 2018, 03:59:56 pm
content: Quote from: Docara on July 09, 2018, 03:46:06 pmI did a simple search onwww.digikey.co.ukfor "LCD bezel" and I got a list. PRD180R-ND is the red lens. You can figure out the rest as you have many options.

author: Docara
author_rank: Regular Contributor
timestamp: July 09, 2018, 04:14:30 pm
content: HiI've looked at the ones on digikey. They do not state they are waterproof.Looking on the manufacturers web site it looks like they use a drop in windows into their bezels.

author: RomDump
author_rank: Regular Contributor
timestamp: July 09, 2018, 04:31:46 pm
content: Quote from: Docara on July 09, 2018, 04:14:30 pmI would contact the manufacture to get clarification, (PRD Plastics). You may have to do a custom bezel if the generic don't suite your needs but they should be able to advise you.
sourcing Dsub 37 adapter housing - Page 1
Forum section: electronics / projects

author: qwaarjet
author_rank: Regular Contributor
timestamp: July 19, 2016, 04:32:54 pm
content: I'm trying to find a housing that supports 2 dsub 37 connectors. In the style like the one shown in the picture, I've been able to find up to 25 pin but not 37.Anyone seen something like that around?prefer US supplierquantity ~100
Sourcing GC10 Solder Paste - Page 1
Forum section: electronics / projects

author: rts808
author_rank: Newbie
timestamp: March 08, 2024, 03:06:30 am
content: Does anyone have a good place to source Multicore GC10 solder paste (formerly Loctite GC10)? I've found some type 3 but I'm also interested in the type 4 and 5. I'm soldering some smd chips that have VQFN .25mm pads. I'd like to not have to buy multiple $100+ containers of GC10.

author: rts808
author_rank: Newbie
timestamp: July 15, 2024, 12:01:12 am
content: To provide a bit of closure for those who find themselves in a similar situation, ChipQuik makes GC10 under their own name. It is their “thermally stable solder paste NC (no-clean) Sn96.5/Ag3.0/Cu0.5 T4” stuff that is GC10 but under a different name. This is my first venture into solder paste so I don’t have anything to compare it to. However, it certainly seems to work just like how others have described GC10.
Sourcing KTM50X0 firmware for DisplayPort MST hub (if even needed?) - Page 1
Forum section: electronics / projects

author: i509VCB
author_rank: Contributor
timestamp: December 19, 2023, 03:32:45 am
content: Howdy, I am working on a hobby project designing a Jetson Orin Nano carrier board. I need two display outputs, the Orin only has one DisplayPort/HDMI output but supports MST, so two display outputs would work.I found the KTM50X0 which seems to be a pretty reasonable (and I can actually get these on digikey/mouser). However this leaves a glaring question. Quoting the datasheet:QuoteThis seems to imply a firmware blob is needed for the SPI flash, which is probably going to be impossible to source. Given that I sent Kinet a message via their request page about a different IC's datasheet a few days ago and got no response, is this IC a lost cause?Although if someone who has used one of these can confirm no firmware is actually needed (I don't care about the ARM on there) for the MST hub then I would be fine.

author: aileenbryan
author_rank: Newbie
timestamp: December 19, 2023, 09:09:47 am
content: Quote from: i509VCB on December 19, 2023, 03:32:45 amIf you’re primarily interested in the MST functionality and not the ARM processor on the KTM5000, you could experiment. Connect the KTM5000 to your Jetson Orin Nano carrier board and see if it functions as expected without any custom firmware.
sourcing light guide - Page 1
Forum section: electronics / projects

author: Guillaume
author_rank: Contributor
timestamp: February 15, 2023, 07:34:36 pm
content: Hi,I'm looking for light guide for CMS with 180° light destination. I want a PCB without any component in one face so a hole to transmit light of a led in other face.See example attached.I make some research but didn't find this kind of guideThank you for your help

author: Conrad Hoffman
author_rank: Super Contributor
timestamp: February 15, 2023, 10:29:45 pm
content: Do a search for "u-shaped light pipe"You may not find what you need but there are some guides. You may be able to heat and bend a piece of plastic to get the job done. You can't do it with machining. If the constraints are too tight, you might have to resort to mirrors.

author: Phoenix
author_rank: Frequent Contributor
timestamp: February 15, 2023, 10:40:16 pm
content: How about a downward firing LED? Basically, they are an upside down LED and shine back through the PCB.https://www.digikey.com.au/en/products/detail/sunled/XZMDK45WT-9/6615712https://www.digikey.com.au/en/products/detail/liteon/LTST-C230KRKT/386857

author: timeandfrequency
author_rank: Frequent Contributor
timestamp: February 20, 2023, 08:59:30 pm
content: Hi Guillaume,Maybe that designing and printing your own lightpipe could be an acceptable solution ?https://www.fictiv.com/articles/how-to-3d-print-light-pipeshttps://www.edn.com/time-for-a-second-3d-printer-in-the-lab/
Sourcing planar magnetic ferrites - Page 1
Forum section: electronics / projects

author: Harvs
author_rank: Super Contributor
timestamp: August 14, 2013, 09:58:40 am
content: I'm working on a prototype SMPS at the moment that needs to be as slimline as possible (above board height), so I'm thinking it's a good time to have a go at designing planar magnetics (I've designed plenty of traditional SMPS transformers and inductors before.)What seems weird though is element14 and mouser stock a reasonable range of planar core sets, but it seems halves are not available off the shelf with gaped center legs. Then when you look at the ferroxcube or fair-rite websites they list that the parts can be supplied with a specific air-gap or to an Al value. This doesn't seem right that you'd effectively need a custom order just to get what I would consider a pretty standard thing? For a prototype I can always gap it in the workshop without an issue, but what about for low volume production? (<500 units)Or is there something peculiar about planar power inductors that I've completely missed?

author: Bored@Work
author_rank: Super Contributor
timestamp: August 14, 2013, 04:24:40 pm
content: Gapped center legs in planar transformers are typically considered as being more of a problem than helpful, because they are increasing winding losses. No, I never checked if this is really the case, and how bad it is. It is just what magnetic aficionados tell you.Because of that people go for special asymmetric air gaps, which promise less losses. That is, if they go for an air gap at all, i.e. if they have a flyback architecture.

author: Marco
author_rank: Super Contributor
timestamp: August 14, 2013, 06:28:08 pm
content: Why aren't there powdered (iron or ferrite composite) planar cores? They wouldn't suffer from the fringing. Is it because flyback is simply deemed irrelevant for most applications?

author: Harvs
author_rank: Super Contributor
timestamp: August 14, 2013, 10:51:55 pm
content: Interesting.I'm actually looking at it for a PFC stage, boost topology. Obviously that's not an irrelevant requirement.But I imagine it would be very difficult to build a typical flyback with a planar design due to the usual input to output double isolation barrier requirements for off-line converters.

author: nctnico
author_rank: Super Contributor
timestamp: August 15, 2013, 10:37:46 am
content: Quote from: Harvs on August 14, 2013, 09:58:40 amYou can also create a gap by putting a thin layer of something (plastic, kapton) between the cores.
Sourcing PTC thermistors for Sencore PA81 - Page 1
Forum section: electronics / projects

author: markf31
author_rank: Newbie
timestamp: May 25, 2025, 12:20:16 am
content: I've entertained the crazy idea of building a clone of the Encore PA81 using information available in schematics, block diagrams, and parts lists as found in the service manual for the PA81. Surprisingly 99% of the parts including most of the ICs are still available in current production but the unit uses 6 thermistors that I cannot find.I have started to draft the schematic in KiCad, using the drafting process to identify part subsitutions if needed and as a cross check on the parts list and schematic provided in the service manual.The PA81 uses 3 different pairs of thermistors, called out in the schematic and parts lists as RT1 thru RT6. I have included a link to the service manual for reference.https://drive.google.com/file/d/1F8woHtNn_DvsFmN9vO2rmt1m4IBAGltG/view?usp=drivesdkI'm having an incredibly difficult time trying to locate current production thermistors that match the specs provided in the parts list. Even Ebay for used or sketchy chinese seller options are simply not to be found.The parts list in the service manual specify the thermistors as:Therm, PTC, 5k, 500vTherm, PTC, 4.6 Ohm, 60vTherm, PTC, 860 Ohms, 60mA, 150vTwo pairs are used at the external input jacks where the DUT is plugged in, and one pair is used at the external scope jacks.Anyone have a source beyond the usual suppliers of Mouser, Digikey, Newark, etc where I could source PTC thermistorsto these specs? Am I SOL? Do I have other options for circuit protection at these locations?A lot to unwind, I know.

author: Poroit
author_rank: Frequent Contributor
timestamp: May 26, 2025, 06:15:39 am
content: G'day markf31,I suggest you check some of the manufacturers to pin down part numbers you can relate to suppliers who may be able to order.https://www.vishay.com/en/thermistors/https://www.murata.com/en-global/products/thermistor/ptc
Sourcing Realtek RTL8305NB-CG ethernet controller. - Page 1
Forum section: electronics / projects

author: SgtSiff
author_rank: Contributor
timestamp: August 20, 2019, 04:08:57 pm
content: How do you get your hands on Realtek components? Do they only sell to OEMs in quantities of 1000s? The only place that I can find them is eBay of all places which is not really goodI want to desgin an ethernet controller into my design and I was origionally going to use the Microchip KSZ8895 however it's quite large especially when a lot of the features won't be used in it's unmanaged configuration.I was planning to connect the RTL8305NB-CG to a LAN9514 to give me four ethernet and four usb off of a single USB (I realise the bottleneck of the USB but I am only handling small amounts of SNMP traffic, and the USBs from the LAN9514 will be used to connect to serial ports).As an alternative can anyone suggest a good, cheap 10/100 unmanaged ethernet switch IC with 5 x MAC & PHY like the RTL8305NB-CG?Ta
Sourcing replacement parts for old film processors - Page 1
Forum section: electronics / projects

author: amaschas
author_rank: Regular Contributor
timestamp: April 19, 2025, 04:04:44 am
content: [ Specified attachment is not available ]Hey all, I do a fair bit of repairing of old film processors, and most of the processors that come across my desk are the Jobo CPA/CPP models that use a rotating tube to develop film and paper. These processors tend to fail in two specific ways that affect the rotation motor: either the potentiometer that controls the speed (and switches the motor power) breaks, or circuit that controls the alternating direction of the motor fails, either because of the big TIP 140 transistor or the relay that it drives dies. The TIP 140 is the easiest of these to replace, since I can just swap in a TIP 142. The relay is a bit harder, since it has a footprint that modern relays don't seem to support, with a 12.3mm spacing between the front and back pins rather than the more common 5.08mm. You can still get originals but they tend to be expensive, and I'd honestly rather find something more modern, so I end up just extending the legs with bits of wire to fit the old footprint. The potentiometer appears to be total unobtanium, the closest I can find is the Alpha RV16DPF series, but the specific model I want, 10k with the F-type shaft, is nowhere to be found.The relay I'm trying to match is this one (HB2-DC24V):https://datasheet.octopart.com/HB2E-DC24V-Panasonic-datasheet-13076827.pdfHere it is in situ:And the potentiometer appears to be a model from the (Czech?) company Preh. This is my collection of broken potentiometers. They're all 10k pots with a rotary switch.If anyone has any suggestions for sourcing either of these parts, you'll be helping keep these old machines running for a few more years.
Sourcing right angle contact connectors - Page 1
Forum section: electronics / projects

author: TheCamel
author_rank: Newbie
timestamp: January 08, 2015, 06:53:04 pm
content: Hi,For my application I need right angle contact connectors similar to this one:http://www.omegashielding.com/category/right-angle-sub/part/099-745-NTThe problem is that this manufacturer only ships to the US and I live in Europe. Do you know where else I could find this type of connector? My application requires quite small connectors (ideally a little bit smaller that the one I linked) so I would prefer a supplier with quite a broad range of sizes.Thank you in advance,B. Vernier
Sourcing small 4 digit 7 segment display - Page 1
Forum section: electronics / projects

author: ulix
author_rank: Regular Contributor
timestamp: February 07, 2016, 11:16:50 pm
content: Hello,I'm looking for an alternative to the HP QDSP-6064 display. Does anyone know any alternative, which is sized the same? Everything I can find is much longer. For Example the Knigbright(KCSA02) SMD 7 Segment 1 Digit Display is 6.9mm long, which will be 4 side by side = 27.6mm, the QDSP-6064 is only 15.6mm.Thank you

author: dwpatter53
author_rank: Contributor
timestamp: March 02, 2016, 12:37:15 am
content: These guys have some very small 7 seg LEDs; 7S-3 and 7S-4;http://www.allspectrum.com/store/ledsdisplays-c-23.html?osCsid=f9994dfa9dd12fd7e603b09fecb71f90

author: elecman14
author_rank: Unknown
timestamp: March 02, 2016, 01:24:07 am
content: Here is the smallest 4 digit display I could find (sadly it is not 7 segment):HCMS-2905 -> 4 character alpha numeric IC (17.78mm x 10.16mm x 5.08mm)You also could look into other bubble type displays like:DL340MDL1414

author: 0xFE
author_rank: Newbie
timestamp: August 01, 2018, 08:12:18 pm
content: Hi, HP5082-7404 and 7414 are pin-to-pin compatible with QDSP-6064.Datasheethttp://members.ziggo.nl/kees.van.der.sanden/downloads/HP50827400.pdfYou may also consider 2x HP5082-7433 as a 6 digit alternative or 7415 with 5 digits per cluster.
Sourcing stranded cable - Page 1
Forum section: electronics / projects

author: Rachie5272
author_rank: Regular Contributor
timestamp: January 17, 2016, 05:33:20 pm
content: This is a very basic question, but it's been causing me trouble for years. Where is a good place to buy quality multi-conductor stranded cable? Most of what I've seen either has a low number of strands, making it stiff, or is far too expensive.I see single conductor silicone coated wet noodle wire on ebay all the time, but never in bundles. Am I missing something?

author: RobertBG
author_rank: Regular Contributor
timestamp: January 19, 2016, 03:53:49 pm
content: What gauge and how many conductors are you looking for?

author: Rachie5272
author_rank: Regular Contributor
timestamp: January 19, 2016, 07:08:30 pm
content: It varies depending on the task, but typically 22 gauge, 4-8 conductors. I often resort to CAT5 cable, but the flexibility is lacking, and I've never seen lower than 24 AWG.

author: station240
author_rank: Unknown
timestamp: January 19, 2016, 08:01:40 pm
content: Only thoughts I have is to look at cable for industrial control use.This for example is available in 12 to 22 AWGhttp://tewire.com/copper-instrumentation-cable-300v/pvc-copper-instrumentation-cable-6-10/Perhaps the mining industry and others have some of this sort of thing surplus.

author: dr.diesel
author_rank: Super Contributor
timestamp: January 19, 2016, 08:05:48 pm
content: These guys make some really nice stuff:http://microflexwire.com/flexible-multi-conductor-cable/