hybridfree/eevblog-posts huggingface dataset:
Making USB C camera interchangeable sensor and C Mount lens with Lattice FPGA - Page 1
Forum section: electronics / general

author: RoadRunner
author_rank: Frequent Contributor
timestamp: November 27, 2022, 02:34:47 pm
content: I have been working on opensource USB 3.0 camera project since quite some time. Here is one project with USB C and interchangeable camera sensor with Lattice Crosslink NX FPGA and Cypress CYUSB FX3 USB 3.0 Controller. Source of project is available on GitHub. While Full project description is available on my blog.https://www.circuitvalley.com/2022/06/pensource-usb-c-industrial-camera-c-mount-fpga-imx-mipi-usb-3-crosslinknx.htmlhttps://github.com/circuitvalley/USB_C_Industrial_Camera_FPGA_USB3

author: Zipdox
author_rank: Regular Contributor
timestamp: December 02, 2022, 05:33:13 pm
content: Now this is some really exciting stuff. How much does it cost to manufacture?

author: RoadRunner
author_rank: Frequent Contributor
timestamp: December 03, 2022, 08:44:54 am
content: Till now i have only made few prototype for Lattice and Infineon them self, There has been no production run. It should cost around 100$ to mass produce in just parts.

author: marks2c
author_rank: Contributor
timestamp: December 18, 2022, 05:33:39 pm
content: Mint RoadRunner. Looks ideal. You can count me in for two if and when you are ready (IMX477).

author: RoadRunner
author_rank: Frequent Contributor
timestamp: January 30, 2023, 06:30:03 pm
content: I have already made boards sensor with IMX477

author: ArsenioDev
author_rank: Frequent Contributor
timestamp: April 07, 2023, 07:10:58 pm
content: I'd prob go for one or two with IMX462 or IMX678, 462 preferable due to better qE in range of what I'm looking for.

author: 2vlado
author_rank: Newbie
timestamp: March 06, 2024, 09:16:07 pm
content: Great project. Any chance to add a DisplayPort output? Then this camera would be great to use as a microscope.

author: uer166
author_rank: Super Contributor
timestamp: March 15, 2024, 05:34:48 am
content: I wonder if there's enough memory to do some CNN/classification tasks on the FPGA.

author: dobsonr741
author_rank: Frequent Contributor
timestamp: March 15, 2024, 01:50:26 pm
content: Pure awesomeness. What equipment did you use to solder the BGAs?
Coral SOM host mode - Page 1
Forum section: electronics / general

author: maxpayne
author_rank: Regular Contributor
timestamp: February 11, 2024, 03:34:27 am
content: I am designing a hardware based on the Coral SOM and the dev board schematic. Here is the datasheet of the SOM -https://raw.githubusercontent.com/SeeedDocument/Bazaar_Document/master/Coral-SoM-datasheet.pdfOn page 20, there is the USB pin-outs. I don't need the OTG function and want to run both the USB ports as host. There is no documentation in this respect in the datasheet.1. For host mode, how should I configure the 4 pins, USB1_VBUS, USB2_VBUS, USB1_ID and USB2_ID ?2. Should I connect the ID pins to GND ?3. Whats the function of VBUS detect pins ? Does this pin state matters in the host mode ?

author: maxpayne
author_rank: Regular Contributor
timestamp: February 12, 2024, 10:40:10 am
content: Whats the harm in asking here ? please explain ...

author: maxpayne
author_rank: Regular Contributor
timestamp: February 12, 2024, 11:30:25 pm
content: Google is very slow in support. For Coral, they actually redirects any queries to Asus China, probably OEM for the Coral SOM. Which takes a significant time and hard to understand their reply with their Chinese English.
Open sourcing STM32 firmware - Page 1
Forum section: electronics / general

author: alan.bain
author_rank: Regular Contributor
timestamp: November 22, 2023, 10:59:26 am
content: Does anyone have any advice on how to open source firware source code for an STM32 project? The hardware design is open too, but that's easy as it is just KiCad files/Gerbers. The issue is the tangled way in which the STM32CubeIDE mixes in bits of STM code, other projects like LWIP and RTOS buf often in bespoke ST modified forms.I can obviously put an appropriate public domain (or similar if something else is deemed preferable) license header in the files which I wrote, but given that to build it into a working image the rest of the files need to be there and the right versions - and making the mix work is often the hardest part of doing a build. I'm wondering what other people do?I'd like to be able to dump it on a suitable public access SVN repository like sourceforge.

author: robca
author_rank: Frequent Contributor
timestamp: November 22, 2023, 06:19:03 pm
content: Does this help?https://github.com/STMicroelectronics/STM32Cube_MCU_Overall_OfferEach of the linked projects contains a licensing file likehttps://github.com/STMicroelectronics/STM32CubeF1/blob/master/License.mdWorst case, you can simply provide your code and a list of dependencies to the STM Github repositories

author: dobsonr741
author_rank: Frequent Contributor
timestamp: November 22, 2023, 09:02:40 pm
content: QuoteGitHub please. SVN is the past, retired, forgotten

author: orzel
author_rank: Regular Contributor
timestamp: January 09, 2024, 08:23:58 pm
content: Quote from: dobsonr741 on November 22, 2023, 09:02:40 pmmercurial please ! (https://www.mercurial-scm.org/) Git is the past ! And use gitlab instead of github. There's even a gitlab fork for mercurial,https://heptapod.net/.

author: zapta
author_rank: Super Contributor
timestamp: February 01, 2024, 07:34:04 pm
content: I use platformio. The libraries are separated from your app and you just need to publish your files and platformio fetches the dependencies automatically.MxCube IDE's approach of adding user snippet code in auto generated files is very bad IMO and makes the app code less manageable and readable.

author: robca
author_rank: Frequent Contributor
timestamp: February 01, 2024, 09:47:29 pm
content: Quote from: zapta on February 01, 2024, 07:34:04 pmAre you using Platformio with the Arduino framework? If so, you are dealing with a huge amount of horrible HAL code, one of the most wasteful and pointless abstraction layers ever developed. Convenient and fast but very limiting. For example, if you use the ADC read function, it fully re-initializes the ADC for each single read, making an ADC loop orders of magnitude slower than a properly written one using LL libraries and DMA.If you are programming the STM32 using low-level libraries (LL_*), you need STM32CubeMX to help generate the project skeleton. Once that is done, you can use any IDE for development.
Calculation of bank capacitor value in DC application - Page 1
Forum section: electronics / general

author: oppel
author_rank: Newbie
timestamp: December 25, 2023, 12:29:16 pm
content: There is a laser in our system, but the system cannot provide sufficient current to the laser. Since the current amount is not sufficient, a PCB with bank capacitors will be designed and added to the system. Thus, current will be stored in the capacitors and the required current will be provided through these bank capacitors. At this stage, in my research on the internet, I always come across AC applications, but I need DC application examples. First of all, I would like to ask you about your experience on this subject, if you have any, literature review and sources, formulas, etc. for calculating the bank capacitor to be installed. I request.Please help me on this.

author: Andy Chee
author_rank: Super Contributor
timestamp: December 27, 2023, 08:19:57 am
content: If you are pulsing the laser at low duty cylce, then a larger capacitor bank may possibly work.But if you are shining the laser continuously, unfortunately you will need a bigger power supply.Please show your laser circuit diagram and datasheet/specifications.

author: coromonadalix
author_rank: Super Contributor
timestamp: January 02, 2024, 05:58:06 pm
content: if you dont give more details, you wont get helpare theses IPL lasersdo you have an discharge tube ?
Dynamic charge distribution within a resonant circuits windings - Page 1
Forum section: electronics / general

author: Thor
author_rank: Contributor
timestamp: November 21, 2023, 01:27:46 am
content: This is not a conventional circuit by any means I guess BUT seems theoretically logical / possible?

author: Circlotron
author_rank: Super Contributor
timestamp: November 21, 2023, 01:40:55 am
content: This circuit is from the referenced website. The bifilar inductor would have zero effective inductance, so the circuit is nonsense and clearly doesn't work as claimed. That being the case, I'd have my suspicion about anything else posted there.

author: Thor
author_rank: Contributor
timestamp: November 21, 2023, 01:49:24 am
content: This circuit is labeled as a hypothesis. As in their is no claims to it being functional just speculation.. They are just presenting a guess to what might be possible.. Seems to make sense to me though

author: freda
author_rank: Regular Contributor
timestamp: November 21, 2023, 07:03:16 am
content: Quote from: Thor on November 21, 2023, 01:49:24 amOh really?Please explain then..........(other than some electrical fireworks)

author: Simon
author_rank: Unknown
timestamp: November 21, 2023, 08:46:11 am
content: Don't double post, it makes you rather unpopular:https://www.eevblog.com/forum/projects/dynamic-charge-distribution-within-a-resonant-circuits-windings/msg5179635/#msg5179635
Telescopic linear slide forearm, based on a fire-engine-telescopic-ladder, CC0 - Page 1
Forum section: electronics / general

author: libralect
author_rank: Contributor
timestamp: September 19, 2023, 07:49:22 am
content: I have to protect this design from patenting by another company, so I'd like to make it open-source and free to copy. Has this been already built? I don't know.Telescopic rail slides are the same kind of system used on fire-engine-ladders from the 1920's, invented to save fire victims from tall buildings, kitchen and factory drawers from the 1950's and pallet loading forks from the 80s, tiny ones can carry 120 kilos, they are very strong and low cost.The differences compared to articulated arms are lower precision of about 0.5 mm, stronger force at a lower cost, environmental resilience to sand and rain, easier maintenance, no extreme precision gears and robot alloys which are expensive.This is a pallet loader, the idea is to use one on a robot arm for gardening, which needs low cost, environmental resistance, rain resistance using polyurethane roller bearings and wheels and not special robot alloys which are amazingly hard and humidity sensitive.The telescopic linear rail slide is the forearm of the robot, hinged on a shoulder, it uses timing belts, and steel or rubberized roller bearings. it's kindof a drawer slide.This robot can push-pull 25 kilos and lift 12 kilos, which is a high force for $3000 of generic motors and gears, however it is 10x less precise and has less axial fluidity.The only gears that carries major weight on this robot is the shoulder gears. it is a typical shoulder articulation from a normal robot and it's fixed on the pole that pivots on the base bearing, so it's easier to design than an elbow or a wrist. I'm thinking the cost of this system is only 1/2 of an articulated arm or a scara of the same physical strength. The motors and gears on this kind of design can use generic stepper motors and they are easier to design and seal than scara or articulated robots.Kitchen drawers also use roller bearings, it's a 3 stage cascade driven by one motor with rubber timing belts.if it's simple enough for the 1930's and has forked into various other technologies, it could be good to test for strong reach cheap robot arms.

author: MarkT
author_rank: Frequent Contributor
timestamp: November 17, 2023, 07:33:29 pm
content: I'm reminded of the way they launched the deck sections of the Millau viaduct - quite some engineering!For smaller robot drawer-slides are a cheap way to achieve this if you aren't looking for precision.
OSHW HDMI/CEC/IR adapter (Schematic/Layout) - Page 1
Forum section: electronics / general

author: oliv3r
author_rank: Frequent Contributor
timestamp: August 29, 2023, 01:50:38 pm
content: Hey all,to scratch an itch that I've been having for a long time, and not liking the fact that the commonly known HDMI-CEC adapter is closed source, I started to design something myself. Also, the commercial product doesn't do everything *I* want it to be able to do. Not sure yet where this will go yet, hopefully something for me and like minded peopleThe design is/will be open source of course, but I'm currently in the schematic/design phase and was hoping to get some review comments/feedback. The CEC bit I got inspired by ST's application note an4066 and an4879 states that we can do crystal-less USB. Also an4099 lists how to do IR transmitters and receivers. So I didn't come up with most of this stuff myselfI'm personally not sure on which power supply chip to use, so that bit may change, but everything else should be okay.So shoot off anything that could be improved, from schematics design, to design choicesI'm not an EE so anything would be helpful.I've attached both a PNG for a quick look, and a PDF. I won't "version' these yet, as they'll probably change a bit over time, this is a dated-draft if anything

author: oliv3r
author_rank: Frequent Contributor
timestamp: October 03, 2023, 07:09:28 am
content: So, after a few changes to the schematic, and countless hours of part sourcing and layout, I'm quite satisfied what I've got right nowNext steps are to set up the git repo and add the pipeline to generate some of this stuff I'm painstakingly doing manually :pThoughts/idea's are still very welcomeP.S. yeah, the 3D model for the lower HDMI connector is wrong, there was none, and lcsc doesn't seem to honor 'within 3 days' claim. So ... I just took the same connector and flipped it upside down :p

author: oliv3r
author_rank: Frequent Contributor
timestamp: October 03, 2023, 07:11:17 am
content: Strangely, only 3 attachments of the 6 survived in my previous post? So here's the other 3.
Differencial probe 10x 1MHz using as8066 - Page 1
Forum section: electronics / general

author: Apollo1234
author_rank: Contributor
timestamp: January 26, 2024, 04:58:11 pm
content: Hy there.Recently i got challenged to build a differencial probe with 10x attenuation, 1MHz BW using a low cost op amp. I alreay unerstood the attenuator but im still stuggling with the op amp feedback compensation, i read some articles but cant quite understand what im doing wrong, can someone pls help me and explain what is going on? the hase goes like crazy and cant understand where is the problem

author: Simon
author_rank: Unknown
timestamp: January 27, 2024, 10:10:08 am
content: https://www.eevblog.com/forum/beginners/differencial-probe-10x-1mhz-using-as8066/msg5300206/#msg5300206
Open Hardware STM32MP1 System On Module + MB [Work In Progress] - Page 1
Forum section: electronics / general

author: IIOSOH
author_rank: Newbie
timestamp: April 26, 2022, 06:48:54 pm
content: Hello,I am working on an Open Hardware STM32MP1 System on module in my spare time for a few months now.I’ve described my motivation behind the project and what my goals are in the GitHub repository.I’d appreciate it if you spare some time to look at the “Discussions” tab in the repository and vote in the two polls i created.https://github.com/RavnaPCB

author: Doctorandus_P
author_rank: Super Contributor
timestamp: July 23, 2022, 02:59:38 pm
content: Creating a PCB project around an STM32MP1xx is an quite impressive project.Do you know that Olimex is also working on this?https://www.olimex.com/Products/OLinuXino/STMP1/open-source-hardwareThey have also written a few times about it on their blog, I remember one of the post about long delays because of chipageddon.https://olimex.wordpress.com/?s=stm32mp1Olimex is also very friendly towards open source / hardware and they have released quite a lot of their projects on github (older projects in eagle, newer in KiCad).I just had a look athttps://github.com/OLIMEX/STMP1-OLinuXinoand I was a bit surprised that the project has not been updated for 3 years. The schematic looks fairly complete, and footprints are placed on the PCB, but not much of the routing is done. I'm guessing this is not intentionally but it just slipped in between the cracks somehow.Olimex also has a forum section dedicated to this processor. It may be a useful place to look what others are doing with it.

author: Sniper1
author_rank: Regular Contributor
timestamp: August 16, 2023, 05:35:25 pm
content: nice is it still ongoing?asking since i also started my own , well mine is more like a far RPI style and it ended up bloated and sort of lost motivation when i saw all the chip shortage and embedded linux stuff that i would need to do.

author: stevelup
author_rank: Regular Contributor
timestamp: August 21, 2023, 06:10:25 am
content: Quote from: Doctorandus_P on July 23, 2022, 02:59:38 pmTheir production board is here:-https://github.com/OLIMEX/OLINUXINO/tree/master/HARDWARE/STMP157-OLinuXino-LIME2
Query on GNU Radio Companion Threshold block and Selector Block. - Page 1
Forum section: electronics / general

author: rfengg
author_rank: Regular Contributor
timestamp: June 05, 2023, 09:10:10 pm
content: Dipping my feet into the waters of SDR and am stuck with my first flowchart.I wanted to create a flowchart in which I detect an external signal from a RTL-SDR Source block and then switch off a signal to the USRP sink created using the Signal Source block.The signal is detected using the Threshold block but how do I control the Signal source block from the outputs of the Threshold block directly without using any python scripts?I tried to use a 2*1 (2 inputs, one output) selector block, one fed with a null source and the other with the wanted signal but the 'iindex' Input index can only be messaged and cannot be controlled by the threshold block directly?Can someone provide some advice?The flowchart is attached below........I cannot seem to connect any outputs (red arrow) to the 'iindex' Input index so that the selector could be switched between the wanted source and the null source.Not familiar with Python so am not sure if I can write a block for it.
OpticalShow - use optical fibers to transmit RGB leds - Page 1
Forum section: electronics / general

author: green-bms
author_rank: Newbie
timestamp: March 31, 2023, 10:17:02 pm
content: Hello, I share my latest and simple project called OpticalShow.OpticalShow is a system that uses optical fibers to transmit the light emitted by an RGB LED matrix.Each fiber is associated with its own LED and allows you to remote its RGB light to animate projects, such as panels, maps, artistic objects and wearables.It consists of a 3D printed plastic mask that interfaces with an 8x8 RGB matrix, with a small hole of 0.75 mm in diameter near each single LED.The first application I made is an animated world map, where I lit and controlled 256 cities and where I made a 32x8 matrix for scrolling texts, here's a video:https://youtu.be/pG5Tgg9Z1HkInstructables project page:https://www.instructables.com/The-World-Is-Mine/OpticalShow page:https://hackaday.io/project/189963-opticalshow

author: RoGeorge
author_rank: Super Contributor
timestamp: April 01, 2023, 11:45:31 am
content: Wow, the fiber optics on the backside of the map are so psychedelic!

author: barshatriplee
author_rank: Regular Contributor
timestamp: April 20, 2023, 05:25:26 pm
content: OMG! What a show! Lots of hard work. How long did it take you to complete this project?

author: tooki
author_rank: Super Contributor
timestamp: April 29, 2023, 08:23:08 pm
content: Very cool!!What you might consider doing next time is to sand the ends of the fibers rather than just snipping them, to get a wider viewing angle without "hotspots".
AVR Training Board Exclusive for Dimmer - Page 1
Forum section: electronics / general

author: AliRezaJoodi
author_rank: Contributor
timestamp: April 27, 2023, 09:42:36 am
content: Open-source link:https://github.com/AliRezaJoodi/AVR_Projects/tree/main/TrainingBoardExclusiveForDimmerNote: Included schematic and PCB layout with Altium DesignerFeatures:- ATmega32 Microcontroller- 11.059200MHz External Crystal- Dual isolated power supply for SCR drivers- SCR Gate Driver (2x)- Zero Crossing Detector- 4~20mA Analog Input- 4~20mA Analog Output- 0~5V Analog Output- RS232- RS485- 16x2 Character LCD- LED (8x)- Buzzer- LM35 Temp Sensor- Potentiometer for ADC- Button (5x)Please follow and star me on the GitHubGitHub Account:GitHub.com/AliRezaJoodiLinkedIn Account:LinkedIn.com/in/AliRezaJoodiThanks
avr5hat - OSHW, Pi hat to program up to 5 AVR's at once - Page 1
Forum section: electronics / general

author: joeyjoejoe
author_rank: Frequent Contributor
timestamp: April 23, 2023, 10:23:45 pm
content: https://github.com/gcormier/avr5hatAVR1 is hardware SPI, the rest are bit-bang, but I have not seen any difference in performance to be honest.I'm only programming low power boards, so sourcing from the Pi is not an issue. According to the Pi, the 5V is directly from the USB connector, so you can source up to the max your USB supply allows. Jumpers could be easily added.

author: mjj
author_rank: Contributor
timestamp: April 25, 2023, 07:00:23 pm
content: This looks very handy. Do you know what happens if there is a problem programming one of the devices?

author: joeyjoejoe
author_rank: Frequent Contributor
timestamp: April 25, 2023, 07:46:59 pm
content: It would be the same as a regular AVRISP, so you could catch the errors if you wanted and act accordingly. The extra GPIO pins could also be used if needed.I use them to determine when a board has been inserted to start the programming process. My target board has pads shorted together - when avr5hat sees a pull-up GPIO shorted to ground, it starts programming.
Multitask Garden Robot, Emulator Prototype. - Page 1
Forum section: electronics / general

author: libralect
author_rank: Contributor
timestamp: March 11, 2023, 12:25:10 pm
content: It's a 50 lbs robot that can save 12000 lbs of food packaging waste over a 20 year lifetime, and 4000 lbs of synthesized fertilizer.https://youtu.be/EYTiTh7_zO4I see the dev cost of this robot as being 100 times less than a self-driving car: single error fatality risk, unlimited chaotic cities, 90mph compute time limits, make self-driving cars unfeasible compared to multitask garden robots.Fruit-picking is very difficult using AI, but weeding, digging, sowing seeds, irrigation, are fairly easy tasks, and an experienced developer knows that anything is possible with logic.Millions of acres of farmland are chemically and brutally treated for food that is wrapped in plastic, shipped hundreds of miles, to supermarkets, so as an environmental chemist, rural processes analyst and EE dabbler, I have created an emulator prototype for a garden robot
Open source solar controller - Page 1
Forum section: electronics / general

author: 172pilot
author_rank: Newbie
timestamp: September 12, 2021, 03:41:54 pm
content: I stumbled across this project:Listening to his video, this sounds great - I would love to hear Dave's opinion on the build, and if there are any safety concerns, and/or curious if anyone has built this or something similar?

author: Pineapple Dan
author_rank: Contributor
timestamp: January 15, 2022, 01:03:43 pm
content: There are loads of designs available, some better than others. I have made a few of my own design that Ill post later, they all work but i'm still not happy with the current capacity. I stopped making them last year as I could not get parts anymore - the ACS sensor in that design you posted is still out of stok everywhere although there is a drop-in replacment by TI available. I had just switched from using a PIC16F1509 to a dsPIC33EP64GS504 in order to get ready for a multi-phase buck design but now I can't get that micro anywhere.https://www.ti.com/tool/TIDA-010042<-- This one is quite nice but also more complex

author: bidrohini
author_rank: Regular Contributor
timestamp: January 15, 2023, 04:16:51 am
content: Seeing the casing, I do not think there would be any safety issues. Let's see if Dave responds.
Green Detect - Opensource Wireless Sensor Network - Page 1
Forum section: electronics / general

author: green-bms
author_rank: Newbie
timestamp: June 27, 2022, 02:56:39 pm
content: Hello everyone, I share my new project with you: Green Detect.Green Detect is an opensource Wireless Sensor Network Platform (WSN) , for enviromental monitoring.Each sensor module is based on Wemos D1 mini pro with ESP8266.In the network it is possible to connect from 1 to 60 sensors that transmit their data via wireless through the ESP-NOW protocol to a computer where through the Green Detect application it is possible to monitor each individual sensor, detect alarm conditions, locate the sensors in an animated geographic map and record all acquisitions in order to collect all data for preventive and statistical purposes.It has been a long and exciting project that I hope can offer a stimulus to those who want to improve it.The project is detailed here:https://hackaday.io/project/186064-green-detectRepository:https://github.com/Green-bms/GreenDetectYoutube video presentation:

author: Zipdox
author_rank: Regular Contributor
timestamp: July 07, 2022, 07:35:12 pm
content: My brother in christ, did you have to use text to speech for your video? I'd rather have text on screen.

author: green-bms
author_rank: Newbie
timestamp: July 08, 2022, 12:59:53 pm
content: You can enable subtitles on Youtube...

author: green-bms
author_rank: Newbie
timestamp: November 06, 2022, 12:46:22 pm
content: This is the video with a working prototype:
RPi 4 Robot Expansion Board - Page 1
Forum section: electronics / general

author: ChromaticMultiplexer
author_rank: Newbie
timestamp: February 17, 2022, 01:47:43 pm
content: I'm working on a RPi 4 expansion board to control a robot quadruped using RC servos and would benefit from a review. I am concerned mostly about the onboard DC-DC convertor traced correctly and other violations of best practices. Any insight is welcome! Please see attached design files and for the full source:https://github.com/reubenstr/Zuko/tree/main/pcbs/expansion-board

author: Kean
author_rank: Unknown
timestamp: February 19, 2022, 03:58:03 pm
content: My only worry would be the longish trace between L1, U6, and D2. I see you've duplicated it on an inner layer to improve current handling.I'm not sure if it would help much, but maybe you could see what you can do by swapping the position of L1 with RV1 and C7.Note that the traces between FB pin and RV1/R17 divider need to also be kept short and away from L1 as much as possible.I'd also suggest redrawing the schematic around RV1 - the orientation makes it hard to visualize as a voltage divider.

author: zeak123
author_rank: Newbie
timestamp: October 14, 2022, 06:21:59 am
content: Looks awesome!! please update us on this project

author: bidrohini
author_rank: Regular Contributor
timestamp: November 01, 2022, 04:09:47 am
content: It's better to make a prototype and perform testing.
Delays in certification  - Page 1
Forum section: electronics / general

author: sinewave
author_rank: Unknown
timestamp: August 16, 2022, 11:02:30 am
content: I submitted a certification request for a product I will be selling reasonably soon about 2 weeks ago, should I contact OSHWA or wait it out, anyone else waiting for a response?

author: ebastler
author_rank: Super Contributor
timestamp: August 24, 2022, 08:40:29 am
content: Could you educate me on the benefits of an OSHWA "certification"? The OHSWA website seems to state that it gives those who want to use (copy, build) your design more assurance that they can do so without violating any intellectual property rights.But I take it that OSHWA does not carry out a full "freedom to operate" search on your design, which would ensure that your design does not violate any 3rd party IP. (Which would be required to give you as well as future users of your design the assurance claimed by OSHWA.) So what exactly do they "certify", and what is the benefit?

author: Fixpoint
author_rank: Regular Contributor
timestamp: September 01, 2022, 09:21:18 am
content: I recommend to just apply the well-known free licenses to your project and not using any logo of any political organization, including the "OSHW" logo.Your open hardware doesn't require approval of any political organization. We are free to develop what we want without anybody awarding us a "certificate". Likewise, we can develop free software without the official approval of the FSF.The OSHWA state their purposes are to "organize conferences", "educate the public", and "organize the open hardware movement around shared values and principles". They say:QuoteYes, your project must be licensed under a free license in order to be freely usable by others. However, it doesn't need legal certification. This is a ploy. They go on:QuoteSo, you "self-certify your product as OSHWA-compliant", and"OSHWA compliance" is equated with "the community definition of open source hardware".However, the OSHWA doesn't have the authority to speak for the community. It doesn't represent the community at large, it doesn't have any mandate for that. They just want you to believe that they do so that you spread their influence.

author: rooppoorali
author_rank: Regular Contributor
timestamp: September 27, 2022, 01:15:50 pm
content: Is OSHWA certification really of any help? As far as I know, selling an electronic product needs many certifications depending on the product type and the country where it will be sold.

author: Fixpoint
author_rank: Regular Contributor
timestamp: October 25, 2022, 07:49:20 am
content: Quote from: rooppoorali on September 27, 2022, 01:15:50 pmNo.QuoteCorrect.OSHWA is a *political organization*, not a technical one. They have political goals that they want to enforce upon the community. Their strategy is to tell people that they represent the community and thus speak with authority. Of course, that's a lie.
https://kitspace.org/ - show off your designs - Page 1
Forum section: electronics / general

author: sam_uk
author_rank: Newbie
timestamp: September 21, 2022, 02:36:56 pm
content: I recently foundhttps://kitspace.org/"Kitspace is a place to share ready-to-order electronics designs. We automate parts purchasing so you can focus on building."Kind of ahttps://oshwlab.com/for Kicad/Github users.It would be great to see more boards up there.I'm not connected with the site other than as a recent user

author: rooppoorali
author_rank: Regular Contributor
timestamp: September 27, 2022, 01:10:57 pm
content: Oshlab looked complicated to me. Hope this is something simpler. Thanks for sharing with us.
OrangeHat - Raspberry Pi Robot Hat - Page 1
Forum section: electronics / general

author: 05032-Mendicant-Bias
author_rank: Newbie
timestamp: January 08, 2022, 01:28:26 pm
content: Hello EEVblogI have been working quite a while on a Raspberry Pi hat for robotics as an hobby, I discovered this blog while searching for information and I thought I'd share here the progress.After trying lots of boards, I decided to focus on the Raspberry Pi for the compute because of power consumption and software available, I'm developing an hat to integrate all the electronics needed for a robot on a single board. Specs:XT60 Power connector5V3A regulator channel for the Rasperry PiServomotors with a dedicated 5V3A regulator channelATMega 4809 microcontrollerThree channel voltage and current monitorScreenCommunication Bus (right now RS485, but I'm evaluating CAN)I release all relevant code and gerber open source, here the github repository:github.com/OrsoEric/OrangeHatOrangeHat assembled and powered as of 2022-01OrangeHat installed on a simple bot as 2022-01Youtube video of a simple OrangeHat powered bot moving

author: Leslie
author_rank: Newbie
timestamp: January 27, 2022, 04:45:04 am
content: Impressed project! looking forward updates! how about to use a small oled display instead of the big lcd?

author: rooppoorali
author_rank: Regular Contributor
timestamp: August 14, 2022, 02:48:50 pm
content: Along with Maze solver, what are the common robots that we can make with this hat?
Bytes Counter - Tally Counter - Page 1
Forum section: electronics / general

author: makingdevices
author_rank: Newbie
timestamp: August 10, 2022, 07:17:46 pm
content: This open-source Tally Counter was inspired during the corona breakdown since every shop used tally counters to control the maximum capacity of every space. The project is quite simple, really:"Bytes Counter is a simple Tally Counter for counting people in places, helping you in inventories, practising soldering or just counting things at work! The project was chosen to test some PCB manufacturer capabilities and experiment with both the XLP (Extreme Low-Power Technology) and the pic18LF14k50 itself"Github Page:https://github.com/makingdevices/Bytes-CounterI have many other unfinished open-source projects that I will be posting when ended if you are interested in these little gadgets.Thanks
CAN-FD open source software (host) stacks  - Page 1
Forum section: electronics / general

author: dav888
author_rank: Regular Contributor
timestamp: February 12, 2021, 08:49:48 pm
content: Checking in if anyone have experience with CAN-FD and what open source software libraries that are out there..!?As most USB to CAN FD bridges are $300+ and come with proprietary windows apps, there isn't much available (afaik) in the linux/c-libs/python space...!? Anyone with experience?

author: JPortici
author_rank: Super Contributor
timestamp: February 12, 2021, 10:53:39 pm
content: The good ones are usually supported by busmaster, which is free and open source, and as such lacking in (some) features

author: mon2
author_rank: Frequent Contributor
timestamp: February 13, 2021, 07:27:42 pm
content: https://circuitdigest.com/news/open-source-usb-can-can-fd-and-single-wire-can-support-debugging-or-hacking-vehicle-components

author: mattselectronics
author_rank: Contributor
timestamp: March 18, 2021, 11:12:39 pm
content: Quote from: JPortici on February 12, 2021, 10:53:39 pmBusmaster is discontinued and also the GitHub seems to be deserted. I doubt, that it has support for CAN-FD.

author: JPortici
author_rank: Super Contributor
timestamp: March 19, 2021, 02:48:56 pm
content: Quote from: mattselectronics on March 18, 2021, 11:12:39 pmI think that CAN-FD support lies in the interface driver, so it's independent of busmaster?Anyway, do you know of a free / low cost alternative to it?

author: mattselectronics
author_rank: Contributor
timestamp: March 22, 2021, 01:20:19 pm
content: When it comes to functionality, CANoe from Vector is still the best by a long shot. But it is not cheap (multiple k€), requires the approperiate hardware interface and runs only under Windows.It can do far more than only monitor. There is also CANalyzer, if you want to monitor only.CANoe is basically the industry standard and if you have to work with car/truck OEMs or there suppliers, you have to have it.For the cheaper option, there ishttps://www.peak-system.com/PCAN-USB-FD.365.0.html?&L=1for 245€They offer a Linux driver, but the Monitoring application seems to be Windows only.It also seems to be supported by busmaster so this might be an option.Unfortunately, I'm no expert with anything other then CANoe, becaus that is what we use...

author: JPortici
author_rank: Super Contributor
timestamp: March 22, 2021, 04:19:19 pm
content: I understand, we mainly do reverse engineering and wanted to evaluate that vector solution. From what we saw we would gain almost zero functionality over busmaster.Simulators written in busmaster run just fine, i would like to have the GUI functionality back but whatever, that's free..

author: rvalente
author_rank: Frequent Contributor
timestamp: March 30, 2021, 01:37:00 am
content: Check kvaser stuff

author: SignalArray
author_rank: Contributor
timestamp: May 26, 2022, 05:41:12 pm
content: Check Intrepid Control out, it is a Vector competitor and more automotive suppliers are using Intrepid instead of Vector VNs and CANoe software.https://store.intrepidcs.com/product/vcan4-2a
Easy Lithium Box, Build 1 KWh in less than 20 minutes - Page 1
Forum section: electronics / general

author: BatGroupCraft
author_rank: Contributor
timestamp: January 11, 2022, 09:31:13 pm
content: Hi, I don't know if this project fits well here: The final release will be open source, although the development release depends on a pressed metal engineer, a contact specialist, a spring physicist, an insulator specialist... Please give me your thoughts for this tech: It's completely sealable, 3D printable every size, tested for massive high current trail-bike scenario's... It's had drop tests and brutal mallet tests for contact continuity, and high current tests. The current does NOT go through the springs, it's 50amp busbars, 10 amp mini contacts, and 125amp big contacts!!! in a secret way, it's the dream design that I want for me

author: Gyro
author_rank: Super Contributor
timestamp: January 11, 2022, 09:46:25 pm
content: It has been previously been covered in this thread...https://www.eevblog.com/forum/crowd-funded-projects/new-easy-lithium-battery-boxing-system-can-build-1kw-of-18650-in-40minutes/...Err, by you.

author: BatGroupCraft
author_rank: Contributor
timestamp: January 11, 2022, 09:57:35 pm
content: Yes indeed! the replies were not einstein-level-brilliant... One guy talked about water dripping down my bolts, when they have seals, the other said the springs were conductive, when they aren't, and another guy said my motorbike battery wouldnt handle a 20 minute discharge on a drone, and therefore had very little feasable use for anything whatsoever!... what about houses and camper vans and motorbikes then? it kindof killed the topic!I am relishing the hope for ingenous commentary that would be revealed on the open source forum? Like! the caps will deform by 2.5 microns per KG when compressed, so don't put more than 5 kg force springs on every battery? Something that will teach me science!!!

author: tszaboo
author_rank: Super Contributor
timestamp: January 11, 2022, 10:01:35 pm
content: Quote from: BatGroupCraft on January 11, 2022, 09:57:35 pmThere was like 5 reply on that topic. It's entirely reasonable that not everyone will like everything you do. If you cannot handle feedback, don't ask for it?

author: BatGroupCraft
author_rank: Contributor
timestamp: January 11, 2022, 10:03:55 pm
content: Thanks Tszaboo, i appreciate your view. I only had off topic comments for a different design that didn't relate to the one i posted... No one even mentioned UL94-v0?? Like serious engineering?
Getting Started with RTL8720DN BW16 Development Board (2) - Page 1
Forum section: electronics / general

author: dakamaster
author_rank: Newbie
timestamp: August 11, 2021, 02:20:16 pm
content: Note: Original post in AmebaIoT Forum that supported with Dual Language:https://forum.amebaiot.com/t/resources-bw16-getting-start-guide/683Try the First ExampleStep 1. Compile & UploadArduino IDE provides many built-in examples, which can be compiled, uploaded, and run directly on the boards. Here, we take the “Blink” example as the first try.Open “File” -> “Examples” -> “01.Basics” -> “Blink”:Arduino IDE opens a new window with the complete sample code.There is an onboard LED of RTL8720DN(BW16), the default “LED_BUILTIN” is a green onboard LED. Change “LED_BUILTIN” to “LED_BUILTIN_B” or “LED_BUILTIN_R” for different colors blue and red. Here we use LED_BUILTIN_B as an example.Next, we compile the sample code directly; click “Sketch” -> “Verify/Compile”:Arduino IDE prints the compiling messages in the bottom area of the IDE window. When the compilation is finished, you will get a message similar to the following figure:Afterward, we will upload the compiled code to RTL8720DN(BW16).Please make sure RTL8720DN(BW16) is connected to your computer, then click “Sketch” -> “Upload”.The Arduino IDE will compile first then upload. During the uploading process, users are required to enter the upload mode of the board. Arduino IDE will wait for 5s for the development board to enter the upload mode.To enter the upload mode, first press and hold the RTL8720DN(BW16) “Burn” button, press the “RST” button, and then release the “Burn” button. Press “Upload” to compile and upload the program.Again, during the uploading procedure the IDE prints messages. The uploading procedure takes a considerably longer time (about 30 seconds to 1 minute). When the upload is completed, the “Upload Image done” message is printed.Step2. Run the Blink exampleIn each example, Arduino not only provides sample code but also detailed documentation, including wiring diagram, sample code explanation, technical details, …etc. These examples can be directly used on RTL8720DN (BW16).So, we find the detailed information of the Blink example in the link below:https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink1In short, for RTL8720DN, the example can be run on both the onboard RGB LED or external LED (use any GPIO pins for signal output). Finally, press the “RST” button, and you can see the blue LED blinking.ReferencesFor more information, please visit the following websites:AmebaIoT Forum:https://forum.amebaiot.com/Since RTL8720DN BW16 is not officially supported by Realtek, alternatively.if you want to know more about our AmebaD Family (RTL8722DM & RTL8722DM-MINI) and ambd_arduino opensource SDK, please also visit:AmebaIoT official website:https://www.amebaiot.com/en/Join our FB Forum (English version) to further discuss with us:https://www.facebook.com/groups/amebaioten
Search  partners to  join  the open source hardware team - Page 1
Forum section: electronics / general

author: Ohahei
author_rank: Newbie
timestamp: April 23, 2021, 01:45:30 am
content: A 10+ years old EE in china and now do not work in R&D repartment. There free time to join the open source hareware team. Skills:SCH &PCB design , SMT and supply chain. Call me if your good idea. My email :tech.fun@qq.com

author: RoadRunner
author_rank: Frequent Contributor
timestamp: April 27, 2021, 08:20:45 am
content: Quote from: Ohahei on April 23, 2021, 01:45:30 amWithout any already available open work of the project. It sounds like, I need free workers.

author: nuclearcat
author_rank: Unknown
timestamp: June 20, 2021, 12:55:26 am
content: Quote from: RoadRunner on April 27, 2021, 08:20:45 amProbably he suggest that he want to participate in opensource team?

author: redben
author_rank: Contributor
timestamp: June 25, 2021, 12:38:48 pm
content: In what field would you be interested in working ? Do you have any interest in electric bike technologies ?
Need to simulate LPDDR3 - Page 1
Forum section: electronics / general

author: kingkone
author_rank: Newbie
timestamp: June 05, 2021, 01:28:09 pm
content: Hi,we are a very ambiguous hardware project, we set out to make hardware for OpenHD. (Realtime first person video for drones)We have a nice SoC with a fast H.264/H.265 encoder, software work on the drivers and ISP is on the way.But the SoC needs RAM. As I learned about DDR3 and the specifics of LPDDR3 I noticed that we need tom simulate it.We don't have the money to get a big package like Allegro or Altium.So do you guys have a tip for us, how to accomplish this task.I am willing to learn and like to invest a lot of time.I know about atlc and also got it to run but I have no way of creating the images needed for it yet.Also i have no clue yet how to get that "open eye graph" with the tools I have so far. Can i do that with Spice aka ngspice in Kicad?As everyone uses the of the shelf tools information on this topic is sparse.If someone could point me in the right direction, it would be niceI have learned that i need to do the length matching of the 4 bytes, address and control lanes on a ToF basis.I know that i can view the lanes separately with the respective clocks, data strobes.Thx in adv.Daniel

author: nctnico
author_rank: Super Contributor
timestamp: June 05, 2021, 02:31:15 pm
content: You don't need to simulate it perse. Just follow the routing rules from the SoC's hardware manual and look closely at the layout for a demo board. What will be critical is length matching but Kicad should be OK for this. I don't know if you can group routing constraints in Kicad. Either way you need to layout the traces with room to add extra length. Worst case you need to check which trace within a byte group (including DQ signals) is the longest and then make the other lines just as long. Be sure to check whether you might need to compensate for package delays inside the SoC. Be prepared to make an Excel sheet to keep track of what you are doing.

author: kingkone
author_rank: Newbie
timestamp: June 05, 2021, 03:22:49 pm
content: Thx nctnico!>You don't need to simulate it perse.Good to hear that.Also yes I know that i only need to match the traces of their group, not forgetting about the DQ signals for sure ;-PSadly the demo boards are Allegro files and using only using DDR3, we on the other hand using a eMCP with LPDDR3 because of space constrains.Pin-out for the different DDR modes are totally different.> package delays inside the SoCgood point =OYes KiCad can help with length matching, but not time based, have to calc that myself then. I'll will have a look DRC in KiCAD, good idea.I took a note not make notes of it ;-PGood to read that what i learned so far is not completely wrong. Thank you!
Minipro for TL866II Plus Error with .JED file - Page 1
Forum section: electronics / general

author: Nickpga
author_rank: Newbie
timestamp: June 03, 2021, 06:19:44 am
content: I just noticed this part of the forum is for HARDWARWE OS not SOFTWARE. Sorry!I want to program an ATF22V10C chip I have, however, Minipro states that the .JED file is not valid for my target device. I used WINCUPL and set the device to g22v10.I should be able to fit the design into an ATF16V8 chip I have, but I may get the same error.Any ideas?QuoteThanks
Fethead / Cloudlifter style phantom powered dynamic mic preamp - Page 1
Forum section: electronics / general

author: Zipdox
author_rank: Regular Contributor
timestamp: March 16, 2021, 08:02:54 pm
content: I made an open source dynamic mic preamp similar to the Fethead / Cloudlifter.It's published here:https://oshwlab.com/zipdox/fetheadHere's another thread I posted it in:https://www.gearslutz.com/board/geekzone/584378-make-diy-inline-preamp-like-triton-fethead-2.htmlHere's what is sounds like(albeit a terrible microphone)Please let me know your opinion!
[Questionnaire] Requirements for the certification system for OSH - Page 1
Forum section: electronics / general

author: Zackertin
author_rank: Newbie
timestamp: June 02, 2021, 02:35:35 pm
content: Hello everyone,I’m writing my Master thesis, which is related to certification for open source hardware.So there is a little questionnaire for that (only 9 questions), please help me~~~Thank you very much!!!the Link is below:https://docs.google.com/forms/d/e/1FAIpQLSeFNDTrFogPCCfskK9Ebhp9LZvqLvbJ94JfuhWCCbvNik865w/viewform?usp=sf_link&urp=gmail_link

author: fcb
author_rank: Super Contributor
timestamp: June 02, 2021, 03:43:44 pm
content: 11 q's including the first (in chinese) not 9% is not a currency - doesn't make sense for certificate cost?Occupation has spelling mistake - 'ohters', assume you mean 'Other'?