OpenTester

Open Hardware / Open Source project for electronics testing and firmware upload

Henrik Sorensen

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Description

About a 1½ years ago, I designed a stackable piece of development and test equipment for Aerospace hardware development. During a conversation, I found out, that colleagues of mine in my current job had spent 2 years trying to develop something similar.
It gave me the idea of revisiting my old project with a few lessons learned, and I reached out on LinkedIn with a preliminary set of specs and got some nice feedback. I decided to push on with this and make it completely Open Source / Open Hardware, so people can play, expand or just use it if desired.

This is a work in progress and will be updated, as I find the time.

Currently, I've disabled comments, until I have a bit more to show.

Details

Developing and testing (mostly) embedded systems can often require a lot of external equipment for juggling e.g. external pins and / or analog signals.

Based on my old project made for the Aerospace Industry, I've decided to reinvent it and make it Open Source / Open Hardware in the hope, that other could benefit of it and come up with changes and extensions for it.

Currently, I'll be basing the system on the Raspberry Pi 3 (had one lying around) and mostly whatever, I can find in my components storage - mostly due to the components shortage.

Project Logs

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FINALLY!!!!
Henrik Sorensen • 04/28/2023 at 10:47 • 0 comments

The last components got delivered... Only a lead time of more than 1 year!!!
Finally, I can continue with the prototype..
Digital I/O Board mk 2 PCB designed
Henrik Sorensen • 02/13/2022 at 21:09 • 0 comments
Decided to make a simpler prototype of the Digital I/O Board :
Instead of having the intended STM32(F205) based board featuring nice things as :
- Onboard test programs
  - Sporting fixed timed sequences
  - Patterns
- Connecting to the SPI bus using over-engineered addressing decoder functionality
The board now connects directly to I2C bus but still features the desired functionality :
- 2 x 8 bit ports which can be either input or output
- 1 x 8 open switches (Opto Couplers)
- All connectors aligned with the connectors on the Raspberry Pi for easy front plate design.