Hey I was wondering if you plan to make a analog input card (0-10vdc, 4-20mA, maybe even thermistor like 10k2 or 10k3 type) and a analog output card for 0-10Vdc and/or 4-20mA.
On the early days of the project, Jos Terlouw created an analog input module for the concept hardware, but I ended up never publishing it (shame on me ). He even got a video on youtube with the project working: https://www.youtube.com/watch?v=KWDz0rthhfM
However, since I moved the support to other platforms, I kinda forgot about the concept hardware. Currently, even if you build it, it won't be compatible with the actual version of the software. But I'm planning to create new boards this Fall based on the current concept hardware that will be compatible with the updated software. I'm looking for partners online to manufacture the boards because I would like to sell them. Unfortunately, all the platforms the OpenPLC runs on lack something, like electrical protections, measurement accuracy or speed. I want to build the platform that will be the perfect low cost solution for home and industrial automation. I just hope I will have time to do it. Meanwhile, you can stick to RaspberryPi + Arduino + some shields for your analog measurements.
Thank for putting this out there, it is amazing work you did on this.
Thanks! The feedback from users is my biggest motivation factor