The board will be soldered to an Arduino Nano.
At the current state it has one PWM driven analog output and 2 DAC´s.
We ordered 10 pieces of PCB and will start testing this Board soon.
It would be great if somebody could take a look at the code.
Maybe in future this code could be implemented to the Speeduino code.
All KiCad project Files can be found here:
Let me know what you think. UPDATE 10.04.2020
The Arduino based Nano Lambda Board has been extensively tested and is working as expected.
Alfagt has made an superb firmware for the Nano Lambda which can be found here:
For my understanding, there is no Controller out there with such extensive adjustment capabilities.
Via TunerStudio it is very easy to connect and tune. One can tune the analog outputs to compensate non linear behaviour and offset error.
tooly made an very convenient and easy to build Board named BL49SP. It is an 2-Layer Board with components only on one side, which make it also inexpensive to build. The Gerbers Files as well as Schematic can be found here:
Alfagt made an non open source Lambda Controller based on his firmware and improved hardware -BL49 by tooly- which has an extensive set of CAN functionalities as well as extended configuration options which I think are unique for an Lambda Controller. For more information check this Link:
Please post a comment or picture if you have build one Nano Lambda or BL49SP Bard.