We are developing an Arduino expansion board and, in the near future, a Raspberry Pi Pico for small business automation. The board can be used to control lighting, ventilation, pumps, integrate sensors and actuators without complex configuration.
It supports Arduino IDE, in the future Raspberry Pi Pico (MicroPython/C++).
To make the right decision and make it as useful as possible, answer the following questions in the topic:
What projects have you realized on similar boards?
Have you used Raspberry Pi Pico or Arduino for automation?
Have you encountered any problems? If yes, which ones and how did you solve them?
I will be very grateful for your answers!
Contact info: tg @crowpaw
Shouldn't this be under the Paid Consultancy category?
i am using the Funduino expansion board all the time for developing RC related items
The board is a few euro's only and very handy with the replicated GND and VCC rail for each pin.
Thank you for your answer! But is it mean you don't use 12/24VDC sensors and actuators? When we design board we think not enouf use arduino pins directly 
I think not. Consultation and opinion are little bit different. We don't ask how we should do, we want know your experience) And unforturnely we don't pay for answers. I hope on your understanding 
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Sensors usually go directly to the MCU pins. Actuators via a couple of mosfets.
I think it's a great idea: I've looked for similar boards in the past. But in 2025, I wouldn't bother supporting the Nano (Mega328 version). I'd go straight to the Pico.
what was main purposes of using them? maybe some projects? if so, which specifically?
To save time assembling multiple boards
