Low cost acquisition board




I would like to do some automations using node-red, finding a small computer is easy but I can’t find a low-cost card with multiple Analog/Binary IO.

I want to control ON/OFF valves/pumps, read many type of sensors like temperature/pressure etc.. and everything must be certified (CE or CSA) for US/Canada.

Is there any good remote IO board like that? Can be ethernet/rs485,etc…

Thanks

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Original article: Low cost acquisition board
Author: /u/J_Pelletier