Suggestion for microcontroller for IoT project

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roknjohn
 
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Suggestion for microcontroller for IoT project

Post by roknjohn »

I need to build about 30 small devices to perform a small monitoring task and looking for hardware suggestions. The controller would be bare minimum, but with WiFi obviously. And, since I'm building 30 of these, I really want the lowest cost option.

I have a machine that contains a small 110VAC fan. Any time the fan turns on or off, I would like my device to send a notice to a web server. So logically, it polls an input pin to determine the state, if different, then it sends a HTTP GET request to a REST endpoint with a ON/OFF status.

Any suggestions?

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mikeysklar
 
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Re: Suggestion for microcontroller for IoT project

Post by mikeysklar »

It's hard to beat the $6 Pico W for inexpensive WiFi. If the controllers will be locate a good distance from an access point you should consider a unit with an Antenna like this Qt Py ESP32-S2 w/Antenna Port

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