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IoT PIR Sensor Board-Best Microcontroller to use?
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IoT PIR Sensor Board-Best Microcontroller to use?

by MARCHA17 on Mon Nov 11, 2019 12:36 pm

Hello!

I am working on a project of using a battery-powered PIR sensor to pick up movement and then send a time and date stamp via either email or into an accessible dashboard via adafruit.

My first go-around was a Raspberry Pi Zero W and the PIR sensor sold on the Adafruit website, but the power usage was a bit too much.

Are there any suggestions of different microcontrollers that are easy to program like the Raspberry Pi Zero, have wi-fi access, use little power, and are small?

Thank you very much for any suggestions!

MARCHA17
 
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Re: IoT PIR Sensor Board-Best Microcontroller to use?

by brubell on Mon Nov 11, 2019 12:56 pm

Hi MARCHA17,

My first go-around was a Raspberry Pi Zero W and the PIR sensor sold on the Adafruit website, but the power usage was a bit too much.

Yep, the Pi is more akin to a computer than a microprocessor.


Are there any suggestions of different microcontrollers that are easy to program like the Raspberry Pi Zero, have wi-fi access, use little power, and are small?


The Metro M4 AirLift Lite is a microprocessor which (https://www.adafruit.com/product/4000) can run CircuitPython, similar to the programming in Python you were likely doing on the Pi. We have an Adafruit IO CircuitPython library which is easy to use and well documented. You could also pick up an AirLift WiFi FeatherWing (https://www.adafruit.com/product/4264) and a Feather M4 Express which is smaller.

For a very low power draw (but harder to program) microcontroller, you may want to consider a Feather HUZZAH32 (https://www.adafruit.com/product/3405). It's a feather form-factor, well documented, but will require you to learn the Arduino programming language instead of python. There's lots of examples on the topic on learn.adafruit.com, though!

brubell
 
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Please be positive and constructive with your questions and comments.