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Connect PMS5003 PM2.5 to the Metro ESP32-S2 Board
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Connect PMS5003 PM2.5 to the Metro ESP32-S2 Board

by Tom_Henry on Sun Aug 01, 2021 11:32 pm

I am trying to connect my Adafruit PMS5003 PM2.5 Sensor to my Metro ESP32-S2 board.

The PM2.5 sensor needs to connect from the TX connector to a board with an RX connector along with the VCC and GND.

I have a Metro M4 AirLift Lite that has the RX connector and I can connect it to that board.

I can’t seem to locate an RX connector on the Metro ESP32-S2 board.

I have attached a screenshot of the Metro ESP32-S2 and I don’t see an RX connector.

Does the board have an RX connector?

Are you able to connect the PMS5003 PM2.5 Sensor to the Metro ESP32-S2 board?

Thanks,

Tom Henry
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Re: Connect PMS5003 PM2.5 to the Metro ESP32-S2 Board

by adafruit_support_mike on Tue Aug 03, 2021 8:39 pm

The ESP32 is kind of an odd duck: you’re right that there are no standard hardware Serial pins (there are a couple of pins that connect to the debugger’s UART, but that isn’t general-purpose IO.

Thing is, you can make a UART using any pins you want. This tutorial page shows how to do it:

https://learn.adafruit.com/circuitpytho ... art-serial

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