Getting an Ultrasonic sensor working over I2C (M5stack RCWL-9620)

ESPHome
#1

I’ve got an M5Stack Ultrasonic sensor (RCWL-9620). I’ve had others like the A02YYUW but they’re UART.

This one is plugged into a PoESP32 unit, and the I2C is showing it finds it at 0x57 correctly:
image

But I can’t work out a configuration to get it to show the distance.

It doesn’t appear on the supported device list here unfortunately:
https://esphome.io/api/classesphome_1_1i2c_1_1_i2_c_device.html
Is there a way to set it up as a custom device of some description / get it to work?

Any advice / guidance on making it play ball would be appreciated

Edit: The docs from M5Stack: m5-docs

#2

Have you read:

https://esphome.io/custom/i2c.html

#3

I hadn’t, thanks for the heads up. I had a feeling there would be a custom one somewhere.
Much obliged :slight_smile:

#4

Had a try, didn’t have any luck getting things to go based off the libraries from the M5stack site. Unfortunately I’m not a developer.

If there is anyone who’s managed to get that particular model working, I’d love to hear the specifics of how.

#5

In case somebody chances across this in the future, I had someone help incorporate the library from M5Stack:

Instructions for the RFID2 and Ultrasonic I2C RCWL-9620 should now be good there. Tested both, confirmed working well on an Atom Lite and a PoESP32 device :+1: