I’ve got working code to upload to AdafruitIO, and working code to read PMS2.5 data in seperate instances. I also have code that in theory should work but exhibits a conflict on pin D11. My REPL output as follows : code.py output: Traceback (most recent call last): File "code.py", line 34, in <modu…

I’m not sure you’ll be able to fix this in software, both of the boards will be hard wired to that pin. What you can possibly do is wire the PMS5003 separately and assign the pins yourself, but that won’t be as tidy obviously.

Seems like a big oversight if the defacto standard for MQTT uploading via WiFi conflicts with the Pimoroni featherwing.

E mailed support, raised on discord and also as an issue on the repository for the library. Adafruit don’t have a library in mpy so you have to resort to putting a full UART routine into Circuitpython to read the sensor, and that because of buffer actions in the MQTT libraries doesn’t play nicely e…

I’ve just watched the most recent Top Secret video by Adafruit on YouTube and they’re in the process of making an i2c version of the PMS5003. It would suck to have to buy an additional board but at least it will be an option.

I know - they shared the library with me yesterday that Limor had produced a couple of days prior. It is (or was) a little known capability of the PMS5003 that it can do both UART and I2C - Plantower only marketed certain models as I2C, not including PMS5003 at the time. Problem is that library i…

Hah, sounds like you’ve got all of the right connections! I haven’t seen the datasheet but I’d like to imagine it wouldn’t be too hard to put a software module together. Even if Pimoroni don’t make an official Enviro+ library with it included you could always roll your own.

Hi - Just wanted to say thanks for raising this. I’ve had exactly the same issue with the pin conflict when trying to use the Airlift Featherwing to send the Enviro+ readings to Adafruit IO. It does seem to be an annoying design issue (along with the temperature being way too high). Ideas to solve …

Hi Stephen, I ended up just using the PMS5003 by itself through this - https://shop.pimoroni.com/products/particulate-matter-sensor-breakout and using an ESP8266 with some arduino code to use the Thingspeak API instead of AdafruitIO. My PMS5003 feed is currently on my site at https://wildestpixel.…

Wow! Site looks great and that is a neat (and cheap!) solution. Will copy you if that’s OK 😉 I could have saved myself the cost of the featherwing but you only ever learn by doing! Thanks again

Enviro+ Featherwing with Airlift Featherwing

Support

Shoe May 26, 2020, 12:04pm 4

It does indeed, but you’d have to ask Pimoroni why they chose those pins. Maybe ping them on Twitter? It’s a bit easier to get hold of them there.

Topic		Replies	Views
Enviro Weather Pico W Support	3	413	December 22, 2022
Pico Enviro + Pack MQTT help Support	12	881	July 9, 2025
Which feather to use with enviro+ Support	10	1326	January 7, 2021
Some problems with PMS5003 on pico-enviro+ Support	2	346	February 22, 2023
Pico Enviro + Question Support	0	229	September 12, 2022

Enviro+ Featherwing with Airlift Featherwing

Related topics