Please help me hardball a serial read

PlatformIO IDE
1

I don’t know if what I want to do can be done.
I got this particle sensor for air quality:
https://www.aliexpress.us/item/3256803155923611.html?spm=a2g0o.order_list.0.0.1b4f1802RzPpKE&gatewayAdapt=glo2usa&_randl_shipto=US

It has a really simple pinout- VCC, Gnd, RX, TX. It has a PWM pin.

I want to capture the serial output and figure out how to parse it.

I see someone used Software Serial, but he used stuff you don’t have to do correctly in Arduino, which doesn’t fly in PIO.
Do you know how to do this?

2

Well what microcontroller do you want to use for reading?

Given

grafik

grafik
grafik808×656 104 KB

You can use a 3.3V based microcontroller (but still give it 5V supply voltage).

The baud rate is slow anyways, so SoftwareSerial can be used without problems.

3

Early basic attempts were with R32.
But I don’t think i understand how to power it. I’m giving it 5V, but the fan isn’t blowing. There’s no LED that I can see.