PMS5003 shows "Unknown" values

Components
#1

I have loaded ESPhome onto my AirGradient Pro kit. Everything is worked except the PMS5003, it doesn’t seem to get any values at all. The values stay “Unknown”. I don’t seen anything in the logs related to the PMS device at all. I am still new to ESPhome devices, is there anything I can do to help troubleshoot the issue? Maybe turn up logging?

Relevant config sections:

uart:
  - rx_pin: D5
    tx_pin: D6
    baud_rate: 9600
    id: uart1
    
  - rx_pin: D4
    tx_pin: D3
    baud_rate: 9600
    id: uart2

sensor:
  - platform: sht3xd
    temperature:
      id: temp
      name: Temperature
    humidity:
      id: humidity
      name: Humidity
    address: 0x44
    update_interval: 10s
    
  - platform: pmsx003
    type: PMSX003
    uart_id: uart1
    pm_1_0:
      id: pm10
      name: "Particulate Matter <1.0µm Concentration"
    pm_2_5:
      id: pm25
      name: "Particulate Matter <2.5µm Concentration"
    pm_10_0:
      id: pm100
      name: "Particulate Matter <10.0µm Concentration"
      
  - platform: senseair
    uart_id: uart2
    co2:
      id: co2
      name: "SenseAir CO2 Value"
    update_interval: 60s
#2

Did you try with the Arduino AirGradient code?
If that also does not work, please send photos from both sides of your PCB.

#3

Yes, with the stock firmware it shows PM: -1. Here are some photos showing the stock firmware screen, along with the front and back of the PCB.

PXL_20221218_215834759
PXL_20221218_2158347591920×2550 217 KB

#4

Because I can only post 1 picture per message, here is the other side.

PXL_20221218_215847220
PXL_20221218_2158472201920×2550 245 KB

#5

I am fairly sure I have a bad sensor, as I can send it commands on the UART and the fan starts and stops spinning. So it appears to be communicating with the device, but I never get any values from the sensor itself.

Start sensor: [0x42, 0x4D, 0xE4, 0x00, 0x01, 0x01, 0x74]

Stop sensor: [0x42, 0x4D, 0xE4, 0x00, 0x00, 0x01, 0x73]

It responds to those commands, the fan starts and stops when it receives those. But I never get any reading values.

#6

Yes it looks like the PM module is broken. I sent you a PM already regarding replacement.