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Meshtastic device firmware
https://meshtastic.org
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PMSA Sensor no detected[Bug]: #3690

Open MALAONE1 opened 3 months ago

MALAONE1 commented 3 months ago

Category

Hardware Compatibility

Hardware

RAK 4631, TTGOs

Firmware Version

2.3.6

Description

I have two PMSA 0031 sensors that are supposed to be Meshtastic compatible. I have one from RAK Wisbock that I can plug in directly and I have one that I can solder to the I2C interface. The sensor is not recognized or auto detected by the RAK 4631, Lora T3S3 and TTGO Lora32 1.6. The air quality module has been enabled in the telemetry module. This was not recognized in the previous firmware either

Relevant log output

No response

shodan8192 commented 2 months ago

Hello, I have RAK4631 with RAK12039 (PMSA003I). This sensor become detectable on I2C bus after ~3 seconds from powering up, when scan is already finished.

Inserting delay(4000) after digitalWrite(AQ_SET_PIN, HIGH) in this code should help : https://github.com/meshtastic/firmware/blob/75dc8cccecd52da78f1d69eeb4eb017fbc68f26c/src/main.cpp#L371-L375