AirGradient Forum

new unit reboots every 10-15 minutes

#1

I received my preassembled I-9PSL in the mail today. I added the three sensors enclosed, turned on power and started the unit. I was able to log onto the captive portal, then configured my local WiFi. Power is provided via the 2.4A rated USB converter that’s part of a power strip. My Homeassistant discovered the device as well and added it.

I am able to access /config and /measures/current, which reports:

{
   "atmp" : 21,
   "atmpCompensated" : 21,
   "bootCount" : 4,
   "firmware" : "3.1.1",
   "ledMode" : "co2",
   "model" : "I-9PSL",
   "noxIndex" : 1,
   "noxRaw" : 17097,
   "pm003Count" : 0,
   "pm01" : 0,
   "pm02" : 0,
   "pm10" : 0,
   "rco2" : 977,
   "rhum" : 37,
   "rhumCompensated" : 37,
   "serialno" : "84fc*******",
   "tvocIndex" : 98,
   "tvocRaw" : 30694,
   "wifi" : -37
}

The device appears to reboot every 10-15 minutes. My question:

  • should it reboot every few minutes?
  • how can I upgrade the firmware? I understand the device supports OTA updates, but I haven’t seen how to do this. I’ve seen some instructions that make it appear that it could be done over a serial/USB line, which I haven’t tried.
  • I understand that airgradient.com runs their our cloud backend. Can this be used along with HA, or is this an exclusive or? If it can’t be used with HA, is there a way to update the firmware remotely?

Thank you.

#2

Some updates: I’ve connected it to a powered USB3.0 hub, updated the firmware to 3.1.13, and its bootCount is now 245, so it seems to have run over night. Will resume testing with the powerstrip supply.

I also was able to add it to airgradient.com, but this seems to have no effect (for instance, the interface there says Fahrenheit, but the display still shows Celsius.)

#3

Unless you explicitly put it into Offline mode, then if it can’t communicate with the Dashboard servers, it will trigger the hardware watchdog to do a reboot of the device.

So likely it was adding the device to the Dashboard that resolved the issue, but if you don’t want it uploading, there is a way to set it to Offline mode so that doesn’t happen