hello Ken,

I am glad you fixed it successfully.

The PM sensor must not be mounted on top of the PCB,

instead it must go through the PCB in the designated area. Basically it fills the entire aluminium enclosure height, going through the PCB.

Here’s a picture:

hi Catalin, seems something went wrong when provisioning your unit with the custom firmware . I will get back to you with the correct firmware on email. It’s very easy to program it, here are 2 tutorials:

The Easy Smoggie Firmware guide

Smoggie Firmware Update

Thanks for your efforts, Ken . Is there any chance you can send it to a friend just to give it a run on a different provider / connection ?

Milibars and temperature in F are to be added to the dashboard for the next update.

Ken, this is a very old post, and since then the time on the website has local UTC setting. When looking at the data on http://www.uradmonitor.com it will now show it in your local timezone.

Years ago, there was server generated charts with hardcoded timezones.

Hello Ken, thanks for the detailed observations.

Given all the above and your other posts, it seems that there is an issue that we still don’t clearly understand. Please keep in mind that the FW running on your unit is stable and there are multiple other units using it with no reported issues. This is why I would like you do run another test, and connect your unit to a separate network . Either give it to a friend, or create a small separate network (via GSM, etc). Please connect it to this separate setup to rule out this direction. Yes, I fully understand that you have other devices using it, but it is important to understand more.

If the unit reboots frequently, it can impact the CO2’s sensor autocalibration that runs on an internal timer.. I’d try to get the A3 to run stable first.