AirGradient Forum

new indoor kit, led screen not lighting up?

I just put together the indoor kit. using a 5.1v 2.1a powere adapter (apple). The LED screen does not light up but the CO2 module has a yellow flash every 2-3 seconds. Suggestions please, thanks.

Hi there! Did you follow the build instructions exactly? Please go through the build instructions once again and make sure you’ve installed the TVOC/NOx module and the temp/humidity module in the right pin sockets with the AirGradient logo facing outwards. The behaviour you’ve described it associated with one of those modules being misplaced / not facing the right away.

Thanks for replying. I checked the postions and the orientation for those modules and they are correct. Purple temp/humidity in the lower right and TVOC/NOx in the upper right, both facing me.

Did the screen ever show anything, such as during boot up?

Can you include a photo of your board?

The screen has never lit up.

Here is a photo of the board. I’m only allowed to upload one image per post.

Close ups available if needed.

The CO2 module flashes every 2-3 seconds.

Additional info:

I was able to connect to the dashboard. However, there is no data uploading and the connection is lost after a fairly short period of time (unsure, maybe 20 minutes).

Your chip in the upper right is not installed properly. It should be facing outside of the board.

You can see how in the upper right one of the pins says SDA but it doesn’t align with the label of SDA on the board.

Flip it around and double check against the instructions and then you should get the display back.