![]() I can't remember specifically what I disliked because I replaced the firmware with EspHome long ago and set up a grafana dashboard to monitor it. The dashboard is basic, had some annoying bugs, and they want you to pay for it. I could try to calibrate it but I doubt it's a simple offset. I tried mounting the airgradient vertically to try to induce a draft to clear out the generated heat but that didn't help. The temperature sensor always reads high by about 5-10 degrees F, even when installed in the recommended far corner position. I think part of the problem is the loose fit of the included pin headers, soldering the sensors directly may help. I did try out various levels of I2C pull-up and removed redundant pull-ups from the modules that came with them installed. ![]() I never got the SHT3x temperature sensor to work reliably in the bottom corner position, so I moved it to the open top spot. Reducing the speed to 100kHz helped somewhat but made the display update slowly. I had issues with the reliability of the connection to the I2C sensors, especially after adding the SGP30. The USB power cable sort-of holds the clamshell together without them. I never got them in all the way and gave up on them after the first disassembly. The included screws for the case are tiny, soft, and aren't self tapping. The instructions aren't great, but I can't remember what I had trouble with specifically. The included software and cloud dashboard are convenient and functional. I think the kit is a good value, it's convenient to get everything all together, and the injection molded case is nice. I bought one of the DIY Pro kits and put it together.
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