Show HN: Enviro+ for Raspberry Pi – Environmental sensors
Weirdly coincidental timing on this! I've been working on a PCB design (FeatherWing form factor) to track weather data on my hikes, making use of a BME280 and a GPS module. First revision of the board[1], I discovered that the sensors started out accurate, then drifted up to a steady 3° above ambient. Probably because the GPS module was heating up. So last night I found myself reading up on design considerations for temperature sensors [2], including specific things like the cutout you have on the left side of this board.<p>I'm guessing you designed this — any advice as I embark on designing a second revision of my hiking log?<p>[1] <a href="https://twitter.com/josecastillo/status/1134128199972130816" rel="nofollow">https://twitter.com/josecastillo/status/1134128199972130816</a>
[2] <a href="http://www.ti.com/lit/an/snoa967a/snoa967a.pdf" rel="nofollow">http://www.ti.com/lit/an/snoa967a/snoa967a.pdf</a>