Pat is totally correct. I have an indoor weather display using a 7" LCD display with a Pi attached to the back. I started out with a BME280 attached to the back of the Pi and connected via GPIO. It worked great but the temp was always high. I tried many things to make it accurate but in the end decided that it was not possible. I ended up building a remote sensor board using an ESP8266. This works flawlessly and yields a very accurate reading always.
On Thursday, December 13, 2018 at 4:37:05 PM UTC-8, Pat wrote: > > The only downside I can see to this is that the BME280 is above the Pi, so > it's gotta be picking up ambient heat coming off the Pi itself. I noticed > that with my setup I have now - I'm using a Moteino to receive Davis ISS > packets (a very involved DIY project), and when I had the Moteino and > BME280 on top of the Pi the temperature was off from the console. As soon > as I moved it to the side away from the Pi it matched the console exactly. > > The BME280 is a very sensitive device. Surprisingly enough I have 2 from > Adafruit which were bad. I bought a cheapo $9 off Amazon and it's been > perfect (in that it matches the Davis console exactly on > temp/humidity/barometer). > > Photo attached of the Pi and Moteino. It's not on the window sill > anymore.. it's on my desk which is further away, but still works great! > > > On Thursday, December 13, 2018 at 9:37:20 AM UTC-5, Louis De Lange wrote: >> >> Pat, one more thing that's is really useful is that the weather board has >> an extra RJ11 connector with 3 spare analog input channels that can me used >> for additional sensors such as solar, etc. > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
