For a hobbyist weather station project I am going to use a Raspberry Pi and a Si7021 temperature/humidity sensor. If possible, I want to use one of the available casings, and enclose my Pi and the sensor in the casing. Now I wonder how to minimize the measurement error.
So, where to place my my sensor best? What is the hottest part on a Raspberry Pi under light load? I guess the CPU, but maybe it could also be the USB for the power input?
These constraints apply:
- headless mode, no monitor or USB use
- LAN access
- Casing is this, which has some holes in it Image:
- I intend the case to wall-mount
- Model is a Raspberry Pi 2, Model B
- As an indicator, the core temperature is typically around 42 to 44 degrees Celsius.
- A FLIR camera would help of course, but I do not have access to one of those.