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Hello @admin,

I came across this forum post describing the Meteobridge PRO2s four pinouts on the back:

First of all pinout when looking at the back panel from behind the PRO2 is from left to right:
- SCL
- SDA
- GND
- 3.3V

There was a word of caution that really stood out:

When you connect a device while PRO2 is powered on you have a good chance that PRO2 hangs up. When you connect incorrectly you can damage the PRO2. So please be careful.

I own two Waveshare BME280 Environmental Sensors that measure temperature, humidity, and barometric pressure. One of these is currently serving my Raspberry Pi4, while the other one is unused.

BME280 to Raspberry Pi 4 connection I used:
- VCC to Pin #1 (3.3V)
- GND to Pin #6 (Ground)
- SDA to Pin #3 (SDA)
- SCL to Pin #5 (SCL)


The manufacturer's site indicates that the BME280 uses the I2C address 0x77, which luckily does not conflict with the Meteobridge PRO2s internal addresses already in use (0x3c, 0x41, 0x45 and 0x76).


Do you think it's feasible to connect the Waveshare BME280 to the Meteobridge PRO2? My main aim is to gauge the ambient room temperature instead of the temperature inside the PRO2's enclosure.

If anyone has tried this or has technical insights about this integration, I'd greatly appreciate your advice before attempting any connections to the pinouts.

Thanks in advance for your time and assistance!

Best way to have a more realistic indoor temp/hum would be to use one of these modules. They fit perfectly into the back and they are already supported by Meteobridge SW.

https://www.aliexpress.com/item/1005003327901391.html