BME/BMP280 not working - Solar node Build (Heltec T114)
Hi everyone,
I'm trying to set up a remote solar-powered weather node on a mountain peak using a Heltec Mesh Node T114 running firmware 2.7.15.567b8ea, newly flashed and configured.
I am trying to connect an external waterproof BME280 probe (the tube-style one with a blue internal PCB, featuring a 662K LDO regulator, a 6-pin level shifter, and built-in 10K pull-up resistors) i found on Amazon
I am checking the device via the Phyton CLI, Environment metrics are completely missing from meshtastic --info, and when i run a --noproto trying to ping the metrics from another node the results are only zeroes, and therefore no indication of the presence of the sensor is shown at all neither from the serial of the T114 nor from the indications shown to other nodes in contact.
I have read that my sensor is probably the 5V version that works only with the usb plugged in, i re-wired the whole thing on the 5V pin with the following structure :
VCC - P1 - Pin 1
GND - P1 - Pin 2
SCL - GPIO 7 - P2 Pin 4
SDA - GPIO 8 - P2 Pin 3
(I know the SCL and the SDA may seem inverted but some chinese supplier tend to do that, as you can see in the diagram i posted)
I am looking for some advice as i would love to have some environmental metrics on my high altitude solar build, i Looked everywhere but i can't find anything helpful. I know that probably this sensor won't work on battery alone (Luckily the 6W solar panel i am using is linked via USB, but still telemetry won't be available during the night or in cloudy days), but at the moment i only want it to work to experiment