Wiring

Wire up your breadboards as per the diagrams below.

Note that the BME280 sensor and GPS modules depicted below maybe different than what you have. They should have the same pins, but maybe in different locations!

Heltec ESP32 Lora v2 + BME280

Fritzing file:

Heltec ESP32 Lora v2 + BME280 + Optional GPS

Fritzing file:

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