NodeMCU v0.9 A0 D0 RSV (5)D1 - SDS_TX RSV (4)D2 - SDS_RX RSV (0)D3 - BMP_SDA RSV (2)D4 - BMP_SCL RSV 3V3 - BMP_VCC RSV GND - BMP_GND GND D5 3V3 D6 - GEIGER_VIN GND D7 - DHT_DATA 3V3 D8 EN RX RST TX SDS_GND ?- GND GND SDS_5V ?- 5V 3V3 SDS011 - TXD - RXD - GND - - 5V - - DHT22 VDD -> 3V3 DATA -> D7 -> GND -> GND RadiationD GND -> GND 5V -> 5V VIN -> D6