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External hardware

GPS modules

UBLOX GPS module
T-LORA T3_V1.6 GPS connection

Attention regarding the supply voltage: Only 3.3V GPS modules may be used.

  • GPS6MV2 HW-248 - UBLOX NEO-6M-0-001
    • Connections GND, VCC, TX, RX
      • HELTEC-V2
        • RX <- Pin 23  (TX am Modul)
        • TX -> Pin 3 (RX on the module)
      • HELTEC-V3
        • RX <- Pin 37 (TX am Modul)
        • TX -> Pin 36 (RX on the module)
      • ESP32-E22
        • RX <- Pin 17 (TX am Modul)
        • TX -> Pin 16 (RX on the module)
      • TLORA T3_V1.6.1
        • RX <- Pin 13 (TX am Modul)
        • TX <- Pin 15 (RX am Modul)

User Button

T-LORA - external button
T-LORA - external button
  • Connect TASTER against GND
    • Connection
      • TBEAM - already present - middle button on the board
        • Pin 38
      •  HELTEC-V2 - already existing - PGM push button
        • Pin 0
      • HELTEC-V3 - already existing - PGM push button
        • Pin 0
      • ESP32-E22
        • Pin 12
      • TLORA T3_V1.6.1
        • Pin 12

BMP/BME280 sensor

  • Connect sensor to I2C bus (use PINs like OLED)
    • Supported are the ESP32 modules
      • TBEAM, HELTEC-V2, HELTEC-V3, SP32-E2, TLORA T3_V1.6.1
        • I2C pins, attention at 3.3V terminate the VDD
    • The respective sensor must be connected to
      • --bmp on
      • --bme on
    • be activated. Do not forget to reboot.
      • --bmx off switches off the use completely
    • The data can be transferred via serial console or APP with
      • --weather
      • --wx
      • are queried
  • --wxdebug on provides additional information via the serial console as installation help

Onewire temperature sensor

  • Connect sensor to Onewire GPIO pin. The pin is connected to the Command
  • --onewire gpio 99  to set.
    • All ESP32 and RAK modules are supported
      • Onewire Data-PIN with 4k7 resistor against 3.3V high voltage.
    • The sensor is connected to
      • --onewire on enabled.
      • --onewire off deactivated.
    • The data can be transferred via serial console or APP with
      • --weather or
      • --wx
      • can be queried.
  • --wxdebug on provides additional information via the serial console as installation help
  • Tested GPIO pins
    • T-LORA T3_V1.6.1 GPIO 25
    • HELTEC_V2 GPIO 17