based on chip SIM7080G-dat
Hardware
- Simplified Connection: TXD / RXD / GND / VIN
- VIN: 4.2-18Vin
- default TXD / RXD logic at 3.3V
- Boot: hold down boot button for 2 seconds, or pull key pin to up for 2 seconds
- on board netlight led and power led
- manual reset module button
Wiring
- VIN to 5~16 VDC
- GND to GND
- TXD - TXD
- RXD - RXD
- Logic_Power (L_P) to external 5V or NC if use internal 3V3
Optionally:
- BAT to directly battery power supply
- Pen turn on board power on or off via enabling DC-DC regulator
- ON: turn on/off the M2M module
jumpers
- PWR jumper: select ON/OFF for the power LED
- 3/5 jumper: select on board 3.3V or external logic/USB_5V power
-
5V jumper: 5V to external logic power pin
- M2M-interface
Use Guide
boot the module
- hold down the top-middle small button for 2 seconds to boot the module
- or pull the "boot" pin to high for 2 seconds to boot the module
Use GNSS
- check at SIMCOM-AT-GNSS
Use as a Modem and COM PORT
- power via USB
test default
- USB-TTL cable CH340/PL2303TA
- 5V/GND/TXD/RXD works with internal 3.3V logic left
Demos
- Test with ESP32: https://twitter.com/electro_phoenix/status/1635565366595428352