legacy wiki page
- https://www.electrodragon.com/w/SIM868_Debug
- https://www.electrodragon.com/w/SIM868
Pin Definitions
- TXD
- RXD
- RTC
- GND
- BAT -> direct power supply 4.2V
- KEY
Antenna Ports
- BT
- GSM
- GPS
Usage:
- Test can work directly with arduino, use guide please see wiki page.
- For long term use, for example arduino, simply add extra diode (shipment included) if use 5V power supply.
- Please look for our "SIM868 Debug" wiki page if you encouter GNSS read problem.
Quick Setup
| Functions | Setup and Pins |
|---|---|
| power supply | direct 4.2V VBAT |
| serial communication | TXD / RXD |
| logic shifter level | None |
| serial baudrate | 9600 |
| network | 2G/GPRS |
| location | GPS |
| boot mode | press-button / mcu-trigger |
Note
R1.1 version slightly optimize board layout, all antenna connectors on same side.