• Note the default version is the data ONLY version
  • the module information - ec20-dat

legecy wiki page

  • https://www.electrodragon.com/w/Modem#WIN_10

Board Map

  • short JP6 two-pins to enter auto boot mode

Quick Start:

  • Connect USB Debug cable
  • Short connect “Auto boot” and “boot” pin 2-3 seconds to auto boot up the board. (A tweezer can work fine)
  • LED started to blink.
  • Start to install driver, which needed on WIN10, avaialble in our git.
  • Find USB AT commands port, can control it now, auto baudrate can use any you like.

Logic level selector

  • 5V or 3.3V
  • also can float it, it works fine

USB Debug

  • plugin to have three serial port

LED Indicators

  • Status
  • Network_status
  • Net_mode

Antenna Connector

  • RF
  • GPS
  • Ant_Div

Pin headers

  • Top
  • Bottom

boot log

test with AT+CPIN?

RDY

+CFUN: 1

+CPIN: READY

+QUSIM: 1

+QIND: SMS DONE
AT+CPIN?
+CPIN: READY

OK

Demo

Code

  • https://github.com/Edragon/quectel_4g

ref