SPECIFICATIONS

Brand Name: NONE

Condition: New

High-concerned chemical: none

Origin: Mainland China

Package: SMD

Type: Module

Development Board Introduction:

Ÿ A9G development board is a multifunctional development board based on Assunco A9G GPRS/GSM+GPS/BDS module, which can be used to verify the basic communication function and peripheral function of A9G module.

Ÿ The A9G board is equipped with basic phone/text messaging, GPRS networking communication, and GPS/BDS dual-mode positioning functions.

Ÿ A9G development board on-board Li-ion battery charge management, microphone, speaker interface, USB communication interface, multiple user buttons/led, TF card slot, accelerometer, SPI interface, I2C2 interface, ADC interface.

Ÿ A9G development board camera expansion board, external 30W/200W camera.

Ÿ A9G development board coin-operated machine expansion board, can be externally connected to traditional coin-operated machines.

Based on the above features, A9G can be used for a variety of peripheral prototyping verification:

Ÿ Vehicle immobiliser using GPRS+GPS, and accelerometer.

Ÿ Remote listening intercom using GSM and microphone/speaker.

Ÿ Smartwatch using GPRS/GSM+GPS with 1.54" capacitive touch screen.

Ÿ Elderly monitoring watch using GPRS/GSM+GPS, heart rate oximetry sensor, 1.54" capacitive touch screen

Ÿ Remote monitoring camera using GPRS+TF+camera expansion boards

Ÿ WeChat payment coin-operated machine solution using coin-operated machine expansion boards

Ÿ Customised device based on lua programming using on-board functionality

Basic debugging:

Wiring

Development board using AT firmware, use 4 wires to connect usb-ttl when debugging, connect to the computer to debug: VUSB → 5V; GND → GND; AT_TX → RX; AT_RX → TX; or use USB power supply, and then connect to the computer to debug.

Or use USB power supply, and then connect three other lines GND→GND; AT_TX→RX; AT_RX→TX; or lithium battery power supply.

Or lithium battery power supply VBAT→(3.3v-4.2)V; GND→GND; AT_TX→RX; AT_RX→TX; (using VBAT power supply, need to press and hold down the power_key button for about 2s)

Power on

1. A9G board can be powered by Li-ion battery or USB. 2.

2. 1~2S after power on the module automatically run, this time the serial port will automatically output information. The whole process of powering up to the normal operation of the board does not require any operation. 3.

3. Press Rst_Key to reset the module. 4.

4. The module enters AT command mode by default.