Air724_Phone_Core

## Product introduction:

Hezhou Air724 Cat1 phone core board is based on the Air724 module, supports secondary phone development, has an onboard SIM card holder, and a 4G antenna. It is currently the smallest full-featured cat1 core board with an onboard antenna.

## Circuit parameters:

The working voltage is USB 5V power supply or external 5V pin power supply.

Supports SSD1306, ST7735, IL9341, ST7789 and other displays, supports standard I2C, SPI bus, supports two ADCs, and supports amplifier-free output for microphones and speakers.

Three serial port outputs, UART1 and 2 are 1.8V level and compatible with 3.3V level. UART3 is 4V level and compatible with 3.3V and 5V levels.

Dimensions:

Full size (including onboard antenna and USB debugging tail plug) 74mmx35mmX6mm (length x width x height)

Core size (excluding antenna and USB debugging tail plug) 45mmX35mmx6mm (length X width X height)

supply:

Open source materials such as schematics, PCB assembly drawings, and original engineering design documents of the development board design process

## Software parameters:

1) Support the latest official DEMO of Hezhou Luat

2) Support iRTU firmware

3) Provide open source phone source files

4) Provide a very simplified phone board-specific demo

Finished product purchase address:

https://item.taobao.com/item.htm?spm=a230r.1.14.54.393e2cfeuCTHTL&id=624610770134&ns=1&abbucket=8#detail