Getting Started
Last revision 2026/01/12
Requirements
-
Hardware
- A9G Module
- USB to TTL Module
-
Software
-
SIM Card
This module adopts Micro SIM card.
Connection Diagram
The module adopts AT firmware. It can be debugged on a computer by connecting to USB-TTL via 4 wires. The wiring correspondence is as follows:
| Module Side | Pin Name | USB-TTL Side | Pin Name |
|---|---|---|---|
| Module | VUSB | USB-TTL | 5V |
| Module | GND | USB-TTL | GND |
| Module | TX1 | USB-TTL | RX |
| Module | RX1 | USB-TTL | TX |
Ensure the power supply voltage matches (5V for VUSB), and the TX/RX pins are cross-connected (module TX1 to USB-TTL RX, module RX1 to USB-TTL TX) to ensure normal communication.
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