English
The 4G GPS ESP32-C3 TDM2421 Development Board uses the Quectel EG800K module, supporting 4G LTE CAT 1 and GPS, offering users flexibility in applications requiring high-speed internet and positioning. It serves as a modern replacement for outdated 2G-band boards.
This kit features a compact, integrated design that is simple, user-friendly, and cost-effective — making it a perfect choice for developers.
With the ESP32-C3 microcontroller onboard, it enables easy development of location-based and network communication applications using Arduino and ESP platforms.
Additional I/O expansion pins from the ESP32-C3 allow seamless integration of external peripherals to complete your application.
📋 Technical Specifications
- Microcontroller: ESP32C3FH4 with Wi-Fi and Bluetooth support
- GPS + 4G LTE Cat 1 Module: EG800K (supports GPS, 4G data, SMS; does not support voice calls)
- Low power consumption
- Operating voltage: 5–12 VDC
- USB Type-C port for power and programming
- Convenient Open-Lock SIM tray
- Integrated network status LED
- Dimensions: 47 × 30 mm
🔗 Recommended GPS antenna for fast and reliable signal acquisition:
Internal pin mapping between ESP32-C3 and EG800K module:
| ESP32-C3 Pin | EG800K Function |
|---|---|
| IO0 | SIM DTR |
| IO2 | SIM Power ON/OFF (LOW = OFF) |
| TXD | SIM RX |
| RXD | SIM TX |
| IO10 | Onboard LED |
| IO9 | Boot/User Button |
