• Open Stackis a standalone 4G LTE IoT connectivity board designed to run RTOS-based C applications directly on the Quectel EC200U series LTE module, meaning you don’t need an external MCU like Arduino, ESP32, or Raspberry Pi. • By removing the MCU, the board reduces power consumption, bill-of-materials (BOM) cost, and physical footprint. • The board supports multi-band LTE with GSM fallback, GNSS, and Bluetooth 4.2, as well as IPv4/IPv6 client and server modes. • It also includes a USB Type-C port, a Nano SIM card slot, LTE/GNSS/BLE antenna connectors, an OLED information display, status LEDs, control buttons, and a 40-pin Raspberry Pi HAT-compatible GPIO header. • Networking support includes TCP/UDP, SSL/TLS, HTTP/HTTPS, MQTT, LwM2M, CoAP, FTP/FTPS, and PPP, making it suitable for asset tracking, industrial monitoring, BLE-to-LTE gateways, remote infrastructure, and always-connected IoT deployments without additional controller hardware. • Open Stack specifications: Cellular Module -Quectel EC200U-CN series(EC200UCNAA-N05-SGNSA) moduleCellular Connectivity:LTE FDD - B1/B3/B5/B8LTE TDD - B34/B38/B39/B40/B41GSM - 900 / 1800 MHz (fallback)Data Rates - Up to 10 Mbps (DL) / 5 Mbps (UL)GNSS - GPS, GLONASS, Galileo, BeiDou (BDS), QZSSBluetooth - Bluetooth 4.2 (BR/EDR + BLE)Networking Protocols - TCP, UDP, SSL/TLS, HTTP/HTTPS, MQTT, LwM2M, CoAP, FTP/FTPS, PPP, IPv4, IPv6Antenna - 3x U.FL connector for LTE, GNSS, and Bluetooth Cellular Connectivity:LTE FDD - B1/B3/B5/B8LTE TDD - B34/B38/B39/B40/B41GSM - 900 / 1800 MHz (fallback) LTE FDD - B1/B3/B5/B8 LTE TDD - B34/B38/B39/B40/B41 GSM - 900 / 1800 MHz (fallback) Data Rates - Up to 10 Mbps (DL) / 5 Mbps (UL) GNSS - GPS, GLONASS, Galileo, BeiDou (BDS), QZSS Bluetooth - Bluetooth 4.2 (BR/EDR + BLE) Networking Protocols - TCP, UDP, SSL/TLS, HTTP/HTTPS, MQTT, LwM2M, CoAP, FTP/FTPS, PPP, IPv4, IPv6 Antenna - 3x U.FL connector for LTE, GNSS, and Bluetooth Display - 128×32 thin OLED display USB - 1x USB Type-C for power, programming, and debug
Article Summaries:
- Open Stack is a standalone 4G LTE IoT connectivity board designed to run RTOS-based C applications directly on the Quectel EC200U series LTE module, meaning you don’t need an external MCU like Arduino, ESP32, or Raspberry Pi. By removing the MCU, the board reduces power consumption, bill-of-materials (BOM) cost, and physical footprint. The board supports multi-band LTE with GSM fallback, GNSS, and Bluetooth 4.2, as well as IPv4/IPv6 client and server modes. It also includes a USB Type-C port, a Nano SIM card slot, LTE/GNSS/BLE antenna connectors, an OLED information display, status LEDs, contr
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