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WSAL20036 – Pico-SIM7080G-Cat-M – NB-IoT/en

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Documentation notice: This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

Summary

The Pico-SIM7080G is an NB-IoT/Cat-M/GNSS module for the Raspberry Pi Pico. It supports global frequency bands, AT commands over UART, and HTTP/MQTT as well as GNSS positioning.

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Technical overview

  • Connects via standard Pico header; UART communication with serial AT commands.
  • Supported protocols: TCP/UDP/HTTP/HTTPS/TLS/DTLS/PING/LWM2M/COAP/MQTT.
  • GNSS systems: GPS, GLONASS, BeiDou, Galileo.
  • NB-IoT data rates: 136 Kbps (DL) / 150 Kbps (UL).
  • Cat-M data rates: 589 Kbps (DL) / 1119 Kbps (UL).
  • Power: external LiPo battery or Pico USB port; battery interface 3.7–4.2 V.
  • Logic level: 3.3 V.
  • Two LEDs: NET (network status) and Charge (charging status).
  • SIM slot accepts only 1.8 V SIM cards; 3 V cards are not supported.

Commands and examples – verify before use:  

AT+CMNB=2 // Fix NB-IoT mode
AT+CMNB=1 // Fix Cat-M mode
AT+CNMP=38 // Fixed LTE mode for faster network registration
AT+CPSMS=1 // Enable PSM low-power mode
AT+CPSMS=0 // Disable PSM mode

Notes and version constraints

  • Simultaneous use of cellular network and GPS positioning is not possible according to the source.
  • If there is no signal: fixing the mode (NB-IoT or Cat-M) makes registration easier.
  • Communication failures may be caused by poor hardware contact; certain solder points must be soldered, especially 3.3 V.
  • The AT commands listed come from the AT manual; parameters may differ across firmware versions – verify before deployment.
  • No information on prices, stock, certifications, or warranty was provided in the source material.

Source and revision record

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