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WSAL20268 – Pico-SIM868-GSM – GPRS – GNSS/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

Technical overview of the Waveshare Pico-SIM868 module for Raspberry Pi Pico: GSM, GPRS, GNSS and Bluetooth capabilities, AT commands, Python examples, and power-supply notes.

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Technical overview

  • The module supports SMS, phone calls, GPRS, DTMF, HTTP, FTP, MMS, and email.
  • Bluetooth 3.0 enables Bluetooth data transfer.
  • An integrated 3.7 V Li-Po battery connector allows external power or recharging via USB.
  • Two LEDs indicate module operating status.
  • The nano-SIM card slot supports 2G SIM cards, depending on the local network provider.
  • Communication uses UART with serial AT commands.
  • GNSS supports GPS, GLONASS, and BeiDou; positioning requires a clear view of the sky.
  • A speaker must be connected to hear audio during phone calls.
  • Dimensions: 76.15 × 24.00 mm; logic level 3.3 V.

Commands and examples – verify before use:  

AT+CSQ
AT+CREG?
AT+CGATT?
AT+CSTT="CMNET"
AT+CIICR
AT+CIFSR
AT+CIPSTART="TCP","120.79.2.0","2317"
AT+CIPSEND

Notes and version constraints

  • AT commands are version-sensitive; exact parameters may vary by firmware.
  • GPS positioning does not work on rainy days or without a clear view of the sky.
  • SIM card compatibility depends on the local network provider; verify before purchase.
  • Power switching between USB and Li-Po battery requires manual switch operation.
  • The pin header on the module must be soldered before use.
  • Older Thonny versions may lack the Pico support package; an update is required.

Source and revision record

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