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Specifications change right up until the first production run. At the moment this is what the PiTalk module looks like technically:

  • Description:

    The PiTalk is based on the UC15 UMTS/HSDPA module with a maximum data rate of 3.6Mbps downlink and 384Kbps uplink. It uses GPIO14 and GPIO15 of the Raspberry Pi for serial communication. USB support is also available for communication to avoid the use of the GPIO and USB drivers are available for Windows Linux and Android.

    • A Micro-SIM is required for PiTalk connection to telecomm network.
    • Onboard SMA Antenna
  • Power:

    • Supply Voltage: 3.3V to 4.3V
    • Onboard USB for power
    • PowerKey button available for ON/OFF powering of the module. Alternatively the code library provides soft functions.
  • Typical Supply Voltage: 3.8V

    It is recommended to use at least 1A supply and during high data transmission 2A is required.

    • Do not power PiTalk using USB of laptop/desktop. Use only 5v-2A adaptor.
    • PiTalk and Raspberry Pi can be powered using a single adaptor or powered separately (using jumper)
  • Indicators: Three LED indicators are available on PiTalk

    • Power: Power Indicator
    • Status: Indication of Power On/Off status
    • Netlight: Indication of Network activity status
  • Location:

    • Support for location tracking.
  • Audio: Two Ports avaialable

    • Audio Jack: 3.5mm jack is used for PiTalk voice communication
    • Mic and Speaker: Mic and Speaker interface is also available
  • Library Support:

    • GUI: Full GUI support for Call/MSG/Internet/Audio/Camera etc. Additional support for 3.2” LCD and 5” LCD in both Horizontal and Vertical orientations.
    • Python Library: API for communications.
    • Shell Commands: Terminal can be used for messaging, emails etc.