Librem 5 Development Kit

Note

If you experience problems with the development kit, you may find it useful to consult the Known Issues page and Troubleshooting guide.

Development Kit Package

The package contains:

  • Receipts

  • An informational leaflet

  • A 5V @ 3A USB power supply with a USB-A (non-SS) socket

  • A cable with a USB-A (non-SS) plug on one side and a USB-C plug on the other

  • The dev board, composed of the following detachable parts:

    • The base board, AKA Librem 5 Dev Kit v1.0.0

    • The SIM7100E modem in the Europe version, SIM7100A in the US version, with an antenna cable attached – see Modems for details

    • The EmCraft SoM with a Quad iMX8M

    • A camera module marked TRULY-M (covered with a paper protector)

    • The RedPine Signals WiFi/BT module with 2 antenna cables attached

The development board accepts the following items, not included in the package:

  • a MicroSD card

  • a Micro/3FF SIM card (15×12mm)

  • a Mini/2FF GPG smart card (25x15mm)

  • a protected 18650 Li-ion battery that meets the specs on the silkscreen

    • Built-in over-voltage, under-voltage, over-current, and over/under-temperature protection

    • minimum cell voltage of 2.5V or less

    • maximum cell voltage of 4.2V or more

    • maximum discharge current of 8A or more

    • maximum charge current of 1.6A or more

Warning

If a battery is used with the board, it must be inserted in the battery holder instead of being connected indirectly via adaptors or jumper wires. Use of the battery holder ensures that thermal regulation can be used as an additional precaution against overheating.
The polarity marking must be followed when inserting the battery otherwise there is a risk of damaging the board and/or the 18650 cell.

Notably, the development board has an Ethernet port, a single USB-C port, and a Mini-HDMI port.

Ports, right hand side, top to bottom: 3.5mm audio socket, RJ45 Ethernet socket, mini HDMI socket, USB C socket, micro SD card socket. Kill switch side, left to right: reset button, boot mode switch, camera + microphone kill switch, cellular kill switch, Wi-Fi kill switch. Button side, right to left: smart card socket, volume down button, volume up button, power button, micro SIM card socket.

The positions and types of sockets, push buttons and switches (click to enlarge). Ports, right hand side, top to bottom: 3.5mm audio socket (see Audio), RJ45 Ethernet socket, mini HDMI socket (see Display), USB C socket (see USB), micro SD card socket (see Micro SD Card). Kill switch side, right to left: reset button, boot mode switch, camera + microphone kill switch, cellular kill switch, Wi-Fi kill switch. Button side, right to left: smart card socket (see Smart Card), volume down button, volume up button, power button (see Push Buttons), micro SIM card socket (see Micro SIM Card).

See Hardware Reference for information about the specific parts used for the sockets, buttons and switches.

Setting up the Board

In its original factory state, the board is lacking some essential features. We recommend that you consider Flashing the System Image before using the board for development.

It may also be useful to consult the Known Issues page and Troubleshooting guide if problems occur.

Booting for the First Time

Flip the boot switch back to eMMC position and press the reboot button. The output of the lsusb command should show a multifunction gadget, like this:

Bus 003 Device 068: ID 1d6b:0104 Linux Foundation Multifunction Composite Gadget

The serial console should appear at /dev/ttyACM0. You should be able to log in as the user purism with the password 123456.

The board should also be available as a USB network device – see the Ethernet over USB guide for setup instructions.

As usual, don’t hesitate to get in touch if you find yourself stuck.

Next Steps

See the How To Guides page for a collection of guides covering common tasks and use cases for the development board.

Look at the Workstation section to find instructions for setting up your workstation for application development

Go to the Application Development chapter to get started with the tools and frameworks for building applications.