M.2 Cellular Adapter

ACTIVE

A breakout board for laptop style M.2 cellular modules, intended to be used in UAVs or similar systems.

Latest Version (V2)

Warning! Ensure bolt heads have sufficient clearance to bottom of installed M.2 module. Standard socket head cap screws do not fit in the two lower bolt holes. Use low profile or button head fasteners.

Features:

• Tested with AirPrime EM7455 and Telit LE910Cx based LTE modules (others may be compatible)

• USB 2.0 connectivity through either:

  • USB-C

  • JST-GH

• Dual physical SIM (only single SIM1 tested so far)

• 30.5mm x 30.5mm M3 mounting holes

• at least 60 Mbps download and 25mbps upload tested

Note: Default SIM detect configuration is SIM1 'open' and SIM2 'closed' (bridged jumper). Depending on the LTE module, the expected SIM detect state may be inverted.

To do:

• Test SIM slot 2 functionality

• Add USB breakout pads

• Add USB 3.0 support

• SIM detects

• Add diode (maybe LM66200) to separate USB and JST-GH 5V inputs.

Version History

V2

Latest version.

V1

Initial version. Mostly the same as V2 but longer form factor, with a single SIM slot and pads instead of JST-GH connector.