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Source at github

This is the power-management block of Manuvr’s motion-capture glove. It has been broken out as a module for testing and re-use.

Intended usage

A software-mediated single-cell li-ion battery manager for cases needing bursts of a few watts and supporting long periods of quiescent standby.

Features

• Fused battery
• Charger and fuel gauge are both i2c
• Secondary regulator has three voltages (0, 2.5, 3.3), and can be changed dynamically.
• Integrated 4-bit level-shifter (i2c capable)
• 2.54 headers
• Single-sided assembly for easy thermal-relief

Primary components

Constraints

• Battery must be li-ion chemistry.
• Primary regulator is always on and fixed at a 3.3v output.
• No single regulator may provide more than 1.8A, and the module’s maximum output wattage is 4.2 watts. See below.

Charge and discharge rate on the battery must not exceed 1A, or the internal sense resistor in the fuel gauge will burn out. There is a resetable fuse to prevent damage, but this forms the limit on the module’s practical output rating. However, the charger IC can handle up to a 20v input, and could conceivably draw more than the module’s maximum output from the input source as it charges and powers the load. Fuse accordingly. :-)

Source at github

Provides a breakout to the compute/comm PCB connector on the r2-Backplane. It is also useful as a template for a custom Compute PCB.

Intended usage

This project has two purposes:

1) To be used as-is as a signal breakout for using Digitabulum and the r2-Backplane with a new microcontroller without rolling a PCB for it.

2) To be used as a template for a custom compute PCB to be attached to the r2-Backplane.

Source at github

This is a breadboard adapter for Digitabulum-r2. All signals are broken out and labeled.

Intended usage

This project has two purposes:

1) To be used as-is as a breadboard adapter and development tool.

2) To be used as a template for a custom Digitabulum backplane.

Features

• JTAG breakout
• 2.54 headers