BCU/2 board

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The BCU/2 board is a small board to control and monitor the operation of two development boards. It is Open Source (both software and hardware).

The central "brain" of the board is a teensy3 micro-computer, which fits onto the board and provides the USB connection to the host.

Host interface

The connection to host is USB, and channels are provided for power control, power measurement, switch control, i2c, gpio, and serial port.

power monitoring

You can run a "monitor" command, which will report voltage, current, and power every second, e.g.:

 Vbus (mV)      Vshunt (uV)             P (mW)                  I (mA)
------------- ----------------- ------------------------- ---------------------
A:  5084 ( 1749)  16.960 (410.001)   862 (  297    67    20)  169 (3900 5780 6277)
B:  5064 ( 1461)  33.570 (474.480)  1700 (  477   107    34)  336 (4492 6049 6383)
A:  5080 ( 2015)  19.040 (378.693)   966 (  350    81    25)  191 (3602 5687 6244)
B:  5068 ( 1749)  32.730 (439.105)  1658 (  571   132    42)  328 (4158 5954 6350)
A:  5084 ( 2260)  16.890 (349.720)   858 (  390    93    29)  168 (3327 5595 6211)
B:  5060 ( 2014)  34.080 (406.671)  1724 (  663   158    51)  341 (3852 5860 6317)

The items in parenthesis are rolling averages.