PCB design for animal cage monitoring and control.

* GitHub:  https://github.com/KremerMichael/chen-lab-PCB
* Schematics: 
 * http://ohm.bu.edu/~hazen/ChenLab/CageBoard_RevA_schematic.pdf
 * http://ohm.bu.edu/~hazen/ChenLab/CageBoard_RevB_schematic.pdf

Rev A is a Git tag: [https://github.com/KremerMichael/chen-lab-PCB/releases/tag/RevA RevA]

Additions for Rev B:

* Add two new solenoid driver circuits (J5, J11 outputs)
* Change most parts to thru-hole
* Add indicator LEDs
* Add new 3-terminal connections for Lick Sensor and Beam break (J16, J17, J18)

Note that RevA is a tag in git.

This is a carrier for a NI [https://www.ni.com/en-us/support/model.usb-6501.html USB-6501] module.
We should use the "OEM" flavor which has a ribbon connector already mounted.

Off on an adventure to try to get the software working under Linux. See [[ComediDebugging]] for more info.