BCR PORT

Pinout

Pin#	Signal
1
2	DATA	Input, 5v TTL, 0-5vdc
3
4
5	GND*	N/C on TANDY 102, GND on Model 100, NEC PC-8201A & PC-8300
6
7	GND
8
9	VCC	+5vdc power output. Crashes machine if you draw more than 60-70ma.
Shell		Plastic shell, N/C

BCR-to-USB power tap

https://github.com/bkw777/BCR_Breakout

Compatible Readers

Wand
Hewlett Packard HEDS-3000 HEDS-3050
Unitech MS100-NTCB00-SG (previously MS100A) MS120-NTCB00-SG (previously MS120A)

Slot
Unitech MS146-ITCB00-SG (previously MS146A)

info

http://www.mh-aerotools.de/hp/bc-reader/index.htm
The pdf contains a full schematic of a wand.