Hello All, After my previous post: http://forum.arduino.cc/index.php?topic=230415.msg1663180#msg1663180 I settled on a large 4" 7 segment LED display and a TCIP6B595 shift register. The 4" 7 segment is from Mouser, item# 604-SA40-19SRWA: [image] SA40-19SRWA Kingbright | Mouser SA40-19…

TPIC6B595 & 4" 7 Segment Wiring

system April 15, 2014, 4:50am 4

So which of the 12V wires coming from the 12V power source is the GND ?

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