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Unformatted text preview: enter c hannel. In eac h row, the F, G, H, I, and J c olumns are als o elec tric ally c onnec ted. In
other words , row 1 c olumns A, B, C, D, and E are a terminal and c arry one s ignal; row 1 c olumns F, G, H, I and J are
a different terminal and c arry a different s ignal; and row 2 c olumns A, B, C, D, and E are y et another terminal and
c arry y et another different s ignal. Thes e terminal pinhole groupings are us ed to c arry "loc al s ignals " - s ignals that
may be c onnec ted to only a few other c omponents . Tips for wiring
Alway s dis c onnec t y our protoboard from the battery before c hanging any wiring on the protoboard otherwis e y ou way
ac c identally c reate a s hort that will draw more c urrent from the battery than y our c irc uit or the battery c an handle.
Try to res erve red wires for power s ignals and blac k wires ground s ignals .
Try to us e the different c olors of the wires to group s imilar ty pes of s ignals together.
Us e s horter wires when pos s ible to reduc e vis ual c lutter
Some s tudents lik e to label their wires with pos t-it tabs
Keep all tes ting and debugging c irc uitry s uc h as s witc hes and LEDs in one part of the board. Get this part of y our c irc uit
work ing c orrec tly and then leave it alone! Orient all integrated c irc uit (IC) c hips in the s ame direc tion.
If s omething is not work ing c orrec tly , y our firs t debugging s tep is to mak e s ure that all IC c hips have power and ground. No
power or ground to a c hip is the mos t c ommon mis tak e. W iring your board for power and ground
Before we wire y our board, let's tak e a moment to briefly dis c us s voltage, c urrent, and bas ic c irc uitry to help y ou better unders tand
how y our c irc uit work s . In order for a c irc uit to c onduc t elec tric ity , it mus t have an elec tric potential differenc e (or voltage) and have
a c los ed loop for c urrent to flow through. Your power s upply c reates a s upply voltage of + 5 volts as meas ured by c omparing the
differenc e in elec tric potential betw...
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- Fall '14