S
TEP
9: P
UMMER
TEST
!
Time to see how good your soldering is!
Hopefully your batteries will have some charge. If not, charge’em up, or
use a pair of AAA cells (borrowed from a remote control), and stick them
into the AAA cell holder.
Insert the battery holder from the underside (opposite side to where you’ve
done all your work so far), and give it a bit of a bend so the leads make a
secure contact with the PCB. If all is well, you should see your 4 LEDs
jumping to life in a pleasant, pummer-ish manner...
Step 9a: Put fresh batteries in the holder,
and insert it from the bottom. These holes
are labeled “Batt” on the top of the PCB.
Step 9b: Tilt the board to the battery
holder pins so that they are for sure
making contact.
Step 9c: Inspect your handiwork!
You should see 4 blinky lights!
If you don’t see blinky lights, check:
!
Batteries charged?
!
Chip in right-way around?
!
LEDs in right-way around?
There’s not much else that can go
wrong, so if nothing else, re-touch up
your soldering!
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