Documentation

Step 15 - Mounting the Tail Spring Ring:
Lay your new ring over the tail spring so the spring is in the middle. You’re doing this so you can see
where to bend the wire 90° downward so that it goes into the pad just beside the tail spring.
After you make the bend, insert
the wire into the hole so the ring
stands about 9mm (3/8”) above
the PCB, solder it in, and clip it
off so there’s 6mm (1/4”) left
underneath (for adjusting).
If you’re out of Oreos to bribe
your helper, use some masking
tape to hold it at the right height
while you solder it in.
15A: Lay ring over spring, and note
where you have to fold the wire down to
meet the solder pad
15B: Use masking tape
to hold the wire at the
9mm (3/8”) while you
solder it in.
9mm
(3/8”)
Step 16 - Preparing the Motors:
Slide the black rubber tires onto the white plastic hubs on your motors. Don’t push them up too far -
rubbing is bad! Find your square of double-sided sticky tape (”DSST”) and half and quarter it.
STOP! WAIT! Don’t do ANYTHING until you read this first: Wipe the motors off with alcohol or
window cleaner - it makes the DSST stick much better.
Put the motors down in front of you so the white spots are nearest to each other. Put the DSST on the flat
part, up near the rear of the motor. Get this part wrong, and your Herbie will love spinning in circles!
16A: Slide the rubber tire onto the
motor’s white hub
White spots
close!
Tape on
clean motor
surface!
16B: DSST stuck on the motors
16C:Solder on wire clippings
10
Peel the backing off one side of the DSST and push it onto one motor hard. Before you do it on the
other motor, make sure that with the white dots side-by-side the DSST is on the upper surface of both
motors. Then take your clippings, and solder them straight-up on each of the motor posts
Solarbotics Herbie the Mousebot