completed bottom deck of the PropBot with motors,
mounts, and wheels attached. Note: I’m also showing the
PropBot with the two front switches already attached.
You’ll do this part in the next installment of this series.
Mark off the holes for the PAB in the location shown in
Figure 3. Drill the three holes using a 9/64” bit. Secure the
PAB to the top deck using 4-40 screws and standoffs.
Important! If you use metal screws to hold the PAB, be
sure to add plastic washers to avoid any possible shorts. Or,
you may wish to opt for nylon screws.
To complete the PropBot, secure the top deck to the
riser standoffs using 6-32 nuts.
First Trial Run
That’s all the space we have for this first installment.
Next time, we’ll fire things up and program the Propeller for
an initial trial run.
We’ll then move on to programming the Prop to detect
obstacles, control the robot remotely, sense when it’s been
picked up or moved, and lots more. SV
Figure 9. The front and back of the
robot is leveled using skids. Adjust the
length of the skids so the robot will slightly
tip back and forth along its length.
Figure 10. Mount the battery holder over the servo motor
casings using small strips of double-sided foam tape, Velcro,
or other hook-and-loop fastener.
Figure 11. Assembly
detail for the deck risers
which consists of a 6-32 x 3"
machine screw, 6-32 nuts,
and a length of 0.25" O.D.
Figure 12. The completed bottom deck of the PropBot,
These will be detailed in an upcoming installment.
SERVO 09.2014 57