- 1 PICAXE programming board
- 2' of 7/64" metal dowel
- 1 1'x1' black plastic sheet
- 2 servo motors
- 1 9V battery
- hot glue
- 2 wheels (I used these wheels from Polulu)
Obviously, you can substitute most of these: plastic can easily be substituted for cardboard and the servos could be DC motors as well (although the robot wouldn't turn) -- etc.
A 3D CAD rendering of the pictured robot is available here!
Note: although the pictured robot includes gears, they are a little beyond the scope of this discussion and therefore are excluded from the guide.
Let's get started!
Step 1: Preparation
Cut two plastic sections: one 6"x3" and one 4" by 3". bend the 6" piece so that it's one 2"x3" and one 4"x3" piece (still stuck together).
Glue servo motors to the underside of the angle on the bent piece.
Step 2: It Comes Together...
Cut two more 4"x2" plastic sheets and glue one to each side.
Tape across the bottom inch of the hole (this way, the board won't slide out when you place it inside!).
Step 3: Vroom...
While you're at it, tape your PICAXE board to the top of the bot. Stick the 9V in the "cargo" area (with the motors).
Step 4: Programming!
servo 6, 75
servo 7, 225
pause 5000 'go forward for 5 seconds
servo 6, 225
pause 500 'turn around
NOTE: If this makes your robot go backwards, switch wherever it says 225 to 75 (and vice versa).