Week 5 Objectives:
Objective A: – Attach wires and popsicle stick to DPDT switch and mount switch on robot
Objective B: – Wire DPDT switch to motor for reversing robot direction
Objective C: – Build bumper arm for automatically switching direction
1x DPDT switch
6x Male-female wire
1x Male-male wire
1x Popsicle stick w/ hole
Objective A: DPDT Wires and Popsicle Stick
First: Attach 6 male-female wires to the DPDT switch.
|1||With another wire or small screwdriver, remove the black casing from the female side of one of your M-F wires.|
|2||Use the small screwdriver to widen the bare metal head of the wire.|
|3||Push the wire onto a pin of the DPDT switch, rocking the wire back and forth as you do. It should be a little snug.|
|4||Repeat 1-3 with a new wire for each pin of the switch.|
Next: Attach the DPDT switch to the robot.
|5||Double check that none of the bare metal ends are touching – this can create a short circuit. Bend the wires a little further apart if you need to.|
|6||Use a little squeeze of hot glue on the legs of the switch to hold the wires in place. Be careful not to get any glue inside of the switch.|
|7||Fit the popsicle stick with a hole over the black slider of the DPDT switch. Carefully use hot glue to hold it in place.|
|8||Glue the switch in place so that it hangs off the side of your robot with the popsicle stick pointing front to back.|
2x Male-male wires
Already on robot:
Objective B: DPDT Circuit
Build this circuit on your breadboard.
When you are done: flipping the DPDT switch will swap positive and negative on your motor, reversing its direction.
5x Popsicle sticks
Objective C: Bumper Arm
Add a bumper arm to your robot so that it will automatically reverse direction when it drives into a wall. Start by building it off of the popsicle stick you attached to your switch earlier. The design of the arm is up to you, but it should extend all the way out past the front and back of your robot so it can push into things.
One possible arm design