Introduction: Micro:Bot Assembling (EHMS)
I have made a Micro:Bot that can be coded to drive to places or do fun tricks.
Supplies
Bottom Chassis Plate, Top Chassis Plate, Front Motor Mount, Rear Motor Mount, Side Strut, Encoder Mount, moto:bit Mount, Battery Pack Clip, Line Follower Mount, Line Follower Mount Plate, Jumper Wire — 3-pin, 6", Wheels, Nub Caster, DC Motors, Line Follower Boards, 4xAA Battery Holder, and 4xAA Batteries (Not Included).
Step 1: Attach Rear Motor Mounts
- Hold on the wires in the center of the motor. Slide on the Rear Motor Mount (D) on to the motor and make sure that you don't break the wires.
- Do this process again to another motor.
Step 2: Attach the Front Motor Mounts
Now we want to put the Front Motor Mount on the motor. Make sure both round sides are facing up and they face opposite sides.
- Attach the Front Motor Mount onto the eyelet on the front motor.
- Do this again to another motor.
Step 3: Attach the Motor Assemblies to the Chassis
Now that your motors are made. Put those motors onto the Bottom Chassis Plate (A). Make sure the round parts are facing towards each other.
Step 4: Attach the Wheels
Now add the two wheels, connecting onto the motors.
Step 5: Installing the Line Sensors
We now will attach the Line Sensors. Attach the three Line Follower Boards (O) onto the Line Follower Mount (I).
- Make sure they are all facing up as their holes are connected with rectangular pegs.
- Put the Line Follower Mount Plate (J) is now on top of the Line Follower Mount (I).
- You should see the center clip mount poking out the Line Follower Mount Plate (J).
Step 6: Attach the Cables and the Line Follower Assembly to the Chassis
Let us plug the wires now and attach it onto the Chassis.
- Red wires should connect to GND, Orange wires to VCC, and Yellow wires to OUT.
- Attach the 3 cables to the 3 Line Follower Boards.
- Then at the rectangular slot near the front of the chassis, attach the Line Follower to there.
- Route the cables through the large hole in the bottom of the plate.
When you flip your robot on top of it's wheels, the line sensors should be facing down.
Step 7: Final Assembly
- Snap the Nub Caster (M) into the slot on the back of the Bottom Chassis Plate assembly. Make sure the Nub Caster is on the same side with the motors (the bottom side).
- Snap the four Side Struts (E) into the diagonal slots on the four corners of the Bottom Chassis Plate assembly.
- Then pull the cables through the cutouts on the chassis.
Step 8: Route the Cables
Make sure that the front sides of each plate line up.
Route the wires and cables through the left and right oval slots in the Top Chassis Plate assembly as shown. For the center line follower sensor, route this cable through the left oval slot.
The Left Line Follower and Center Line Follower should be on the Left, the Right Line Follower should be at the Right, Left Motor Wires (red and black) on the Left , and Right Motor Wires (red and black) on the Right.
It should look like the image.
Step 9: Attach Top Chassis Plate Assembly
Now you may put the Top Chassis Plate assembly onto the side struts and motor mounts. After you put the Top Chassis Plate assembly on, we want to attach a micro: bit onto it. So, let's put our two moto:bit mounts (G) into the vertical slots in the back of the top chassis plate near the large rectangular opening.
Step 10: Add the Moto:bit
Let snap in the moto:bit board, first insert your micro:bit into the moto:bit board. The moto:bit snaps into the lowest of the notches on the moto:bit Mounts (G). Make sure the power jack is facing the left side of the robot. Put it in gently and evenly until it snaps into place.
Your setup should be looking like the picture with wires sticking out.
Step 11: Connecting the Cables
We must connect the wires into the micro bit: for it to connect the code. Use the image for reference so you know where to put the wires at in the micro bit:.
Step 12: Attach Battery Pack
We are going to need some batteries for this robot to work. Put four AA batteries into the Battery Holder (P). Insert the Battery Pack Clip (H) on top of the battery pack. Twist and position the clip so that it rests on top of the battery pack. Put the clip down into the vertical slots in the Bottom Chassis Plate so it snaps in place. And don't forget to plug in the barrel jack cable into the barrel connector on the side of the moto:bit carrier board!
Step 13: Coding the Micro Bit:
You'll need two micro bits for this. Go into Makecode and make this radio code for one of your microbits. This will be your controller as you use the micro bit. The second, your going want to make for your other micro bit. That will be the one inside of your bot's micro bit board to connect it to the radio. When everything is connected. Make sure your motors are on and your micro bot should be controllable now! :)