DIY Interactive Robot using REKA:BIT with micro:bit | Tutorial for Beginners

This awesome robot involves using servo motors, DC motors, LEDs, and a potentiometer. Other than that, the robot will help you to be familiar with most of the MicroBit sensors such as sound sensor, light sensor, and temperature sensors.

Video Tutorail

Step 1: Components and Tools

Electrical Components Required:

• 1x REKA:BIT board with MicroBit v2 (Notice we're using MicroBit v2 in order to work with its sound & touch sensors)
• 2x Servo motors attached to ice cream sticks
• 2x TT Motor + Wheel Kit
• 1x Potential Meter 10K
• 4x LED
• 4x Resistors (the resistance value can be ranged from 100Ω to 2kΩ)
• 3x Grove to female cable
• 6x Male to male wires
• Battery holder

Tools Required:

• Breadboard
• Cardboard
• Hot Glue Gun
• Scissor
• Cable ties
• Ball Universal Wheel (Castor)

Step 2: Use Cardboard to Make the Robot Body

Cut the cardboard to the dimensions shown in figure 1 Interactive Robot - A4 Template.pdf
Use the glue gun to attach the right side
Use the glue gun to attach the left side
Attach the breadboard holder as shown in figure 4
Make sure to leave a little space for the ease of wire connection

Step 3: Connection

• The first grove port of REKA:BIT will be connected to the potentiometer
• Connect LEDs to the breadboard, where: The long leg (Anode) should be connected to the output pin. The short leg (Cathode) should be connected to a resistor, and the resistor will be connected to the ground pin. After that, connect the female wires coming from the grove port to the male wires on the breadboard
• Connect both servo motors to the servo ports number 1 and 2
• Connect the DC motors to their terminals

Step 4: Attach Components to Cardboard

Insert the potentiometer in the middle
Place the breadboard over the cardboard piece
Attach servo motors
Place DC motors on the bottom sides
Attach REKA:BIT and fix it using cable ties
Insert the caster wheel into a piece of cardboard and place it at the bottom
Place the battery holder over the cardboard piece
Make the circuit connection as shown in the previous step
Attach the ice cream sticks to servo motors
Close the top side with a cardboard piece

Step 5: Code

Now, connect the MicroBit to your device and open MakeCode editor to start programming.

• Add REKA:BIT extension and follow the code block in the picture above
• After completing the code block, download it and compile it over REKA:BIT

You can also view and edit the code by clicking here!

Well Done!

Awesome! the interactive robot is ready to go.
Turn on REKA:BIT and enjoy having fun with it.

Don't forget to show your cool robot to your friends!