Week 5

Walking Robot

Ideation

INSPIRATION

This week we want to make an electronic device controlled by an ON/OFF switch and make at least two actions

So this was my inspiration, i wanted to make a walking robot with one DC motor.

And it's a challenge to use one DC motor in a robot, so let's see how i did it.😄

softwares we use

We are always going to use TINKERCAD software to design our circuits and simulate them to make sure everything is working well and also to avoid making short circuits and burning our electronics.

Electronics we will use

220 ohm Resistors

Geared DC motor

ON/OFF Switch

(RED, GREEN, YELLOW) LEDs

Breadboard

5V Adapter

Jumper Wires

Crafting tools

Gluegun and glue sticks

Cardboard

Scissors

Sticks

Designing the circuit on tinkercad

First when you open tinkercad press on Designs and then choose Circuit to start design the circuit and simulate it before connecting it in reality.

Now from the basic componenets on the right side choose the componenets we're going to use :

1- Breadboard 2- Geared DC motor (output component)

3- Three yellow LEDs (output component) 4- One red LED (output component)

5- Two green LEDs (output component) 6- Six resistors of 22o ohm 7- 5V power supply (we chose 5V power source because the outputs componenets ( the Dc motor takes 5V to perform well and also every LED takes 2-3V to work well) 8- ON/OFF Switch (input component) used to open and close the circuit

Now lets see the connection of the circuit:

1- First of all lets connect the battery to the breadboard (+Ve) to Positive of the breadboard and (-Ve) to the Negative of the breadboard.

2- Connect all the negatives of all the LEDs on the negative of the battery on breadboard.

3- Connect one resistor to every positive of the LEDs from one leg and the other leg of the resistor to the positive of the battery on breadboard (as shown in the photo).

4- Connect the DC motor to the positive and negative of the battery on breadboard in parallel.

5- Finally connect the Switch one terminal directly to the negative of the battery and the other terminal to the negative on the breadboard.

( We connect the LEDs and also the DC motor all in parallel in the circuit, so that every component can take the voltage they need to perform well ..

Every LED (2V) = 5V - 3V on the resistor

DC motor = (5V)

and also to make the outputs independent, so every component can take the amper they need to work well)

Building the real circuit

It might be complex but its so easy to connet just like we connected it on tinkercad

You can tie the wires that are not connected to the LEDs to minimize the complecation of the wires.

Now using gluegun attatch the part of the ON/OFF switch to the two parts of the motor.

put the motor between the two parts as shown in the pic.

Cut the cardboard like these parts and make a small hole to the parts that we'll put the motor shafts in, then make a place to fit the switch in another part as shown in the pic.

Put the breadboard inside and then the sticks in the shafts of the motors.

Cut two circles like these to make a small legs to the robot.

Make holes to the face of the robot to put the LEDs in.

The final project

And FINALLY we have a beautifull walking robot 🤩

Overcoming challenges

I didn't plan the shape of the robot well which should be include the breadboard and the wires that i didn't take in concederation .. so i fix that by adding parts of cardboard to extend the shape of the robot body.

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