Embedded Files
Ideation
Ideation
Tell us about your assignment's idea for this week. Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)
Tell us about your assignment's idea for this week. Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)
a worm robot. It is a robot that simulates the mechanical movement of a worm despite being operated by a simple electronic circuit without any microcontroller implemented.
What inspired me is the motion technique that makes the robot move only in the direction of the heavy load of the DC motor; It can't move backward.
Tool Chain
Tool Chain
Which software/machines/materials did you use in the assignment? Why?
Which software/machines/materials did you use in the assignment? Why?
Tape - Straws - Barbeque sticks
Cardboard
male-female jumper wires
3mm plywood sheet
Design/Preparation Process
Design/Preparation Process
Explain the design and/or preparation process of your assignment. How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?
Explain the design and/or preparation process of your assignment. How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?
Stage 1: Tinkercad circuit
1- sign in to Tinkercad, then start a new circuit design from Create menu
2- select the needed components and drag them to our workspace (power supply - hobby gearmotor - LED - slideswitch)
3- Connect the LED separately to the power supply after calculating its proper resistance value. Here we used 150 ohms.
4- change the resistance value to 330 Ohms (the available resistance in our toolbox). It worked but with less luminosity.
3- connect the LED and the Gearmotor in parallel to the power supply with the slide switch
4- click start simulation button on the top right corner to check if our designed circuit will work or not
Stage 2: wooden circle design (fusion 360)
We need to design a circle to be connected to the motor shaft with an M3 screw connected to it. We need the screw to be fixed without any nuts from the back. That is why we will choose a smaller dimension than the standard M3 dimension.
motor dimensions reference
for the screw, we try a circle with 2.9 mm diameter so that the screw is tightened enough to the wooden part.
for the shaft corners, we used a 5.4mm diameter circle.
for the shaft thickness, 3.7mm.
final sketch
extruded body
Development/Implementation Process
Development/Implementation Process
Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?
Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?
Stage 1: Building the circuit
1- check the LED with 3V battery to ensure it works.
2- check the motor is working with the adapter.
3- Connect the circuit with the breadboard.
3- check that the LED works with the adapter (with resistance connected)
Stage 2: Build the enclosure
Cut the cardboard with suitable parameters to the motor size
start building our motors' enclosure
Use barbeque sticks and rubber band to fix the motor to its enclosure
building the enclosure for the other side with LED and slide switch implemented
implement the wheels using straw technique
use straw technique for the joints between the two sides
adding the shaft circular part from cardboard (which wont work)
Overcoming Challenges
Overcoming Challenges
What kinds of challenges or problems did you face while doing the assignment, tutorials, or exercises? How did you solve them? Did you ask for help from an instructor or peer? Please provide a link to the tutorial or article that you used to solve your problem (if any)
What kinds of challenges or problems did you face while doing the assignment, tutorials, or exercises? How did you solve them? Did you ask for help from an instructor or peer? Please provide a link to the tutorial or article that you used to solve your problem (if any)
Shaft circular part is not fixed to the motor shaft and not strong enough
Solution: design a laser-cutted part instead with M3 screws instead of the weak barbeque sticks.
Failed trials to solve it:
tried to decrease the motor speed with resistance. It failed despite that it worked with Tinkercad.
connect the motor to a 3V coin battery. (worked)
different versions of the motor. not all yellow DCs work with the same speed when connected to the same voltage. I replaced my motor with a slower one and it helped in maintaining balance.
Lesson learned: never ever try to make something that moves with cardboard. It is so weak with motion and not sustainable at all.
Final Project
Final Project
How can you use the skills and knowledge that you've acquired this week in your final project?
How can you use the skills and knowledge that you've acquired this week in your final project?
Assignment Design Files
Assignment Design Files
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