Embedded Files
Coin box Done ;) =D
Coin box Done ;) =D
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)
Remember last week ! yeaaah.. now it's time to add some details to it.
It came up to my mind while thinking of the assignment to make a piggy bank or coin box that opens when I get near it.
I searched for similar projects like: coin box
But I decided to make it using IR sensor instead of the method shown in the link.
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?
software
Arduino IDE
Arduino IDE
I used Arduino to burn the code to arduino uno to start the trial physically
Tinker CAD
Tinker CAD
I used tinker cad to test and simulate the circuit before prototyping it physically to protect the electronics from burning or any problem
tools and materials
From left to right =D:
1- Compass
2- Hot glue gun
3- Cutter
4- Pen
5- Scissors
6- Cardboard
7- Ruler
electronics
arduino uno + usb cable
IR sensor
servo motor
breadboard
Male - Male jumper wires
Male - Male jumper wires
Male - Female jumper wires
Male - Female jumper wires
Push Button
Push Button
White LED + 330 ohm resistor
White LED + 330 ohm resistor
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?
I was using IR sensor in week 6 to detect if I'm near the box as an input, so it makes the servo motor moves to open the coin box as an output then closes it after 5 secs.
This week I upgraded it to make the IR sensor just opens the coin box and when I'm done I push the button as the other input to close the box again.
Now, for the other output I added White LED turns on as an indicator when I'm near the box and the box is open, and when I push the button it turns off.
At first, I opened tinker cad and started to put the electronics or tools I need then I started to wire it:
1- PIR sensor(INPUT): VCC ' red wire ' to +
GND ' black wire ' to -
out ' orange wire ' to pin 4
2- servo motor(OUTPUT): Power ' red wire ' to +
ground ' brown wire ' to -
signal ' green wire ' to pin 3
3- push button(INPUT): terminal 1 to GND
terminal 2 to pin 5
4- LED(OUTPUT): long leg + to pin 6
short leg - to resistor
then resistor 330 ohm to - to GND
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?
Wiring
Wiring
I wired my components following the wiring diagram in Tinker CAD
Mounting
Mounting
I started to put my electronics on the cardboard and mark with my pen to set the dimensions I need then I mount them, I started with arduino Uno and small breadboard at the bottom , then the IR sensor mounted to the top
I continued to mount the components so I marked where I should open for my: pushbutton, LED , IR sensor and USB port, in the front of the box
Servo mounting
Servo mounting
Last but not least I mounted the servo and shortened its wires and set them in the back.
Coding
Coding
I used divide and conquer technique to build my code:
I already had the code of week 6 with servo and IR sensor
I edited it to make the IR only opens the box using:
if (digitalRead(4) == LOW) {
servo.write(60);
}
I uploaded it and checked it's ok, then moved to the next step by adding push button as an INPUT_PULLUP on pin 5 and made it close the box again:
if (digitalRead(5) == LOW) {
servo.write(0);
}
Second upload and check... All good !
Great, now adding LED as an OUTPUT on pin 6 and make it turn on when IR senses obstacle and off when I press the push button:
if (digitalRead(4) == LOW) {
servo.write(60);
digitalWrite(6,HIGH);
}
if (digitalRead(5) == LOW) {
servo.write(0);
digitalWrite(6,LOW);
}
WhatsApp Video 2022-09-16 at 22.07.57.mp4Testing physically
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)
WhatsApp Video 2022-09-16 at 22.08.38.mp4I had a problem after finishing integration and connected my arduino that the servo was set to wrong angles and was open all the time.
I had 2 options to solve this: 1- is to remount the cover correctly on the servo horn
2- is to fix my code
and I choose to fix the code
the wrong and first code was:
if (digitalRead(4) == LOW) {
servo.write(45);
digitalWrite(6,HIGH);
}
if (digitalRead(5) == LOW) {
servo.write(90);
digitalWrite(6,LOW);
}
and the right and last code is:
if (digitalRead(4) == LOW) {
servo.write(60);
digitalWrite(6,HIGH);
}
if (digitalRead(5) == LOW) {
servo.write(0);
digitalWrite(6,LOW);
}
Second problem was that I first coded if (digitalRead(5) == HIGH)
So, when the IR detects obstacle moves the servo to 60 ... but the push button at the same time moves the servo to 0 .. so the servo was shaking between the two states
I realised that it could be a problem in this line and the push button sends HIGH when it's not pressed .. and if I push it, it sends LOW. So I changed this line to: if (digitalRead(5) == LOW) and reuploaded the code. PROBLEM SOLVED.
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?
It helped me more with mounting my components in the enclosure and I used my push button I will be using in my final project ^_^
Assignment Design Files
Assignment Design Files
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