01 | I started this task by making sure I define PWM pins on ESP32 C3 Supper mini using the help of AL Gemini

02 | I chose the viration motor as the out put forthis assignment as it will be also used in my final oproject

03 | With the help of AI Gemini I defined the parts I need to create the driver for the motor and how to connect it to the ESP32-C3 SuperMini

04| I downloaded the symbol and footprint of the Transistor 2N222

05 | As well als the diod 1N40001 that will control the current before it leaves the motor

06 | Aon KiCAD schematocs editor I added the parts (Transistor, Diod, 1K resistor, hairpin) → connected the parts as defined from AI Gemini → Then looked for errors in Design Rules Checker

07 | and connected this output drive to the rest of my PCB design

08 | then I updated the PCB Editor to add the new part

09 | Then I noticed that the DiodeCathode was connected in the wrong way

10| I flipped it in the Schematic designer first

11 | then I updated the PCB Editor again

12 | I found the the current layout will not be suitable and I hasd to rearrange everything

13 | Rechecking the connection with the help of Gemini

14| Rewired all the pins from the input and the output

15 | Redesigns the routes on the PCB

16 | Designs an additional PCB for the Vibrator Motor drive and made the routes 1mm thick as I wanted to design this drive using Vinyl cutter

17 | I connected all the parts to breadboard

18 | I used this code generated by Gemini AI to test the Vibration power, speed and duration following this workflow: Open Arduino IDE → select the ESP32 C3 library → copy past the code → verify the code → updload to microcontroller → check if it need "Press reset button"

					
const int motorPin = 10; // Connect to the 1k resistor -> Transistor Base

void setup() {
  pinMode(motorPin, OUTPUT);
}

void loop() {
  // Gentle pulse
  analogWrite(motorPin, 150); // 0-255 scale
  delay(500);
  
  // Hard pulse
  analogWrite(motorPin, 255); 
  delay(500);
  
  digitalWrite(motorPin, LOW);
  delay(2000);
}				
					
					
					

19 | It was working, I changed the values and saw how the vibration was changes

20 | I imported the SVG file of PCB I designed in the SignMaster Pro to use the SkyCutter and followed the following workflow: placed the copper tap on a hard 3D printed flat plate → tapped the plat on the cutting mat → fixed the setting of the cutter to lowest speed and lowest force

21 | Once it was completed, I removed the unwanted parts and left the circuit to solder the parts to it

23 | Then I startedthe soldering workflow : The Solder temperature was on 300 degrees culcies → put some past on the solder → made two soldering spots on the circuit → then tried t connect the risitors as the firts part

24 | but the copper routs was removed with the solder :)))))

25 | this is my second trial cutting Vinal circuit

26 | This time I used the microscope to have a bettwe look in soldering the parts

27 | I started by applying small drops of risen that will hole the copper circuit as well as the small electronic parts I wantedt o solder

28 | I cured the it with UV blue light before I start soldering

29 | I applied soldering past on the connection parts

30 | I soldered all the part but it was not an easy process. I was always afraid of creating short circuits adn hhaving to repeat all. The first parts I soldered were the best (diod, VM) but as i progress my soldering got worst i think for two main reasons, I am not used on soldering yet, the curit was very small, and I got both tried and scared of melting the plastic I applied the circuit on.

31 | I use the Voltmeter to check for two main things; I did not mistakenly create short circuits when soldering the parts, and that when suing the resin to fix the small parts in place, I did not isolate them from the circuit and soldered on top of that. Results, the circuits is complet.