One feature I enjoy about my car is the automatic windshield wipers when rain is detected. I somewhat replicated that using a water sensor and servo motor. When the sensor is immersed into the water, the servo motor gets activated. The motor will continue to run until the water is not detected. The motor stops immediately once the sensor is completely dry. The water sensor I have is very sensitive to water, so even a droplet of water on the sensor will kick off the servo.

The parts I used were: Arduino Uno, jumper wires, servo motor, & a water sensor.
12/18

Water Sensor & Servo (windshield wiper replication)
This was really hard to record with one hand & dip and dry off the sensor with the other so bear with me.

Not my usual Arduino projects, this one was inspired by a friend to try out. It is not exactly a flyable drone but, more of a prototype model drone. I found this project to be very challenging considering I haven't worked much with DC motors, and I had to solder and build the frame myself. My soldering skills are terribly weak so I would say I spent the majority of my time on this project teaching myself to solder and re-doing it everytime I messed it up (happened often). I used a table saw to make the popsicle stick frame. Also, had never used a table saw before so that was another hurdle. I messed up the cuts about 75 times until I finally got them somewhat equivalent, then hot glued it all together. The wiring part was probably the easiest part for me thanks to YouTube tutorials. The two yellow propellers (DC motors) are wired up together and soldered down to a switch and one set of AA batteries. The remaining two motors are wired the same way using another switch and battery pack. Future improvements to this project would be definetley a cleaner frame build, reducing the amount of switches to just 1, and less batteries for a lighter copter. I would also like to add on a transmitter and reciever to the circuit to control the motors.

The parts I used were: 4 DC Motors, plastic propellers, popsicle sticks, 2 switches, 4 AA batteries.
11/18

Drone prototype video.
(Sorry for the obnoxious sound at the end, one of the propellers was hitting a wire. #oops.)

Super fun photoresistor project. A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity. I used 3 photoresistors to power on and off 3 LEDs. When you wave your hand over any of the three resistors, it causes the corrisponding light to power on, and when your hand isn't there they will power off. I found this project to be really fun, especially when I found out turning off my nearby lamp also made them turn on.

The parts I used were: Uno, 3 LEDs, 3 10k Ohm resistors for the LEDs, 3 LDR photoresistors, and jumper wires
10/18

Photoresistor video

This is my attempt at making a Bluetooth Smart door. I cut apart a shoebox to make a door and taped a latch to it. A basic Android app made with MIT app inventor 2 is used to control the Servo motor that is connected to the latch via paperclip.

The parts I used were: Arduino uno, jumper wires, HC-05 Bluetooth module, and a Servo motor.
9/18

Bluetooth door video

Not too much to explain for this project, just a simple Arduino smoke detector. It buzzes when the flame sensor detects a smoke signal.

The parts I used were: Arduino uno, jumper wires, piezo speaker, one resistor, & a flame sensor.
8/18

Smoke detector video

Another one of my top favorites. This was supposed to be a smart mirror, however I couldn't find a two-way mirror anywhere. It is powered by a Raspberry Pi 3 Model B. I used an old janky monitor I had laying around and took it apart, the only thing it is missing is the mirror.

The parts I used were: old monitor, VGA-HDMI dongle, RPI3 model B. rip two way mirror :(
7/18

A continuation of my distance project, with the addition of an LCD. I took out the flashing lights and buzzer and added a visual representaiton of the distance between an object (my hand), and the sensor.

The parts I used were: Arduino Uno, jumper wires, HC-SR04 ultrasonic distance sensor, LCD, and resistors.
3/18

Arduino uno distance radar. When an object is close to the sensor, the buzzer will go off and the LED's will begin to flash with respect to how close the object is. For example, the closer the object is, the buzzer will be louder and the red LEDs will light up. When the object gets further and further away, the sound gets softer & the LEDs go towards the green, indicating the object isn't close. Notice I had to use blue LEDs in place of yellow ones because I didn't have them on hand at the time.

The parts I used were: Arduino uno, 6 LEDs, resistors, jumper wires, piezo speaker & HC-SR04 ultrasonic distance sensor
12/17

This was my final project for my CS 298 Embedded Systems course. It was by far my favorite class & project I have made to date. I chose to do my project based on the best show --"The Office". I presented 10 questions on the LCD screen that the user could answer. The user had two push buttons, one for true, the other for false. If the user got the right answer to a question, the green LED would flash & their score would increment by 1. If they got it wrong, the red LED would flash & their score stayed the same. At the end of the game, the user would be presented with their final score, a max of 10 pts.

The parts I used were: Arduino nano, jumper wires, potentiometer resistors, LEDs, and LCD screen.
12/17