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1.Scrolling text:https://www.brainy-bits.com/scroll-text-using-the-max7219-led-dot-matrix/
2.Otto robot:https://www.ottodiy.com/
3.CONTROLLING A SERVO WITH ULTRASONIC SENSOR
https://www.instructables.com/id/Controlling-a-Servo-With-Ultrasonic-Sensor-Signal-/
4.Ultrasonic Distance Measurer With LCD Display:
https://www.hackster.io/onatto22/simple-ultrasonic-distance-measurer-with-lcd-display-c4cac6
5.Humidity + Temperature Sensor with 16×2 LCD display:
https://www.hackster.io/onatto22/dht11-humidity-temperature-sensor-with-16×2-lcd-display-1046e0
6.Keypad Lock:http://arduino-tutorials.eu/arduino-keypad-lock-tutorial
7.10 led chaser:https://create.arduino.cc/projecthub/msr048/led-chaser-f6ec89
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