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Flame sensor turning on a fan

For this project I had to learn how to use a flame sensor and a fan in tandem . This took a while to get the hang of at first I was having a really hard time with the hardware involved but once I took a step back and re watched the videos I was provided I got the hang...

Ultrasonic controlling a servo

The video  In short an ultrasonic sensor works by shooting out a frequency and waiting for the said frequency to bounce back to the sensor. We are then able to judge distance by how long the delay is between when the sensor fires and when the sound returns. servos are...