The circuit shown here uses a NPN transistor connected to a an Arduino output pin to switch an LED pin, obviously this is just an example. In real life you…
iainhendry71
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User submitted example for a HC-SR04 Ultrasonic Sensor #define echoPin 7 // Echo Pin #define trigPin 8 // Trigger Pin long duration, distance; // Duration used to calculate distance…
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When you are looking for low cost sensors to begin experimenting with then a PIR is a nice low cost option. In the following example we will demonstrate the HC-SR501 PIR sensor,…
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This example shows how to drive a seven segment display, this is the most basic example in which we use various digital pins as outputs, 7 in this case. In…
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A reed switch is a small device that when the device is exposed to a magnetic field, the two materials inside the switch pull together and the switch closes. When…
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In a sensor pack we recieved recently there were a large amount of sensors but little documentation. One of the sensors that caught our attention was a touch sensor. These…