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DIGITAL TILT SENSOR (ARDUINO COMPATIBLE)

DIGITAL TILT SENSOR (ARDUINO COMPATIBLE)

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Intro: Digital Tilt Sensor (Arduino Compatible)

Sensors are the best thing to get started with DIY electronics, you can get a wide variety of sensors, each suitable for one or more tasks. The arduino is compatible with a variety of sensors and I'm going to show you how to build different sensors to use with the arduino boards.
To start of with I'm going to show you how to build a tilt sensor, as the name suggests the sensor detects when it is tilted beyond a certain angle.

Step 1: Tools and Components

Picture of Tools and Components
Picture of Tools and Components
Here is what you need to get started with this instructable.
  • Tilt Switch
  • LM358 IC
  • 10k Pot
  • LED
  • 330 ohm resistor
  • PCB
  • Connecting Wires
  • 5v Power supply
  • Soldering Iron
  • Soldering Wire
  • Soldering Flux
  • Multimeter (Optional)

Step 2: Circuit

Picture of Circuit
Picture of Circuit
Picture of Circuit
2 More Images
The circuit is simple and used a tilt switch and an LM358, the tilt switch is what senses the angle and the LM358 is used to generate a digital signal which can be fed to the arduino. Also the LM358 has a voltage range of 3 to 32V which can easily be powered by the 5V regulated power supply of the arduino.
The 10k pot can be used to change the sensitivity of the circuit, if the LED turns on even without a change in angle you can can change the value of the pot to get the right threshold.

Step 3: Going Further

Picture of Going Further
Picture of Going Further
After you have tested out the circuit on a breadboard next you can build a PCB out of it, there are two ways you can do that one would be to build a arduino shield and another would be to make tiny PCBs that could plug into a breadboard a arduino prototype shield.
In the next ible of the series I would show you how to build a touch sensor.
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