Category: Sensors

Wireless Bar Graph Brightness Display


Would you like an LED bar graph to wirelessly show you how bright or dim a room is elsewhere? Well this is just the solution for you! This project uses an MBed microcontroller, light sensor, LED bar graph, and a …

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Security Monitor


Do you want to detect when a person passes by? Whether it is outside your apartment or your room or even in the next cubicle, you can now wirelessly detect if someone passes by which will sound a voice message …

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Quadcopter Battery Monitor and Laser Controller


Do you plan on flying a quad copter? Well you’ll need a way to monitor your battery level! Otherwise, you will get excited and fly it and then the battery voltage will drop enough such that the current will drop …

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Sensing Light Levels with a Photocell

2012-08-06 15.21.55

Photocells are a popular component in electronics projects; they let you sense light levels. In this tutorial, you’ll learn how to create a wireless photocell.

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Joystick with XBee


Let’s get physical! Join this joystick to your XBee radio for a terrific way to add movement to your project, sending all kinds of things in different directions.

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Counting Money with a Coin Acceptor


Your XBee can make real money, all by itself. In this tutorial, we’ll walk you through how to program the radio, configure the acceptor and wire it up to an XBee so you can create projects that earn real cash!

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Feeling Force with an FSR


As opposed to a simple push button, force sensing resistors (FSR’s for short) can sense how hard a user is pressing down. In this tutorial, we’ll make a wireless FSR.

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802.15.4 Digital Input with a Button


In this tutorial, we’ll walk you through how to program an XBee radio for digital input and wire up a button so that you can use an XBee to make your digital electronics projects wireless.

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802.15.4 Analog Input with a Potentiometer

XBee Potentiometer

When it comes to analog input, it doesn’t get any easier than a basic potentiometer. In this tutorial, you’ll learn how to connect a “pot” to one of the two analog inputs on an XBee radio.

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