Arduino, LEDs, LCDs, and other micro-electronics. Hacktronics
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Magnetic Proximity Sensor |
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Magnetic Proximity Sensor, or a Change Over Reed Switch tutorial. Operation is pretty simple. When no magnet is near the base, a connection is made through one of the wires, but when a magnet is near the base, a connection is made through the other wire.
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Arduino Character LCD Tutorial |
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 Your Arduino has things to tell you. One of the easiest ways to let it communicate is to attach a character LCD. These LCD modules are a lot of fun, however they can be tricky to get working right. Many a hacker has spent hours trying to get one working, only to suffer through frustration and humiliation. Hacktronics is here to help. Our LCD HackPack, along with this tutorial, has everything you need to get an LCD working quickly with your Arduino. The LCD modules covered here are based on the very popular HD44780 controller.
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Arduino - Getting Started (Flash the LED)
Arduino is a microcontroller board that is developed as an open source project. It is becoming very popular around the world as both a platform for beginners getting started with embedded computing, and for experienced developers who want to quickly prototype a project. There are several versions of the board. We feature the most popular version, the Arduino Duemilanove, in this How-to. Anyone who has worked with microcontroller projects can tell you that the hardest part of working with a new platform is the first step of getting a basic setup of hardware and software to work. "Get the LED to flash", is the first thing you should do with a new platform. Once you have done that, everything else gets easier. This task of "blinking the LED" is what we cover here with the Arduino board. (You can purchase the Arduino here) |
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Arduino and 7 Segment LED |
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How many TV shows and movies have you seen with some mysterious electronic device counting down to zero on one of those 7 segment LED displays? If we were in that situation, we would be thinking: "Wow, where did they get that in cool blue? They are usually red." "I wonder if it has a common anode or cathode?" "That would take up a lot of IO pins on an Arduino." TOO LATE! The seven segment display is a pretty simple device. Its actually just 7 LEDs (8 really including the decimal point) arranged so different combinations can be used to make numerical digits. This tutorial will show you how to wire one up and drive it with an Arduino.
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Beginning Solderless Breadboards |
Solderless Breadboards are the best way to prototype an electronics project. It is reusable, does not require any soldering, and is simple to use. With DIP components that fit perfectly into the breadboard, using simple jumper wires to create your circuits, you can make improvements and additions easily and quickly without reworking with your solder gun.
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