When using a transistor to turn on a device, it’s important to chose the right transistor, and to trigger it properly. NPN transistors get triggered with a high, PNP transistors get triggered with a low, and get connected differently in
I needed to know the pin designations on a small home security camera that was given to me. This post actually has little to do with the Arduino directly. I’m building a Arduino based security system, and this camera was given
Want to get started playing with Arduino’s, but don’t have the hardware? Download a free (or nearly free) simulator from http://www.arduino.com.au/Simulator-for-Arduino.html. This is a good way to get a feel for the platform, it’s abilities, and the code, before making
I have been successful in programming my Arduino to identify sets of digits transmitted from my Samsung remote. I used the excellent library at http://www.arcfn.com/2009/08/multi-protocol-infrared-remote-library.html as a starting point. I stripped out everything that wasn’t a raw number, and started
I recycled a InfraRed receiver module from an old VCR tonight. I connected it to my Arduino 2560, and I’m displaying raw data in the serial monitor whenever I press a key on the remote. I’m attempting to do something
Building on our previous “simple” piezo beep sketch, I now introduce a Morse “Paddle” Keyer. It contains two buttons, one timed for a 60ms dot, the other for a 180ms dash. It uses the tone() command to activate the Piezo,
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