The board can either use your PC or your voice and more information about the new Arduino ... audio input, so that you can record sound bytes coming from an external source, such as the audio ...

Here is the circuit of an Arduino-based Panic ... if necessary. // PANIC ALARM - ARDUINO // // by T.K.Hareendran // int rlyPin = 12; // Relay Output Pin int sensPin = 2; // Switch Input Pin int ledPin ...

Here’s an Arduino library that will let you drive a very large number of LEDs. [Elco Jacobs], an electrical engineering student, is the author of the library. He has a work-study job that has ...

the output from the Arduino is the input to the circuit). Conversely, the comparator output and the connection to the Arduino’s analog converter (A0) are labeled nodes from the “Output and ...