Jiraphong

Arduino Projects: Arduino Decibel Meter   Nikodem Bartnik   Arduino Projects I am sure you know those volume meters we mostly find in professional recording studios. That’s what this project is about, a simple volume meter (or decibel meter) made with Arduino, a microphone and few LEDs. The Arduino program for this project is very optimized and shortened so you can see what a properly written program looks like. Let’s start with a list of components we need for the project: 1 x Arduino microphone Basically, you can use every microphone that is compatible with Arduino just make sure that it has an analog output. 10 x LEDs  (5 green, 3 yellow, 2 red) Color doesn’t matter so much, but it looks more awesome with different colors. 10 x 200-220Ω resistors Jumper wires 1 x Breadboard Connect everything using the breadboard and make sure you are properly connecting the LEDs with resistors, it is very easy to make a mistake here. ...