Here is an image gallery of TACHTASTIC, the AVR Tachometer, all images are arranged in order of when they were taken (50+ images), the gallery has pics from the very start of the project when I was just testing out on breadboard, final breadboard test prototype and finally images of the completed PCB and sensors. I also have got two images of the cardboard cut-out which I used to judge the placement of components.
Details about the Tachtastic Project are here (http://zaidpirwani.com/826)
how to connect motor through audio jack ??
motor is NOT connected to the audio jack… the sensors are made in a such a way that they connect to the audio jack…