Breathalyzer is a device for estimating blood alcohol content (BAC) from a breath sample. Based on this information, you may drive or not. Alinke has made simple Breathalyzer that can communicate with Android Phone.
The main component of this project is the IOIO board which enables an Android phone to receive data from Seeed Grove alcohol sensors. The project uses IOIO because it provides mature and easiest method interfacing Android phone with ‘outside world’ and able to communicate over Bluetooth than as opposed to a hardwired USB cable which ADK (API from Google) does not support. The designer said that the Android Breathalyzer is not a professional Breathalyzer and should be used for Amusement Purposes Only.
Project Firmware, Schematic and Documentation