Description
This small board is comes with the MQ-3 alcohol sensor. Analog and digital output for a variety of ways of connecting to your project. Supply (+5v DC) and the analog pin will emit between 0v and 5v depending on the intensity of the alcohol vapour being sensed.
The digital out pin (TTL) can connect directly to a relay, or your micro controller.
On board pot to adjust the sensitivity.
Note: This is for experimenting only. Not for critical applications.
Breadboard not included.