September 03, 2012

Arduino-based Letterbox Notification System

 Instructables user gwrome has a letterbox which is quite far from his home, so needed a way to check once the mail had been delivered without walking out to check. As many people have done, he has used an Arduino and hacked existing commercial products to solve the problem. In this case an extra button for an existing wireless doorbell system was modified to be triggered by an Arduino board. 

A light sensor is connected to the Arduino and detects the change in light when the letterbox is opened - which triggers the doorbell, which triggers the user to walk over and check the mail. Hopefully it isn't junk!

For complete instructions and notes, check out the instructable here. And we're on twitter and Google+, so follow us for news and product updates as well.

Looking to detect changes in light levels? Don't fool about with irregular light-dependent resistors. Instead use our LIGHT: light sensor module with the TEMT6000 light sensor which gives consistent and repeatable readings even between different units. Simple to use and versatile for many applications. For more information and to order, click here

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