Rapsberry Pi Alarm (ralarm)#

I've always had issues when it came to waking up - whenever the alarm rang, I shut it down and then I went right back to sleep.

I thought that this was unacceptable and I came up with a solution - an alarm that doesn't just ring, but it also flashes a powerful beam of light.

You might call it a little inhumane, but the solution did wonders!

The Raspberry Pi Alarm (the picture is missing the external light source that is triggered by the alarm)

Features#

The alarm brings the following features to the table:

• A simple (but configurable) single-pitch sound alarm, controlled by a transistor and a 555 timer (ultimately triggered by the Raspberry Pi);

• A relay controlled light source, allowing for 220V light bulbs to be directly connected to the circuit;

• An SSH interface (via Wi-Fi) that provides easy access to the scripts;

• Time syncing under the NTP protocol; failure to connect to the internet will also be notified via audio and light clues;

• A very configurable alarm application that benefits from the full power of a lightweight Linux distribution;

• Very low power consumption, running at about 5W (at most 7W).