Hello world! I had a broken alarm strobe bought in china and i thought today i am going to fix it with a Arduino Nano, Now it also has sound. I removed the original PCB because some copper parts fell off, so i made my own PCB for the leds with a prototype PCB Board. Wanna build it yourself? follow the link for the schematic, Code & Parts list.
On the bottom of the Strobe enclosure i placed 2 wires for GND & VIN. I connected the Red wire to VIN & the Black to GND on the arduino Nano, and connected a 12v Adapter.
It does not make allot of sound, but i want to use it for intruder detection and add a PIR sensor to it so this small alarm triggers and i know something is moving in front of my door.
Step 1: Schematic, Code & Parts List.
Just wire it up like the schematic put it on a breadboard to test first & then solder it onto a Prototype PCB Board and cut it so it fits into your Alarm Strobe. It should work after uploading Make sure you ADD the short pins of the LEDS to ground.
- Arduino Nano.
- 6 Leds. (Short pin on led is ground.)
- PCB ProtoType Board (I used 5x7 cm)
- Jumper wires set MM/FF/MF
- 6 Resistors (Value is up to you, I did not use them!)
- Breadboard (optional)
- alarm strobe enclosure, (I used a broken one you can buy it here) very cheap!
- 9 Volt to 12 Volt Adapter.
Good luck! You Can change Tones in the code! And program your Alarm Strobe now!
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