Modified Radio Shack portable infrared security alarm connected to a LCD counter display. Useful for silently detecting if anyone is following you or alerting you to any illegal searches of your residence.
Every time the infrared alarm is set off (in CHIME mode) the LCD counter registers a pulse and it's count increases. Press the ZERO button to clear the count.
The infrared alarm is Radio Shack part number 49-425 and the LCD counter is Radio Shack part number 910-4910.
Pictures
- Commie Counter - Picture 1 Overview of the alarm connected to the counter display.
- Commie Counter - Picture 2 Rear view, showing the added LED and 1/32-inch jack which the LCD display connects to.
- Commie Counter - Picture 3 Internal view, the alarm's speaker is disconnected and the 5 volt chime pulse is sent to a 1/32-inch jack and red LED on the rear panel.
- Commie Counter - Picture 4 Internal modified circuit board overview.
Block Diagram