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The Witness Camera project – Circuit Schematic
The Witness Camera project
Just 4 integrated circuits and an handful of passive components: the circuit of the Witnesscam is simple. The AVR ATmega32 does an excellent job here. Add the J...
Allarm circuit – Circuit Schematic
Allarm circuit
Making yourself an alarm is both useful and interesting: but the best part is when you take the remote control out of your pocket, and switch on the alarm while...
Allarm circuit – Circuit Schematic
Allarm circuit
Making yourself an alarm is both useful and interesting: but the best part is when you take the remote control out of your pocket, and switch on the alarm while...
Jamming circuit – Circuit Schematic
Jamming circuit
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Jamming circuit – Circuit Schematic
Jamming circuit
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Replicate DVR Camera Printed Circuit Board – Circuit Schematic
Replicate DVR Camera Printed Circuit Board
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Replicate DVR Camera Printed Circuit Board – Circuit Schematic
Replicate DVR Camera Printed Circuit Board
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DVR Camera Video Recorder PWB Copy – Circuit Schematic
DVR Camera Video Recorder PWB Copy
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DVR Camera Video Recorder PWB Copy – Circuit Schematic
DVR Camera Video Recorder PWB Copy
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Powerful Siren – Circuit Schematic
Powerful Siren
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Emergency Light & Alarm – Circuit Schematic
Emergency Light & Alarm
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Park-Aid – Circuit Schematic
Park-Aid
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MINI PIEZO SIREN circuit – Circuit Schematic
MINI PIEZO SIREN circuit
The piezo diaphragm can come from a music card and if you have two or three diaphragms, they can be added in parallel-as shown on the diagram to see how they af...
Radar Detector Laser Jammer – Circuit Schematic
Radar Detector Laser Jammer
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Giving a false speed reading – Circuit Schematic
Giving a false speed reading
This is basically how the Scorpion jammers work except that instead of sending back a shifted doppler corresponding to a certain speed, they send back a constan...
laser jammers – Circuit Schematic
laser jammers
A laser pulser using the same laser diode LI does. I made the pulser so it could be adjusted from 50 to 20, 000ppm. I tested that on my LIs and rx65, they only ...
Remote Doorbell Controller – Circuit Schematic
Remote Doorbell Controller
I usually can`t hear the doorbell when I`m in the basement. This project describes how to add an inexpensive remote doorbell to your existing household doorbell...
Outdoor surveillance with condenser microphones – Circuit Schematic
Outdoor surveillance with condenser microphones
Condenser Microphones typically sound better than dynamic microphones. If you are unfamiliar with these two types of microphones you may want to read about them...
Garage door open indicator – Circuit Schematic
Garage door open indicator
There are battery powered wireless systems on the market, but the ones I found would signal that the door was open even if you left it open just a few inches fo...
Circuit Diagram of Water Activated Sensor Alarm – Circuit Schematic
Circuit Diagram of Water Activated Sensor Alarm
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