Kenneth Smith
UNITED STATES OF AMERICA • + Follow
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Police Light Flasher
This project was to make a flashing strobe circuit that is similar to what emergency vehicles have for use in train layouts, rc cars, etc. The circuit is designed around a dual 555 timer chip running through a quad NAND gate to create the alternating rapid flash between two outputs. The NAND gates can source and sink the current so by reversing the polarity of the LED's you can get short "On" bursts with a long "Off" pause and/or long "On" time with short "Off" bursts. By having the Red/Blue LEDs in the normal polarity and headlights/taillights in reverse polarity will create a complete effect.
Schematic and Layout
Jan 21,2024
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Police Light Flasher
2 Layers PCB 28.6 x 33 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen
This board is to simulate the flashing lights found on an emergency services vehicle for 1:48 scale or larger vehicles
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Published: Jan 21,2024
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More by Kenneth Smith
- ESPHome Raspberry Pi Pico W Relay Board Interface This board is designed to plug directly into and draw power from the relay board input pin header. A...
- Police Light Flasher This project was to make a flashing strobe circuit that is similar to what emergency vehicles have f...
- 3 Rail Block Detector x 10 This project is used in 3 rail o-gauge train layouts to detect when a train is in a specific block o...
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