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9 Volt LED Circuits (Light Emitting Diodes)

LED Light Circuits

0 Comments - in LED Circuits
Circuit diagram for an ultra low-noise driver/supply circuit for white LEDs, using the IC LTC3201. Ensures a stable brightness in white LED driven items.
0 Comments - in LED Circuits
A circuit with 8 LEDs that flash in a somewhat random fashion (well it's not actually at random, but it does visually appear that way).
Photo: Sequential Flasher 5 LED Sequential Flasher 5 LED
The circuit flashes five LED's in sequence repeatedly until you turn it off. Flash rate is user adjustable. The circuit uses an IC chip on Board which you will then mount on the included mother board; battery holder is included. Powered by a 3 volt supply
Photo: Flasher Multi Sequential 5 LED Flasher Multi Sequential 5 LED
Flashes five very bright LED's in any one of seven, user-selectable, patterns. A COB (chip-on-board) IC makes assembly very easy; the chip is supplied premounted on its own board and a motherboard contains the entire circuit. Operates on 3 volts DC, batte
Photo: PIC LED Flasher PIC LED Flasher
Versatile light organ based on PIC microcontroller.
0 Comments - in Fun and Games
Electronic circuit schematic that works as a Hangman LED game. Fun game to play with a friend, and very educational and entertaining circuit to build.
0 Comments - in Fun and Games
Schematic for an electronic circuit that behaves as an electronic version of a Roulette wheel. Flashed 10 LEDs in sequence with slowing pace until only 1 remains illuminated.
0 Comments - in LED Circuits
Schematic for an electronic audio level VU meter that uses LED's to display the volume/audio levels.
Photo: Stairway to Heaven Electronic Kit Stairway to Heaven Electronic Kit
Pressing the switch while a dual LED is green advances you to the next stage, but mess-up and press while red, and you go back to the beginning. It can be tricky and a challenge. Fun and teaches some practical basic electronics. Operates on 9V battery.
A simple circuit that flashes an LED when a cell phone has an incoming call. Uses a coil to pick-up the signal emitted during an incoming call event. Cell phone call detector.