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Automated Crib Lights – Circuit Schematic
Automated Crib Lights
This circuit is intended to drive the various lights decorating the crib prepared during Christmas season at many homes in Latin Countries, especially for child...
Automated Crib Lights – Circuit Schematic
Automated Crib Lights
This circuit is intended to drive the various lights decorating the crib prepared during Christmas season at many homes in Latin Countries, especially for child...
Emergency Light & Alarm – Circuit Schematic
Emergency Light & Alarm
This circuit is permanently plugged into a mains socket and NI-CD batteries are trickle-charged. When a power outage occurs, the lamp automatically illuminates....
Emergency Light & Alarm – Circuit Schematic
Emergency Light & Alarm
This circuit is permanently plugged into a mains socket and NI-CD batteries are trickle-charged. When a power outage occurs, the lamp automatically illuminates....
The Vx2SE solar engine – Circuit Schematic
The Vx2SE solar engine
The Vx2SE is a simple discrete voltage-doubling SE for driving an LED. If the load is a red or green LED, J1 is used together with just one red or green LED fo...
The Vx2SE solar engine – Circuit Schematic
The Vx2SE solar engine
The Vx2SE is a simple discrete voltage-doubling SE for driving an LED. If the load is a red or green LED, J1 is used together with just one red or green LED fo...
Wifl Rigter`s SIMD1 V0 – Circuit Schematic
Wifl Rigter`s SIMD1 V0
It provides much quicker turn-on when the Sun goes down. Note that a smaller value for the resistor will provide faster turn-on; the trade-off is that a smalle...
Wifl Rigter`s SIMD1 V0 – Circuit Schematic
Wifl Rigter`s SIMD1 V0
It provides much quicker turn-on when the Sun goes down. Note that a smaller value for the resistor will provide faster turn-on; the trade-off is that a smalle...
BEAM pummer circuits – Circuit Schematic
BEAM pummer circuits
The PowerSaver Flasher uses capacitive output coupling to produce brighter shorter flashes and has a much lower average current drain than standard bicore or 7...
FLED -based Heads – Circuit Schematic
FLED -based Heads
Shortly after the 2002 WCRG, Ori Barbut started tinkering with Ben Hitchcock`s FRED SE. His aim was to create a simple, solar-powered, light-seeking head desig...
Supply Voltage Indicator – Circuit Schematic
Supply Voltage Indicator
This simple and slightly odd circuit can clearly show the level of the supply voltage (in a larger device): as long as the indicator has good 12 volts at its in...
To simulate the Gyralite (dual flashing headlights). – Circuit Schematic
To simulate the Gyralite (dual flashing headlights).
This circuit must be connected to a 5 volt DC source. See my RR page for several 5 volt supplies. Note the flashing LED is optional, but looks s-o-o-o-o good on...
LED driven tail/brake Light Cluster – Circuit Schematic
LED driven tail/brake Light Cluster
This circuit was designed on request to drive a Light-cluster formed by several LEDs that can be mounted in the vehicle as a tail and brake light. When SW1 is o...
Bicycle back Safety Light – Circuit Schematic
Bicycle back Safety Light
This circuit has been designed to provide a clearly visible light, formed by 13 high efficiency flashing LEDs arranged in a pseudo-rotating order. Due to low vo...
Home Built Laser Projector – Circuit Schematic
Home Built Laser Projector
I think everybody saw Laser Effects that shows up stages, discos or festivals. There are two categories on the laser effect. One is Beam Effect, it shows the la...
8 Random Flashing Leds Circuit – Circuit Schematic
8 Random Flashing Leds Circuit
This project flashes eight LEDs in an apparently random manner. It uses a 4060 combined counter and display driver IC which is designed for driving 7-segment LE...
6V Ultra-Bright LED Chaser – Circuit Schematic
6V Ultra-Bright LED Chaser
This is a spectacular but completely useless project. It lights Ultra-Bright LEDs in a sequence and each LED flashes brightly very briefly. The LEDs light-up go...
3V LED Chaser – Circuit Schematic
3V LED Chaser
There are many 9V chaser circuits that seem to waste about 7V when driving LEDs that are only about 2V. This project is unique, because it uses only two inexpen...
A 16x16 LED Matrix – Circuit Schematic
A 16x16 LED Matrix
In the early `80s, I read some articles on LED arrays. They described using arrays of 64 or more LEDs as crude oscilloscopes and other interesting things. I dec...
13 Color LED Rainbow – Circuit Schematic
13 Color LED Rainbow
This circuit uses a set of 13 differently colored LEDs to generate a full color spectrum. The photo does not fully represent the colors generated due to camera ...