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The 555 circuit below is a flashing bicycle light powered with four C,D or AA cells (6 volts). Two sets of 20 LEDs will alternately flas... -
This portable solar lantern circuit uses 6 volt/5 watt solar panels are now widely available. With the help of such a photo-voltaic pane... -
The circuit presented here waters your plants regularly when you are out for a vacation. The circuit comprises a sensor part built usin... -
When turning a computer on and off, various peripherals (such as printers, screen, scanner, etc.) often have to be turned on and off as ... -
The electronic dog repellent circuit diagram below is a high output ultrasonic transmitter which is primarily intended to act as a dog an...
