Do we need to adjust the voltage control knob to change the motor speed? then this smart Motor PWM Speed Controller Circuit using IC 555 to control DC motor speed. Also, it turn motor power ON and OFF very fast so motor gets average voltage and its speed changes; like dimmer switch but for motor. […]
DIY Projects
Digital Dice Circuit
Digital Dice Circuit is small electronic like thing, which work like real dice and shows number from 1 to 6; it also uses lights and buttons which is no need to throw. As a result, this circuit is good for games and fun and is easy to build. Circuit Working: Parts List: Components Values Quantity […]
Low Battery Indicator with Buzzer Circuit
To begin with, this Low Battery Indicator with Buzzer Circuit is very simple and uses basic idea and few parts. Buzzer make sound when battery is low and warn us and it help us to know when to change the battery so device do not stop suddenly. Circuit Working: Parts List: Components Values Quantity Resistors […]
Clap Switch Circuit using IC 4017
The Clap Switch Circuit using IC 4017 turns ON and OFF with a clap sound; it uses a speaker as a microphone because both components have a similar construction; therefore, a speaker can also work as a microphone in this circuit. Circuit Working: Parts List: Components Values Quantity Resistors (All resistors are 1/4 watt) 3.3k […]
Intercom Circuit
Intercom Circuit is like smart walkie talkie for home use, no need of button it work hands-free with electronics. We talk in mic and it changes voice to electric signal and amplifier make signal strong. Furthermore, one part stop our own speaker sound, so there is no echo or noise and same signal goes to […]
Simple Phone Transmitter Circuit
Simple Phone Transmitter Circuit uses few parts, as it take sound from phone talk and changes to signal and also signal goes far using antenna. Furthermore, this circuit is easy to make and works well with landline phone. Circuit Working: Parts List: Components Values Quantity Resistors 10k, 47k, 330Ω (1/4 watt ) 1 each Capacitors […]