Want to control appliances by touch? then this circuit makes it possible, as this Arduino Touch Sensor Relay Circuit uses Arduino and touch sensor. The Arduino reads the touch signal and uses the relay as a toggle switch. When we touch the sensor once, the relay turns ON and when we touch the sensor again, […]
Op Amp 741 Sound Generator Circuit
Here is the tutorial for small circuit with big sound; this Op Amp 741 Sound Generator Circuit creates stable tone for hobby projects. The Op amp works like mini sound machine with no complex parts and with no hard wiring, just connect parts and enjoy instant sound in just few minutes. Also, this circuit is […]
Audio Sound Generator Circuit using IC 555
Want a simple sound maker? then make noise with this electronic circuit; this small circuit makes loud beep sound from speaker using only one 555 timer, then the circuit turns 9V battery into instant audio tone. Also, this Audio Sound Generator Circuit using IC 555 is easy to build and is great for learning. Circuit […]
Fading LED Circuit using Arduino and Potentiometer
This project shows how to control Fading LED Circuit using Arduino and Potentiometer and this potentiometer gives analog voltage; therefore, by rotating the potentiometer knob varies the voltage output and Arduino reads this variation. Then Arduino reads it and changes LED brightness and this LED brightness changes smoothly; furthermore, the circuit is easy to make […]
Simple Up Down Fading LED Circuit
This circuit makes LED glow slowly and then fade slowly which looks like breathing effect, also it uses simple parts like only resistor, capacitor and transistor and with no microcontroller. Furthermore, beginners can easily build this Simple Up Down Fading LED Circuit on a breadboard, and they can use it in shopping malls, homes and […]
35V Dual Output Power Supply Circuit
This tutorial teaches us about the 35V Dual Output Power Supply Circuit, the circuit outputs is plus 35 volts and minus 35 volts, powering audio amplifiers and op-amp circuits. Circuit also uses transformer, bridge rectifier, big filter capacitors and further, its output becomes +35V, -35V and ground. Circuit Working: Parts List: Components Values Quantity Capacitors […]