metronome using 555 timer

A metronome is a simple circuit produces audible click sound at a regular interval. Trimmer potentiometer provided to set the BPM, typically in beats per minute (BPM). Musicians use the device to practice playing to a regular pulse. Features Supply 5V-9V DC Download PDF Document

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Arduino 4 channel on-off (toggle) switch

Arduino based 4 channel toggle switch using 4 relays, 4 tactile switches, an Arduino Nano, the circuit required 12V DC, the relay can handle load up to 7Amps 230V DC or 7Amps/30V DC. Download Arduino Code Download PDF Schematic Download Code>>>> Github   ARDUINO CODE //Buttons int SWITCH1 = A3; int SWITCH2 = A4; int SWITCH3 = A5; int SWITCH4

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Arduino Nano 4 Channel Relay Shield

The Relay Shield is a module with 4 mechanical relays that provides you an easy way to control high voltage using Arduino Nano. 4 Channel Relay Arduino Nano shield contains onboard 4 relays, TSOP1838 Infra-Red Sensor, NRF24L01 RF transceiver module, 4tactile switches.  The circuit described here can be used for many applications like the infra-red remote controller, RF remote controller,

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3 Amps power operational amplifier using lm675

Power operational board can drive high current load up to 3Amps, the board helpful to drive Dc Motor, solenoid, Lamp, LED and industrial application. The project built around LM675 power op-amp from texas instruments. All resistors are 1%. Refer datasheet of LM675 for further information. I Output= VIN X 2.5amps/volt i.e Iout=1A when VIN=400mV Trimmer Pot for Max Rout Download

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