To Buy Custom built PCB’s at Low prices please visit: Circuit Diagram of PCB electronic piano circuit Circuit Operation It is a cheap, easy to build & educative project for beginners to PCB. Its most common application is in devices such as musical toys doorbells & alarms. The electronic piano PCB is a simple PCB based project that produces a melodic sound with the press of each button. 4 in our list of top 5 Best PCB Projects comes the electronic piano PCB circuit. The Drain output of the transistor then triggers the LED strip 4) Electronic Piano PCB When D9 goes high, the output DC signal acts as a control signal to the base of the BC547 transistor. The module feeds the analog out at pin A0 of the controller & the digital out to pin D8 of the micro-controller. They are usually working for decorative purposes.Īn AC audio Signal acts as input by the KY – 038 sound sensor module. They are a perfect starting point for people completely new to the concept of PCBs. The music reactive led circuit is a simple electronic circuit that responds to the varying rhythmic changes in the intensity level of any musical device. which then triggers a 5V SPDT relay to trigger a LED light. #PCB ELECTRONICS SERIES#which is then fed to the CD4017 IC through a series of transistors. The heart of this circuit is a CD4)17 IC. You will need the following parts to build this project. Clap switches are commonly used with DC light fixtures to be controlled by using sound. It is a very basic, easy to understand & relatively inexpensive to create. IC1 evaluates & corresponds with the input of the LDR while IC2 uses the output sent from IC1 to regulate the buzzer as per the position of the fridge door.įor cheap PCB Prototypes under 5$ please visit: 2) DIY Clap Switch CircuitĬlap switch circuit is a simple electronic circuit that makes use of the application of dynamic control of appliances by using sound. The operation of this circuit is based on the simultaneous communication between two NE555 IC’s. You will need the following parts to build this project Sr No
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