Audio & Sound Projects

Sound Sensitive 12v Bulb Control

Automatic 12V bulb controller that turns lights ON with loud sounds (claps, voice). Uses a microphone/amp, comparator/transistor, and relay/MOSFET for safe 12V switching.

Digital Audio Recording and Playback Single Integrated

Build a digital audio recording and playback circuit using a single integrated chip. Step-by-step guide includes circuit diagram, components, working principle, assembly, and testing for DIY audio projects.

Amplifier Using TDA7297 IC Circuit

Build a stereo amplifier using the TDA7297 IC: schematic, pinout, components, power supply, PCB tips, heat-sink, troubleshooting, and performance guidance.

Diy DJ Bluetooth Speaker Circuit

Learn to build a DIY DJ Bluetooth Speaker Circuit with an amplifier, Bluetooth module, and speaker setup. Complete guide, circuit diagram, and FAQs included.

Diy Solar Bluetooth Speaker Bluetooth Speaker Circuit

Learn how to build a DIY solar Bluetooth speaker circuit using solar panels, an amplifier IC, and a Bluetooth module for portable, eco-friendly audio solutions.

Smallest Bluetooth Speaker at Home Circuit

Create the smallest Bluetooth speaker at home using a compact Bluetooth module, amplifier, and mini speaker. Step-by-step DIY guide with circuit diagram included.

How To Make MT8870 DTMF Phone Audio Decoder

Learn how to make an MT8870 DTMF phone audio decoder at home. Step-by-step guide with components, circuit, working principle, and testing tips.