Arduino LED VU Meter on PCB

VU Meter or Volume Meter is very interesting project for music lovers. It is kind of an Equalizer, which is present in the Music systems where we can see the dancing of LEDs according to the music, if music is loud then equalizer go to its peak and more LEDs will glow, and if music is low then lesser number of LEDs shall glow. Volume Meter (VU) is an indicator or representation of the intensity of sound level over LEDs and can also serve as a volume measurement device.



Although we can also create a simple VU meter circuit without using any microcontroller but to enhance it and work in a more beautiful way, we have designed it as an Arduino shield. Here you can find the complete DIY tutorial and a step by step guide to design the PCB layout for this VU meter.

Check it out here.


Watch the VU meter working in this video.

DIY Arduino Smoke Detector

In this DIY project, a Smoke Detector Circuit is designed to sense the smoke in the air and display the same on 16x2 LCD. This circuit triggers the Buzzer when Smoke level becomes higher than 1000 ppm, the threshold value which can be modified in the code. This circuit mainly uses MQ2 Smoke/Gas sensor and Arduino to sense and calculate the level of smoke in air. 

Find the complete DIY on CircuitDigest.com