How to make audio level, VU meter using LM3914 ic
Today i will show you how to make audio level indicator vu meter circuit using lm3914 ic make at home. simple and easy vu meter audio level indicator led light circuit make at home diy electronics circuit. Simple and easy electronics diy projects make at home.
In this post I will share on how to make a Dual Channel Vu meter using LM3914 IC. You can watch the video attached along with the post for complete construction & working of the project or continue reading the post
You can purchase the above components from the below affiliate links which would help me in many ways.
I designed my circuit using KICAD & tested the circuit on a breadboard & then designed my PCB layout & generated gerber & drill files for fabrication. For fabrication I used JLCPCB.com who provide very cheap & well built PCB's for just $2(5 piece).
The circuit is constructed mainly around LM3914. For this project i had to use two LM3914 since i wanted separate analyzer for each channel i.e. right & left. Each side analyzer is also provided with a trimmer, which can be used to calibrate. This circuit needs 12 Volts 1Amp power for operation.
After receiving the board I mounted all the components according to their annotation.
After mounting all the components, I connected the circuit to a 12v power supply & then connected the audio input from a laptop & also connected one more input to an amplifier.
Note: After you power the circuit & connect it to an input there should not be any LED On. If there is any LED on then adjust the trimmer such all the LED's are OFF.
After all the connection & calibration are done, then the last thing left is playing a song.
Also Note: When you play a song & if your LED is not reacting then adjust the trimmer until you see the LED On.
How to make audio level, VU meter using LM3914 ic
Today i will show you how to make audio level indicator vu meter circuit using lm3914 ic make at home. simple and easy vu meter audio level indicator led light circuit make at home diy electronics circuit. Simple and easy electronics diy projects make at home.
In this post I will share on how to make a Dual Channel Vu meter using LM3914 IC. You can watch the video attached along with the post for complete construction & working of the project or continue reading the post
You can purchase the above components from the below affiliate links which would help me in many ways.
I designed my circuit using KICAD & tested the circuit on a breadboard & then designed my PCB layout & generated gerber & drill files for fabrication. For fabrication I used JLCPCB.com who provide very cheap & well built PCB's for just $2(5 piece).
The circuit is constructed mainly around LM3914. For this project i had to use two LM3914 since i wanted separate analyzer for each channel i.e. right & left. Each side analyzer is also provided with a trimmer, which can be used to calibrate. This circuit needs 12 Volts 1Amp power for operation.
After receiving the board I mounted all the components according to their annotation.
After mounting all the components, I connected the circuit to a 12v power supply & then connected the audio input from a laptop & also connected one more input to an amplifier.
Note: After you power the circuit & connect it to an input there should not be any LED On. If there is any LED on then adjust the trimmer such all the LED's are OFF.
After all the connection & calibration are done, then the last thing left is playing a song.
Also Note: When you play a song & if your LED is not reacting then adjust the trimmer until you see the LED On.
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