The smallest LED Vu-Meter with LM3915 on DIY PCB - Tutorial
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- Опубліковано 12 лип 2024
- ► $2 for 1-4 Layer PCBs, Get SMT Coupons: jlcpcb.com/DYE
Hi, this is probably the smallest LM3915 Vu-Meter you have ever seen on UA-cam (without SMD) with a PCB Size of 28*28mm! It is designed to be connected to a pre-amplified audio source or directly to the amplified outputs of the amplifier. This circuit must be powered with 9-12V DC,
After trying the excellent service offered by JLCPCB I recommend it, the quality of the PCB is high, customer service is always available and professional, the time of realization is short and the delivery of PCBs is by express courier. JLCPCB is a great place to get hight quality custom circuit boards at an extremely low price, you can buy 5 PCB Boards (Any Color) for 2$ !!!
Components:
- 1x LM3915 IC
- 1x 10 LED Bargraph
- 1x 18 PIN Dip
- 1x 1uF 25/50/100V Electrolytic Capacitor
- 2x 2.7KΩ Resistors
- 1x100KΩ Resistor
- 1x 1N4007 Diode
- 2x PIN for Dot/Bar Mode
- 3x PIN for Vcc | GND | Sig
- PCB: drive.google.com/file/d/1XcO8...
*Don't use my PCB for profit or sponsored videos.
✅ Subscribe to my UA-cam channel It's FREE!
Chapters:
0:00 - Intro
0:45 - Circuit Diagram
1:48 - JLCPCB Upload
2:15 - Unboxing
2:52 - Assembly
5:10 - Test
5:36 - Music Test
6:44 - End
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✅ UA-cam: / stefano91ste
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WARNING: This video is only for demonstration. I don't take any responsibility.
#LM3915 #VuMeter #diyprojects - Наука та технологія
EDIT [ 14/04/2021 ]: PCB Here: drive.google.com/file/d/1XcO8OrXTiZGpRT3iv5fnueobhHlnWvk-/view?usp=sharing
*Don't use my PCB for profit or sponsored videos.
⚠ The Link for this PCB will be released on April 14, or as soon as this video reaches 200 Likes and 200 Comments. ⚠ I decided to do this little experiment to raise awareness on the fact that the UA-cam algorithm penalizes videos with few interactions (like, comments, etc.)... so I ask you to support me by leave a LIKE on this video and writing a COMMENT. Thank you!
Stefano
Hello dear friend, what is this track at the end.?
very original this seen meter. I would like to know more details to realize some. Please contact me I am from France.
dany.o13m@live.fr
Sincerely, Dany
Hi, the track is "Once Was - Kwon" from UA-cam library
I bought these! They just showed up in the mail. Beautiful quality. I’m going to build one of them right now. Thanks!!
Thanks to you for appreciating my work=)
Awesome project. great design too. Thanks
Thank you =)
Amazing! Good job!
Thank you =)
Cool little VU meter! 👍
Thank you Max! =)
No problem! :)
Nice design 👍⚡ Awesome ☺️
Thank you =)
Excellent VU ❤🇧🇷😉👍👏👏👏👏👏
Much better than the first vu-meter!
Thank you =)
Io ovviamente resto in attesa, è uno dei miei circuiti preferiti.
Ti porterò diversi like...
Grazie Mille! ho voluto provare questa cosa, speriamo non sembri "antipatica"
I just ordered 5 of your pcb boards. I am looking forward to designing the circuit to drive 10 LEDs by way of a linear output Hall Effect sensor.
amazing!
Thank you =)
May I use LM3914 or LM3916 in this project? I have an over-abundance of these two ic’s. Thank you, awesome video!
Wonderful! hopefully GERBER data
It is published before April 14.
Gerber is now public ;)
how do i do for control of the signial level? Congratulations for vídeo! Thanks!
Great 👍
Thank you =)
The quality of those boards is superb.🤔
Thank you so much:)
Another great project but I do wish you would build them with more permanent power and audio headers. Many people building these would love this. Just a suggestion and doesn't take away from the superb build ideas.
Thanks! Any suggestion is precious to me, I should start building them with microphone, in order to make them completely autonomous
@@Stefano91ste and slip a barrel jack on there too for power.
I need a circuit to measure the engine speed of an induction motorcycle. Can you guide me how to build it?
what is the bridge full name? that indicate for modes?
Salve e complimenti per il bellissimo progetto....sulle casse quindi ci và il cavo blu ed il cavo giallo?
Ciao, grazie mille! Esatto, giallo e blu sono ingresso segnale(giallo) e massa(blu)
La massa delle casse è in comune con la massa dell'alimentazione del Vu-Meter
...e un like anche da Moreware :-D
Grazie infinite =)
Deduco anche che hai messo in comune il ground di alimentazione ed il negativo del segnale per risparmiare spazio. E' giusto?
Esatto :)
what maximum voltage that input pin can handle? im planning to see my DC motor PWM speed 25v with this. can it feed to input directly?
12 volt DC with this circuit
It's so tiny! 😄
If there was any way to fit a little microphone on there, it could be a cool wearable! haha.
Thanks! You're right, I should start building them with microphone, in order to make them completely autonomous
Good
thanks!
Where do you connect the aligator clips in the testing
Hi, VCC, GND, + (from amplifier out) and - from amolifier is in common with GND
My Honor, Sir,
I did a vu meter after a video you posted. Tied to the speaker, he goes with a succulent. My problem would be that the vu meter is at a maximum for a small volume. The signal to the vu meters should be reduced. The amplifier is 8w (small). Is it ok to put a poteciometer in or not because of impedance? And how erratic should be kilo ohm. Thank you very much I would be very honored.
Hi, it's very strange, try adding a 5K potentiometer on the input, it might solve the problem.
@@Stefano91ste Thank You Sir!
how do I go about buying these PCB's?
Hi, I have shared the gerber files for free, and I recommend using JLCPCB for purchasing PCBs (orderable by uploading my file as shown in each video) no one is authorized to sell my PCBs.
Bahut acchi complete kitne ki aaegi
सर मैं आपके vu metter को खरीदना चाहता हूं
Rate please
Can you put the diagram
Watch the video and you will find it :)
Where dot mode ?
Watch the video at 5:18
Kharidna 8 kitne
No yellow and red led in this video . Thumbnail is showing
Hi, yes but you can choose the bargraph you prefer, all green, all red, all blue, multicolored etc. The colors of the LEDs are independent fron the circuit.
can you give me one for free?😄
No, otherwise I should give one to everyone, maybe in the future if I can I will organize a give away :)