Music Reactive LED with BC547
ฝัง
- เผยแพร่เมื่อ 16 พ.ย. 2018
- Simple music reactive LED with one BC547 Transistor and microphone. In this video we're going to mount and test the circuit on breadboard.
Components:
● 1x BC547 NPN Transistor
● 1x LED (any color)
● 1x 68KΩ resistor
● 1x Microphone
Electric diagram at: 2:22
► More videos: / stefano91ste
WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
Music: Devotion - Vexento
Music (Test): Elektronomia - Energy [NCS Release]
► My equipment:
Panasonic HC-V180 (Main Camera)
iPhone 6 (Secondary Camera)
#ElectronicProjects #Electronic #MusicLED - วิทยาศาสตร์และเทคโนโลยี
NOTE: Condenser mics are polarized!!! If your circuit doesn't work, try turning the mic around the other way! I discovered this very late after pulling out much hair in frustration! :) The reason they are polarized is that they are like small capacitors. Hope that helps!
Nice and easy job, thanks on reminding us for such easy old schematic :)
These simple and interesting circuits are great
Thank you😁
so what matters is not volt but current right ? so i can use different volt but with the same current it will work fine
Hi i know u may not see this but can we use 9v battery
ottimo....mi dai sempre delle belle idee
Grazie:)
Good evening, dear friend, instead of the simple led, can I use a smd 12v led?
Hi Carlos, with this circuit no, it must be redesigned
thank you so much for the video.
why won't this work with (PN2222 )transistor ??
I read the data sheet but not making sense.
I apologize if this a dumb question ;/
Hi, that transistor is probably not equivalent with the BC547 NPN
@@Stefano91ste Thank you for the reply, yeah I read both of the data sheets and they vary in current.
Have a Great day!
Hey bro, first it worked very well and I don't know what happened ... The LED Kept glowing without sound and without even microphone ... Help me out
Hi, did you use the same components of my scheme?
A similar thing happened to me using a wrong type of transistor
Can this be done with a circuit bent keyboard, plugging the audio output where the mic should be?
Can I use TIP31C transistor, 150 Ohms resistor and 12v power supply instead?
Hi, not with this circuit, for TIP31 IC i have this circuit:
Circuit on Breadboard: th-cam.com/video/369s8KS82g4/w-d-xo.htmlsi=ZpGPNWKE4qSNsqio
PCB and Circuit: th-cam.com/video/3qZ3uA8hDmE/w-d-xo.htmlsi=UPWvl3SiXcpapOIe
In any video you can see the circuit diagram, or download PCB files from a link in video description
Can you please tell me the battery description
Hi, you can use a 3,7 volt battery for this circuit
great video!! can you help me out? my led light is on without sound. What could i have done wrong?
Hi, without having the circuit in my hands I can think of three causes:
1) Transistor damaged or incorrectly connected.
2) microphone incorrectly connected not respecting polarity.
3) some other component not working or short circuit.
Try to check these things out and let me know
@@Stefano91ste so i tried using my arduino instead of my 9v battery and for some reason it started working 😂 i have no idea why but thank you so much for responding and great video :)
@@ike8144 Well! thank you for appreciating my work :)
Hi! What is being amplified in the circuit and how?
Hi, in this circuit the transistor acts as a switch, controlled by the microphone capsule.
¡Buen experimento! Yo hice algo parecido con un emisor común clase A.
Gran :)
What was your power supply volt?
12V DC
Its Working
Can I use 100 k instead of 68 kilo ohm resistor
Hi, I think that with 100K the led will turn on too weak
can i use a difernt typ of tansistor
Any NPN in the family is fine BC546-BC547-BC548-BC549 and BC550. or any other transistor equivalent to the BC547.. However, consider that they may have a different gain and therefore the circuit may be more or less sensitive
@@Stefano91ste This worked great 👍 However, I need it to be much more sensitive, how do I achieve that?
A 10k resistor with a 3v batt works perfect.
will it work really
instead of mic can we use 3.5 jack
Yes, but the circuit should be modified
@@Stefano91ste can you do it bro please
Try with tip31 like in this my video: th-cam.com/video/369s8KS82g4/w-d-xo.html
You can use only one led :)
Can it works with 3.7v li-ion battery
Yes, but the light output is lower
can i use 100k variable resistor
It would be better not, you can only slightly vary the values of my scheme, 100K is too much.
how can i connect it with 250 volts
You cannot connect directly to the 230 Volts
Can we use more leds
No, for more LED you can use this circuit with TIP31 IC - th-cam.com/video/3qZ3uA8hDmE/w-d-xo.html
If this work only in 12v
Make a darlington man...if you want a decent amplificación...
I will do it in the future for circuits with many LEDs
@@Stefano91ste i mean, to make it more sensitive
its not working
Why not?
@@Stefano91ste i made the ditto copy of your project along with your video but mine is not working even i have swaped the ground and vcc and also i tried putting the transistor oppositely
please i need this project for my university subject help me
Hi, the scheme works and is very simple, the audio source must be very close to the microphone.
Are the microphone + and - correct?
Have you used a BC547 NPN transistor?