Make your own Low Budget Bluetooth Music System || OpAmp
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- Опубліковано 30 вер 2024
- Twitter: / greatscottlab
Facebook: / greatscottlab
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Amplifier Kit (affiliate links):
Amazon.de: amzn.to/1q77lZn
Aliexpress: s.click.aliexp...
Bluetooth Music receiver (affiliate links):
Amazon.de: amzn.to/1nVWXIa
Aliexpress :s.click.aliexp...
Parts list (affiliate links):
Aliexpress:
NE5534 circuit:
1xNE5534: s.click.aliexp...
3x100nF Capacitor, 1x22nF Capacitor: s.click.aliexp...
2x470µF Capacitor, 1x2200µF Capacitor: s.click.aliexp... s.click.aliexp...
1xBC637 NPN Transistor: s.click.aliexp...
1xBC640 PNP Transistor: s.click.aliexp...
3x100k Resistor, 1x10k Resistor, 1x100 Resistor, 1x47 Resistor: s.click.aliexp...
1xIC Socket:s.click.aliexp...
In this video I will show you how I combined an old speaker of mine with a cheap bluetooth receiver module. I made a small power amp for the speaker and put all the electronics in a hidden place. I hope you enjoy the video.
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod (incompetech.com)
Just found your channel - instant sub! :D Keep up the good work! Very clear and informative instructions.
DIY Perks Thanks a lot ! I like your videos as well. Especially your shard light looks very nice.
I'm a subscriber of both of ur channels I really like the vide of u and they innovative and creative I appreciate your work keep us inspiring more on DIYs
Hi guys. Wassup
By the way, if you want to power the bluetooth receiver from the same power source, using a ground loop isolator (1:1 transformer) between its output and the amp's input does the trick.
DIY Perks I know. But the part did not arrive in time to make it in the video.
DIY Perks HAhahah I was just writing a comment linking your video when I read your comment :) thumbs up to you both for the great videos.
Transformer coupling? Ooh you audiophile you! ;)
Or disconnect ground on one end of audio cable.
Simply use an optocoupler
I was trying to play my iPhone late the other night.
Mrs was in bed. So I put some wood brothers on while I read a book.
But it seemed really really distant.
So I turned it up.
It still sounded distant and echoey.
I shook my phone.
Stopped it. Started it.
So I tried a little bit of Iron Maiden.
Same deal.
It really stumped me for a minute.
Then it went really loud and quite again.
That's when I suddenly realised I'd left my phone connected to the bluetooth speaker … next to the bed! 😱
That's why my wife is now storming down the hall, like Darth bleedin Vader, to very angrily ask me if I knew what the f@*king time is.
True story.
Anyway.
I'm gonna make one of them.
Thanks. 👍🏻
Oh, this could have been me... Maybe I'd better reserve a gravestone somewhere...
GediSpock 😂😂😂 I've had the exact same experience but with automated lights.
Rip
pencil sharpener
I did the same thing as well. But my speaker was off ..
Cause I'm stupid.
Woah, thank you for the mention! Great video as always!
Afrotechmods Thanks!
Welcome
@lil Oofy you're welcome!
Flex tape
4:58 "it can give me 2.2 amps even though I only need 200" lol, an honest mistake, I know he meant 200 milliamps
5:02
"I will use this switch-mode power supply, which can give me 2.2 Amps"
"Even though I need *O N L Y 2 0 0* "
Amps?!?!
He probably meant 200mah lol
Milliamps
A microwave transformer will do the job ;)
Exactly what I was thinking lol
@@gel13a not a battery
If I knew electronics as good as this guy, I could build a space shuttle.
lol
This guy would make a space shuttle with a laser that can shoot stuff down.
+iPodiMaster you need to know aerodynamics first for that kind of project :P
Yes dude you are right this guys are beyond limit...real skill they have got...its good to see all these projects for hours at UA-cam but to implement in real life and make our own project list is not possible... at least I have not that music talent inspire of I am a electronic project freak :-(
Mistake that will be MUCH not MUSIC.... lol
@GreatScott!
when I inserted the battery and speakers battery power source usb speakers made it sound interference
how to eliminate the noise in the circuit
thanks
sorry about the article because I come from Vietnam using google translate
well i have a real ceiling not a fake one
+Onelas lol
mine is 100% concrete ( and Clay)
Fan Boy Lokl 😇
Think about all the women that have to use glass cutters
I have a false one
I wish I could do and know all this shit :(
Same. :(
+Juan Morales You *can* know all this shit. It takes time and practice.
True, man.
bro. get online thru phone. hitup IBSTRUCTABLES. COM. ez street.... 20 bucks for equipment @swap meet. get busy kud!!! :)
I got an easy way to get the exact same result exept portable and can also be done by connected cord
buy a speaker
My brain just exploded....
swaneye34 i think he died
ur ded
reason: brain exploded
respawn quit game
His famous quote “because I’m such a Genius” 😂😂😂
Cool, but you could have used the TDA 7377, simpler and more powerful.
cool, I like DIY projects, and you include problems and mistakes along the way which makes you honest, I do that also in my videos but sometimes I edit them, lol. i subbed.
What I really like about your videos is that you show us the experimentation you went through and for me there is more to learn from that than just a step by step, start to finish solution! Would have been nice if you could have got the receiver and the amp on the same supply as a solution to that may have solved (or at least helped to solve) one that I have.
Fabrizio Lungo You can get rid of the distortions by adding a 1:1 transformer between the audio signal and the audio input of the amp.
GreatScott! Ahhh.... That's what I am currently doing. I was hoping there would be a solution on the power supply side of things but you can't really have a 1:1 transformer for the DC voltage. Using two transformers from the AC side is what you have done here to get the isolation. Maybe a 20:1 transformer (for 240V down to 12V) connected to a 1:1 transformer before any sort of bridge rectifier might work?
+GreatScott! Please explain how I can use a 1:1 transformer to get rid of the distortions! How to install it?
You need 200A and you choose a 2.2A?
Just kidding I'm not an idiot.
Ws2812B I commented this before you and you took my comment and credit for it. You b####
what
200A
are you kidding me
haha
@@TypicalNerds you brik it isnt hard to find that, i was about to comment this typo too
Listen up +GreatScott! , fellow german here.
I hate to be the smart ass all the taime but when it comes to security, well here goes my rant.
That power supply is not rated for moist enviroments. There are enough cheap ass IP67 rated supply modules out there.
Why am i so concerned? Well you are instructing people on how to handle AC power. But that job is not done with just turnig all off and then back on again.
Not all countries have regulations concerning protective circuit breaker like an RCD/FI.
And to the rest out there: There is no need to be afraid of electricity. But security goes first ...or not if you like the smell of BBQ in your bathroom ;-)
Anyways, i enjoy your videos and subscribed.
If you need information about electrical safety, feel free to contact me.
DasIllu Why is my ceiling a moist area? If that would be true, I would have more problems than a lack in security.
GreatScott! Warm Air usually rises up. And warm air has a lot more capacity to transport moisture. (ref. relative humidity vs. absolute humidity). So when you for example take a shower, you have a very moist air seeking it's way through any hole. Ones arrived in that space between concrete and ceiling it'll propably condense at the first thing that is colder than it's surroundings.
Guess what... Slow temperature changing metals in your power supply. Once enough water accumulated, it will start to flow according to surface tension etc and maybe short out or change resistance of some components needed to regulate the whole thing.
While there is a bunch of other reasons why you shouldn't do it this way (i.e. VDE) this is one of the major problems.
This might work without any problems for you. But what about a family of 4-5 people all showering in the morning when the roof above is still cold?
See, just because it works for you doesn't mean it is safe for all the people you adress in your videos.
Felt the need to point that out. Those 'stupid' rules are there for saving lifes. For unexpected circumstances too often cost lifes.
regards from Saarbrücken
DasIllu
Sure
GreatScott! I used to work as an electrician in explosive enviroments and maybe i am a bit biased.
But i also learned how simple circuits may go rogue on you once they are exposed to conditions they are not designed for.
And to just put some more VDE in. If you are to power down a whole room, it is not done with confirming that the lights are out and the hairdryer doesn't work anymore for that you can accomplish by breaking just the neutral wire and still have potentially deadly 230 or 110 Volts.
Sometimes it isn't even the electric shock that is the most harmful thing. Just getting startled enough to fall off a ladder can harm you as well. I encountered such situations several times even when i was most careful about security
GreatScott!
Wich soldering iron are you using?
Don't bother turning off the power in North America. Its shitty. Only 110v.
Elites Engineering lol
***** Its okay, it does not hurt, unlike 220v in other countries.
Elites Engineering I don't know too much about this kind of stuff so I might be wrong, but I'm pretty sure its the amps that can kill you.
Arseny97 Yeah its the amps, but its okay, I felt 110, and 220. 110 tickles, 220 hurts.
Elites Engineering Dont try 415v coz it killed me, luckily the paramedics shocked me back to life, 240v is just a tickle now after playing with too many volts in the workshop lol,
What kind of software did you use to make the perfboard layout?
Lochmaster
This is cool but honestly from a main electrical stand point you should of installed a electrical octagon box in the ceiling (a retro one so you can install it with just a hole like you made) because atm it seems like you have your mains attached with a open terminal which could start a fire, would fail an electrical inspection and could potentially hurt someone that is rooting around up there in the future.
Experience to back this up is i'm a electrician in Canada and electrical code dictates that you need to have a bonded certified electrical box housing anything above 15v. Anything under 15v can be free aired.
When I saw that I thought the same thing. All connections to and splices in main household power wiring *must* be in a junction box.
AnimosityGamers fun fact:
Hes german and should know it better ;)
Jk you're right as this is in a bathroom and the moisture coukd get up in there. Not the best solution...
Random viewers trying to do the same, unaware they are breaking the law in many countries and also risking killing themselves in house fires... I believe it is careless and irresponsible to publish videos like these without any form of big warning or disclaimer.
4:37
"The brown 12V wire connects to the upper terminal (you were connecting the blue wire)" and "the blue ground wire connects to the upper terminal (you were connecting the brown wire)". Isn't it a bit WEIRD?
Our voltage is only 220VAC and not 230VAC so I am safe!
Thank you sir for this video. It's really educational. I know nothing about electronics, but i like it, so i'll give my best to learn as much as i can from your vids. I hope one day i'll make my own speakers...I just don't know how to calculate like if i wanna more powered speakers (in watts), should i use amplifier with more power...I'm not smart for that shit...
If you are smart enough to use google you can learn anything about electronics on line.
Golden Saying
"Google is your friend"
Thanks to IB Physics... I understood shit here 👌👌👌
Nope... nevermind. I got lost...
Its not too hard to follow, he just built a simple amp that boosts the low ac voltage coming from the bluetooth thing.
Make a audio amplifier based on transistors
You said you needed 200 amps! what?!
I know you meant 200mA :)
+Atli1999 200 amps... wow this would be 46000 watts, man I think you could power all your projects at once with this power supply XD
Love this guy's attitude, "because I am a genius!".
That's clear sarcasm!! Cause this guy is real sarcastic. :)
Russians are like that
@@_baller he's German
Hi Scott! I saw that you didn't use any capacitor to maximize the gain of the LM386. As you can see at 2:48, if you'd placed a 10 uF capacitor between Pin 1 and Pin 8 you would go 26 dB to 46 dB. Isn't that enough to improve the quality of the sound? Thanks man, I love your videos
***** It improves the amplification, but not the overall quality.
Das geht doch viel einfacher. Da gibt es doch kleine Verstärkerplatinen die ein BT Modul bereits drauf haben.
As you say at the end of each video "Stay Creative" I personally feel that being creative is not the problem. Becoming creative generates passion, ♡ and glory. Being creative (construction) -- is far better than (destruction!!!) I have concluded that it should be a person's given right to do whatever they please, do whatever you love as long as it does not negatively affect another person!!!
☆Long live love, passion and creativity!☆
This beautiful circle!
Rly? 230V can kill you? I'm still alive............ (damn i hate my life)
"pretty high quality speaker" :D
Nice video! I have a little question: if you want to listen the two channels (left and right) of what the player is playing, you can just solder the two channels on the jack and then connect in to the amplifier! Thanks!
dude your videos are fricking awsome but one problem i don't know anything you're talking about with the amp ohm and how you solder everything
,
+jean tsai lol
i have this same ground loop problem with my home made boom box. it can get annoying
bro your video is soo helpfull tnx for the you are amzing, bro please tell me which software you use for stripboard design ??
+Saad Wazir Lochmaster
tnx brother :)
+GreatScott! NICE VID!!! I saw a website that you use and it said let's make then an input box , which site is that??
+Games4life Inscructables is that website
great skills, unfortunately eBay this days sells things so cheap it would come up to half price of what you spend and do the job hassle free
2:15 PORTUGAL !
Yahhhhy PORTUGAL É O MELHOR CARALHO
Vim aqui ver se este comment existia hahaha
but my ceiling is concrete
Is there an electric code for shoving transformers behind dry walls?
Yeah it's called go fuck yourself.
The IP rating for that shock box is fine enough to stick in drywalls
+GreatScott! You inspired me to build my own version of this using a KRC-86b V4.0 Bluetooth module and a TDA2003 10w Amp chip I salvaged from an old CB radio. In this build you mentioned you were getting interference/noise coming from the 7805 IC sharing source current. How can this problem get solved within the circuit?... At first I put my Bluetooth module in some old computer speakers, but they had a transformer inside them. They had terrible noise, so I ditched them in favor of building a circuit myself with a "wall wort" to separate the 120vac/12vdc power supply. My Bluetooth module is running off a 7805 regulator like you had done. I'm not getting as much noise as you appear to have gotten, but I do hear some light, constant, background noise, and I hear digital chatter randomly coming from my phone connection (like a subtle set of chirps and beeps that sound like R2D2 on drugs). How can I eliminate that kind of noise within a single DC current source? Anyone? :)
any update on this?
many capacitors. but with high capacitance.
Nice phone Wallpaper.
Or you can get an "OTG" cable and plug one end into the bluetooth thumbnail and the other end into the the speaker and you just pair it and you got a new speaker ! :)
Why would you want that in your bathroom???? 😝😂👍🏻
Music in shower?
+NeXTSTORMING with the steam of the shower it could rust the metal
ItZz JoK3rZz the metal is galvanised
+ItZz JoK3rZz I would not put this right above the shower
To become the best singer of your bathroom!
2:15 That NE5534 came from Texas Tnstruments, from my beautifull country, PORTUGAL!!!!!
bacalhau bacahau
You're so genius u broke ur receiver lol..
I would have used a TDA2003. It works with 12VDC and outputs 10W also very cheap.
+Pedro Alvarez or TDA2030 vs TDA2050, only difference is power rating
Are you Portuguese?
+MyBadjoras German
oh ok one of the chips sayed portugal :p so i assumed
+GreatScott! Hey, great project video! I wanted to ask that the speaker u used, was it a 2 way speaker or a 3way speaker?
And u added a transistor based post amp to ur op amp, I'd there any way it could be made by MOSFETs for more power?
Also I'm building my own portable speaker, my amplifier ic is a cs 6283cs, when the sound is paused , there is some noise still coming out of the speaker, how do I remove that noise so that when I pause the sound, there is no unnecessary noise?
+MyBadjoras Mesmoo (samee)
+MyBadjoras ahahahha ^^ Chips are made all over the world and arent location dependent at all. Your TV has chips from probably a minimum of 5 countries :}
wrong 230 volts can not kill you
it is the amps that can kill you
if it is close to the heart
99% of the world cannot do this... only amarika has stupid plated roofs
+ESHouten I live in Germany.
+TheFruitsClan You got concrete bathroom ceiling? Because here in Indonesia, most bathroom ceiling are either wood or drywall.
+GreatScott! 230 arent very dangerous in this case because the Rcd would get out
Jens petre It's still dangerous, you should depend your life on some electrical device, because those can fail.
Amarika lol
Hey, could you tell me more about the distortion when the receiver shares the same power supply?
I'm making a portable version of this speaker so i only have one battery, any ideas? (possibly cheap ones :D)
thanks alot :D
I had also a power issue with an TDA7297 amp I made when I topped it, even with an 12V 3A power supply. I used the same solution you used and it worked marvelous. Thank you for all the knowledge you gave to us all!
could you find a way to remove the noise without an external power supply?
No way of getting rid of noise without using an external power supply. And no, you can't have your cake and eat it
I expected the sound quality from one of these cheap receivers would not be impressive ... but didn't expected it to be that bad. Can anybody recommend something with a bit better sound quality.
Who spends *that* much time in their bathroom that they install a bluetooth speaker in it?
So, I take it showering and bathing are new concepts to you?
No but this seems pointless... because ya know, you can totally hear some shitty speaker over the sound of a shower pouring over your head. And at 5:22 you can see the translucent door of a *stand up shower stall* in the background, so there's no bathing going on here. Even in general, who the fuck bathes anyways?
The Japanese bathe.
That's like what, 2% of the world, yeah?
Jack Duno when you are up to your elbows in gunge all day, a good soak listening to good tunes is just what you need
whats the music you used at 0:28 ?
Had to watch the formula part like 9 times to get it. God I feel so dumb I have never dealt with electronics before haha
Or just bring a small, portable boom-box into your bathroom.
AWESOME !! :) i love that design ..
Hey, cool Video! (Du kannst ja auch deuscht oder ? :D )
Undzwar reicht da wirklich die Ausgangsleistung für den immerhin dafür etwas großen Lautsprecher aus? Also liefert die Transistorstufe hinter dem Ne555 (oder den du halt verwendet hattest) genug leistung?
_________________
grüße von jophy
this channel is fucking amazing!!
Could steam coming from a shower mess it up?
Still works to this day without a problem. So probably not.
+GreatScott! Question is if it would create moisture inside of your ceiling which then leads to a bunch of other issues
You can put nylon over it...You don't lose loudness, and yet you protect it from steam and moisture...
PLEASE HELP!!! PLEASE PLEASE!!!
I am building a portable bluetooth speaker with the same bluetooth module. The problem is that i need to connect the module with the same power supply as the amplifier. As a result there is the same horrible sound as you encounter is coming from the speaker.
Is there any way to fix this without using a separate power supply??
I am using the following
TP4056
XL6009
pam8403
The bluetooth module.
PLEASE HELP!!! ANY HELP FROM ANYONE IS APPRECIATED.
4:57 Spelling mistake? You said you needed 200A but I'm sure you need 200W. Besides the fact that the speaker can't even handle the 200W...
Edit: You probably meant 200mV, just an honest mistake.
Sir I think your DIY PROJECT on this Bluetooth speaker is Nice... I have beach cruiser bike with motor... and I need your no how to build me a system... I have the idea just not the no how....will compensate of course.....THANKS
I got a headache LOL .... i got 10 out of a 100 for maths at school you people fascinate me LOVED watching and listening to your video though ..................... Cheers
Macca
Funny video, Holland? Or Germany? Good information, just what I was looking for, I think. I'm trying to run my android through a Pioneer VSX-D307 receiver, 100 watts, and push those 100 watts though 2 Fisher STV-753 100 watt speakers. Do you think that possible? And achieving quality sound? Without burning my house down? Thanks
You can buy a Tripath amp, the LP-808 for $11 (amazon: B005YHC4LW) , why even bother making this?
It's a 12V, All you need is a resistor, in parallel with the amp, for the bluetooth (one 12V straight to the amp, the second in parallel to this, with a resistor to lower the voltage to 5V, going to the bluetooth; or, get a dual 12/5V charger amp).
Don't try this in the USA without knowledge of the 120 volt circuitry. National Electrical Code has all the rules for American house wiring, violating these rules have serious consequences, including fires, condemnation of property and jail time. Cool video, this guy is very tecky making this simple for us newbys. Thanks!
Or just get this $20 amp, and connect it straight to a single 12V 3A adaptor; plug your bluetooth directly in it, and play!
20W is pretty ok for ceiling speakers upto 6in.
Amazon: B00721Z1AE .
www.amazon.com/Lepai-LP-A68-Digital-Amplifier-Remote/dp/B00721Z1AE/
I built the 5534 amp a year ago. It wouldn't work for me. When I rewired for an LM358 (I had some, I just wanted to see if the 5534 was bad) it worked fine. The NE5534 chips were ordered from China, though I've never had an issue before. Fast forward to today. I had to get a part from Mouser to fix my furnace, and in order to be more comfortable with the massive shipping cost I bought some 5534s. This circuit works great. All 10 of the ones from China don't do anything at all. It makes me wonder if they were rebadged with the wrong code.
To anyone who builds this amp: be careful - Those transistors can get very hot very quickly. I have some really large transistors I'm going to use for whichever amp board design I choose. These BC6xx transistors are rated for 1 amp of current, and at moderate volume I was pulling around 500mA, which caused quite a lot of heat, but shouldn't cause any thermal runaway. There's a UA-cam channel called Simply Put who built a small amplifier and used a bunch of transistors to spread the current load and keep the heat down instead of buying expensive large transistors. I think he used eight or ten 2N3904/3906 transistors and it seemed to work well. I may try this too since I have a couple hundred of them and need to use them up.
So I am wanting to make a Bluetooth speaker using the TDA7492 50 W + 50 W dual BTL class-D amplifier and a some automotive 2 way speakers. I also have 7 samsung icr18650-30a batteries that are 3.7v in series thats 25.9v and 19,000mah. So my question is what wall power adapter should I use to power and recharge the system? Also what would be the rough battery run time?
please show how to make FM radio receivever and also I like your videos..
THANK You for sharing with us Your work , witch is GREAT btw .
I second to these opinion : "Nidhin David - It lacks the essence of DIY....Buying is not making, Everyone can buy but everyone cannot make!! " .
I know , now there are a variety of gadgets on the market , but these is a good practice for those ho start on electronics , and frankly I feel Great when I do something with my own hands and is working .
Be Well and stay Safe
let me clarify some thing....Volts Do not kill you its Amps that WILL kill you it takes only One amp to kill some one depending on its path through the body. theoretically speaking you could have 1 volt and 5 amps. Amp's are the current or amount of power flowing through a wire or cable. Watts / Volts = Amps say you have 50 watts and you have 10 volts you would have 5 amps (50w / 10v = 5a) (5w / 1v = 5a)
bytheway u r a born talent, your skills of ur previous births helping u
I have a wired speaker that uses USB and 3.5mm jack.
Can I connect the 3.5mm cable (from speaker) to the 3.5mm hole? My speaker doesn't have a USB port
Which I see a tiny bit of aliexpress user does which one do I choose?
I have a wired speaker that uses USB and 3.5mm jack.
Can I connect the 3.5mm cable (from speaker) to the 3.5mm hole? My speaker doesn't have a USB port
Which I see a tiny bit of aliexpress user does which one do I choose?
I'd avoid the H-163 if you can. I plugged some earphones(RP-HJE125E-K) into mine to test it out and it's very tinny with no low end. Sounds so bad.
Anyone know of any decent Bluetooth audio receivers?
Would it be hard to solder on your own 3.5mm jack onto one of the eBay Bluetooth amp boards?
Thanks.
Scott, could you provide a photo on how exactly did you connect that amplifier on a breadboard? For me it only works when I use the basic NE5534 circuit, when I try to introduce two transistors it either doesn't work or I burn one of the transistors. Local electronics store also didn't have BC637 unit, so I'm using BC556B - it has a different emitter/base/collector arrangement, which also adds to the confusion. Help please :/
Can you send me the schematic that you made, please? I want to know why the 7805 doesn't work. I'm using a 12V adapter for my audio amplifier, and it's inconvenient using 2 adapters (1 for the USB, 1 for the amplifier). Your video inspired me to make one :D thank you!!!
You shut use PAM8403 amplifier,it is class D[90% efficient] ,2x3W channel,5V/1A supply,sound amazing [like 30W] and it is very tiny without components.Also it is cheap.
I know this video is 2 years old, but I think this whole thing could be simplified by just using one of those cheap bluetooth amplifier boards that you can find on amazon and ebay. Of course, one wouldn't be building up an amp like in the video, but it's a pretty cost effective solution, considering they sell for like 10-15$.
Hey sir, I have a idea! can we make an arduino home assistant? Which means, we make a thing with arduino that takes our voice to our phone and takes the audio that is produced by phone to a speaker via Bluetooth(hc-05).our phone works as the SERVER. when we ask "what is the whether", the mics should pick up our voice and sent it to our phone, then our phone executes it and sents an audio input which is then transferred to our speakers. and in our phone we can use a personal assistant app called alexa. it automatically takes in our commands when we say "HEY ALEXA" without pressing any button or switches. wait but first let me know is it a dumb idea or a good. it will be great if you make a video in that. Like if you agree.....
On the topic of "so many amplifier types": *Class-K amplifiers*
Basically just an AB and D amplifier working together - AB gets the audio signal, and drives it out nearly directly
D helps out with a lot of the higher-power driving, to reduce the amount of current that AB has to source or sink.
+GreatScott!
Thanks for awsome project. i just have a query.Why did u connect Aux wire when u are give an wireless(bluetooth) input.Hoping for positive reply.Thanks
´why this noise (aka ground loop) happens?! i m searching how to solve this problem for a long time, but i couln'd find any efficient solution. i reduced the noise using 18650 batteries insted of regular voltage transformer, but i still listening a small noise when i pause the music or changing the tracks. please, make a video explaining the ground loop issue and how to solve it! please!
Hey yeah that bluetooth device and amp power will always create a feedback loop running off of same power it sucks and is annoying. I was trying to go cheap myself and try the same thing but not for a bathroom(portable). Because of that problem I tossed it aside. Anyways I found a good multipurpose board for only $12. Solved all the problems and made it smaller and be able to charge the battery. Even allows me to use the bluetooth functions for phone. So instead of having multi-part system and cheap, you just spend a few more $ but still "cheap" and not worry of the hassle.
What is AudioLeft and AudioRight on schematic diagram of NE5534. I can't see any clear representation of it on your breadboard . Breadboard was messy couldn't identify it .
Hello! I have 2 speakers: 4 ohm 3w and i want to make a bluetooth system, portable. What amp do i should use? And what circuit? I have an IC named YC2822 or something like that, never heard about it and on internet is unknown. Thank you!
Hi, you got lucky with your Bluetooth receiver. I ordered three pieces and every one made a loud buzzing whenever no music is played, for example between songs or on pause.
Bin zwar deutsch aber du bevorzugst ja sicherlich Englisch :-D
Or you can always use this simple setup and you will have stereo BT receiver.
www.ebay.com/itm/181761468737?rmvSB=true
And power adapter www.ebay.com/itm/AC-110-220V-12V-1A-Switch-Power-Driver-Adapter-for-LED-Strip-Light-/291508091516?hash=item43df3c7a7c
Ebay "bluetooth amplifer board" . This project is dead easy. If you dont have a false ceiling, it's much easier ! Attach two old speakers to the wall and connect it all up. Voila, boombox bathroom, was my solution.
I have built my own battery Powert bluetooth speaker .
IT is two old PC speakers I have glued together with screws in one speaker 's amplifier located and on-off switch in the other speaker is Bluetooth and battery.
there are no wires and see and it works well , I also had a problem with noise but I solved with a coil in series with the power cable to the bluetooth device.
lithium battery 11.1v 3,3Ah
2x12 watt amplifier is
I will make a Bluetooth speaker on my own Channel
ua-cam.com/channels/2_9bvhsDbhGlhDkdtKt43g.html
@GreatScott! Using your light load cables for anything other than lighting is not a good idea. I'm not sure about specifications in Germany, but it's out of code to do that in the UK. It'll work, but depending on your RCD, there could be problems during inspections and testing.
I hate it when people call USB : USB bus. Like isn't that redundant?? Universal Serial Bus.. bus...
You didn't but I felt like saying it.
i recently build subwoofer with 30w + 30w amplifier and i have a big problem. I hear Big distortions! If i don't do anything i hear this sound:" tututututututututrututututututu." And if i turn my mobile data on my phone on i hear shhhhshshshssshhhhsshhhs sound coming from speaker and sometimes when i listen to music and use one of my motors near speaker i hear sound of motor coming trough speaker. i think that motors magnetic field somehow interupts speaker system. If you know how to fix this problem please comment! Thanks!
OMG thank you for this video. It helped me understand why my external bluetooth device was making noise when I plugged it into my cigarette lighter and onto my amp. Then I went and took one of those external batteries and I was able to run power to my device without the feedback. Now my only question is, what can I do to charge my device at the same time while I am driving? Do you have any suggestions? I will be taking this to my audio guy but I don't want him ripping me off or even worse destroying my vehicle!