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The first BMS you were going to use is not only 5s. It can be modified from 3s-5s. In that BMS the minus terminal was shorted to the B1 with a 0 ohm resistor, that means it is 4S. If you want to use it as 3s then you need to short the minus, B1 and B2
To be honest you should focus more into the quality of the product. Use proper mounts to hold the battery pack without using hot glue. And please don’t use solder iron to make holes in the plastic. That is not professional. Solder iron is used for soldering not for drilling. Next time please use a drill machine. And also my point of view, I think it is a bad idea to use that wool material like you showed in the video. Even though you use a BMS there might have a chance, things to go bad (like a fire). Its better if you can isolate wool from the battery. Other than that, this is a good video.
Yeah I might make some as well in the future. But it will have to be a maybe, since I don't have a spot welder or 3D printer (this version), nor do I have a CNC tool (DIY Perks version).
@@TheSpotify95 You really don’t need any of those. You can find a plethora of small speaker boxes online to download and cutout by hand. They don’t have to be fancy and curved, they can just be cubes or rectangles. Heck, you could design your own, just make sure you make the box the right size for the speaker, then cut it out by and and glue it together. Also, just get an 18650 battery holder and you eliminate the spot welder
You can solve the Noise Interference when using same battery with a ground loop isolator like B0505S-1W DC-DC. and also i would suggest you add a switch between the earbuds and amplifier to interrupt the annoying voice prompt at startup.
Really cool idea, I think I will make one for myself. Some problems/improvements I see for others: 1) Your midrange is not mechanically isolated from the woofer. Might want make an internal enclosure inside. Could also damage them otherwise. Plus you could be losing some bass right now. 2) I could be wrong but I think you might lose some response due to polarize caps. You could put two eletroytic caps in series in + - - + configuration, or invest in more expensive non-polarized caps. 3) Resistor-divider network from main battery for zero noise power to the earbuds since they take very little power anyway (less than led). 4) Case could be reinforced with epoxy+sand(1part-epoxy-10-part-sand) which is an amazing acoustic barrier, and can make very deep base possible if case is designed for some good resonance frequency. 5) Could add a small piezo or coil based tweeter for proper high frequencies, or maybe a smaller midrange which usually can perform better at higher frequencies.
always amazing elecronoobs.. so far this is the best arduino diy channel i have seen.. good job (we are still waiting for the new smartwatch version :D )
11:22 Or maybe u can connect negative from earbuds to amplifier negative power input and positive from earbuds to positive from first li-ion battery from the bms. And to remove push buttons, u can program 2 attiny85 / attiny 13a to send a pulse to optocouplers(which is connected instead push switches), but just for 500ms at the power on. I hope that's helpful! :) BTW: This is a great and interesting project.
I think that this is a great project. I think that the speakers are out of phase. The easy way to know is that if one speaker sounds "so" loud and the other speaker by itself also sounds "so " loud it should sound like just over 2 speakers and thus be "soso" loud. But this does not take away from the excellent job you did. Thanks.
How do you charge the forth cell that is powering the airbud? I know that 18650 would last a few weeks of playing but still? Is there a 5v charging module after a step down? There are 3sBMS charges with 5v inputs available. I wonder if I connect that in series with a dedicated charger for a single cell, would that also create a ground loop like it did when you powered the earbud and the amp from the 4s pack? maybe i'll add a switch or install two separate usb-c charging ports. I saw many videos where the get away with a single battery for both bluetooth and the amp using some 4 pin module.
The first BMS you were going to use is not only 5s. It can be modified from 3s-5s. In that BMS the minus terminal was shorted to the B1 with a 0 ohm resistor, that means it is 4S. If you want to use it as 3s then you need to short the minus, B1 and B2
Bro use a B0505s along with a 12v to 5v voltage regulator. It will completely eliminate the ground-loop noice and the noice from the buck convertor will also get eliminated.
Beautiful result ! I finished a mono speaker based on a tda2030 yesterday , I used speakers from an old TV and for the power I've used an atx psu that was laying around , the sound isn't too bad when it's working but if it's not plugged in the noise is horrible. I should have made a proper power supply for it .
Great tutorial! I know nothing about electronics and can't find how the push button to power on the earbuds was wired. Can anyone help with this please? Many thanks.
You can use isolated buck converter instead of using tou seprated batteries.and is it produse nice sound without tweeter?and is it possible to use 15 wat driver connected to 30 wat amplifier?
Brilliant presentation my friend, clear, precise and very enjoyable. I loved the banana for the visible scale representation by the way.😂 Oh the Time travel box, let's meet up in 3045 and I'll get you a coffee made freshly from my replicator. 😂
hi can you explain the resistors used in the crossovers because i can't find the 1 ohm and 5 ohm resistors mentioned in your website , if you can give me the link for individual resistor rather than the whole set it would be helpful thanks
I did the same with less parts and better speakers at 50 watts at 4 ohms. Only now thanks that we think the same I also thought of Bluetooth headset as the source and separate amplifier. At 4.5 volts and yes direct to the input on the amplifier. The amplifier is 12 volt model with a micro class d chip. Cost was less than one hundred dollars. And I put two high quality crossovers that make the sound very good.
Hang on did the earbud change color. But still awesome work. What’s charging the single Li-ion cell. I’m guessing that with the buck converter you had a negative feedback loop?
I've made these but when i increase the volume I'm getting the battery beep sound for battery low, even though I've fully caherged the battery for usage, please help me out with this issue 🙏🙏🙏 Please reply.
hey there can i know how can i connect subwoofer for that....i mean for subwoofer the both channel has to be mixed and then amplified ......how this process will happen....please make a video on that
Hey, what is that chip inside that pair of bluetooth headphone you used, seems a quite generic chinese chip with a 'pi' like marking on it... didn't find any datasheet tho...
The circiut on this is so similar to the circuit I used on my diy 60w amp But mine is only mono and uses a bluetooth receiver with a 7segment display Anyways great video as always
Hii electronoobs bro You have 3lakhs + subscribers but You upload a video 1 day ago 5.5k views only I know you put more hard work for making videos but you have not get much more views but one thing I support your channel long time Your projects are really nice i follow you thanks😊🙂
Excellent video! Can this same method be applied to earmuff hearing protection, but on a smaller scale? Something like a DIY true wireless Bluetooth 3M Worktunes headset? An "over-the-earbud" so to speak. They would be used as incognito headphones with no exposed wires. I'm a complete idiot when it comes to this sort of thing, so any advice would be greatly appreciated.
If you have a place to put the Bluetooth/amp board, then yes. If you don’t need the AM/FM tuner then I’m sure a weaker BT board will fit somewhere in there. You’d also need to check what kind of power the BT board needs to see if the batteries you already have will suffice.
If I understand correctly, you already have wires ran to the speaker drivers and a potential power supply, so really you just need the BT board/module. It should be able to power the speAker drivers by itself without an amplifier, so you’d need to find a BT module/amp that would fit in the ear muffs.
Isn't this prone to distortions due to the fact you're taking the relatively low impedance signal from the earbuds and inject them into the amplifier directly?
when you connected bluetooth module to buck converter, ground loop was creating and you could hear noise. You could use dc-dc isolating converter (for example B0505S-1W) for bluetooth power and get rid of it
if you're using bluetooth chips from earbuds with touch buttons, let me save you the trouble: To extend the button's functionality to an external housing all you need to do is solder a wire to the conductive bits of the button part on the chip, and that entire wire will act as a button
The reason I couldn't see how to wire in a start switch was because I had fixed the buds to the board in the speaker already. Opened up the bud and saw straight away that all you need to do is solder a wire either side of the push button.
it would be interesting to add 2 more pogo pins on the earbuds and make them dockable on the speaker itself !!! that way you can still pick them up and put them in your ears or dock them on the speakers and have big boi sounds from the speakers
You don't make it clear if the buck regulator noise is due to the switching or a ground loop. If the former you could just replace the buck regulator with a linear... that headphone receiver is going to draw a tiny current.
I'm surprised you didn't house a stereo bluetooth receiver in one speaker, and have it play one channel on the speaker, and transmit audio with some sort of wireless audio transmitter to the other speaker. I guess hacking the earbuds is cheaper, though. I'm surprised there was a soic-8 IC in the earbuds.
Arduino Course LEVEL 2 (Spanish): bit.ly/2ZNWgqy
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The first BMS you were going to use is not only 5s. It can be modified from 3s-5s. In that BMS the minus terminal was shorted to the B1 with a 0 ohm resistor, that means it is 4S. If you want to use it as 3s then you need to short the minus, B1 and B2
@@moya9450 really? I guess since I never used it, i didn't knew that. Thank you!
@@ELECTRONOOBS Yeah, that BMS is a very good one and can draw 100A(manufacturer claim). This video was very helpful btw.
To be honest you should focus more into the quality of the product. Use proper mounts to hold the battery pack without using hot glue. And please don’t use solder iron to make holes in the plastic. That is not professional. Solder iron is used for soldering not for drilling. Next time please use a drill machine. And also my point of view, I think it is a bad idea to use that wool material like you showed in the video. Even though you use a BMS there might have a chance, things to go bad (like a fire). Its better if you can isolate wool from the battery.
Other than that, this is a good video.
I did this too from diy perks and it is soooo nice to have stereo wireless speakers. Its literally something Ive wanted since i was a kid
Yeah I might make some as well in the future. But it will have to be a maybe, since I don't have a spot welder or 3D printer (this version), nor do I have a CNC tool (DIY Perks version).
@@TheSpotify95 You really don’t need any of those. You can find a plethora of small speaker boxes online to download and cutout by hand. They don’t have to be fancy and curved, they can just be cubes or rectangles. Heck, you could design your own, just make sure you make the box the right size for the speaker, then cut it out by and and glue it together. Also, just get an 18650 battery holder and you eliminate the spot welder
DIY PERKS 😂
Expecting this comment 😂
@@souravchakraborty4571 just for fun bro.
😂
😂👍
Exactly 😂😂
You can solve the Noise Interference when using same battery with a ground loop isolator like B0505S-1W DC-DC. and also i would suggest you add a switch between the earbuds and amplifier to interrupt the annoying voice prompt at startup.
I actually like that voice.
Definition of being underrated
Really cool idea, I think I will make one for myself. Some problems/improvements I see for others:
1) Your midrange is not mechanically isolated from the woofer. Might want make an internal enclosure inside. Could also damage them otherwise. Plus you could be losing some bass right now.
2) I could be wrong but I think you might lose some response due to polarize caps. You could put two eletroytic caps in series in + - - + configuration, or invest in more expensive non-polarized caps.
3) Resistor-divider network from main battery for zero noise power to the earbuds since they take very little power anyway (less than led).
4) Case could be reinforced with epoxy+sand(1part-epoxy-10-part-sand) which is an amazing acoustic barrier, and can make very deep base possible if case is designed for some good resonance frequency.
5) Could add a small piezo or coil based tweeter for proper high frequencies, or maybe a smaller midrange which usually can perform better at higher frequencies.
Yes, actually I'm not that good with audio, enclosures and interference so thank you very much for all the tips :)
always amazing elecronoobs.. so far this is the best arduino diy channel i have seen.. good job (we are still waiting for the new smartwatch version :D )
Best video of DIY TWS Speaker I have found so far. Thanks a lot. From Bangladesh.
Great ingenuity ! Very cool video !
11:22 Or maybe u can connect negative from earbuds to amplifier negative power input and positive from earbuds to positive from first li-ion battery from the bms.
And to remove push buttons, u can program 2 attiny85 / attiny 13a to send a pulse to optocouplers(which is connected instead push switches), but just for 500ms at the power on.
I hope that's helpful! :)
BTW: This is a great and interesting project.
Cool project. Keep it up. And love your new website🙂
The best. Yes it’s compact but you can make it more fine and smaller.
Great project👍, a lot of people are interested in these types of projects.
Sir what is the value of resistor and Capacitor of low or high pass filter
Great Video :D
Did you calculated the encolsure dimensions for the area inside with all the components ??
I did not...
@@ELECTRONOOBS oh ok.
Every video of yours is worth watching...
Thank you. Is comments like this that keep me motivated
This channel is gonna make me a genius.
Could You share which IC was in this earphones? Did they had implemented some DSP which makes sound to fit more to small earphones?
Its some Zuhai Jieli chip idk the number but its a generic JL bluetooth chip those are in alot of (cheap) bluethoot speakers
Great video thank you for sharing
I think that this is a great project. I think that the speakers are out of phase. The easy way to know is that if one speaker sounds "so" loud and the other speaker by itself also sounds "so " loud it should sound like just over 2 speakers and thus be "soso" loud. But this does not take away from the excellent job you did. Thanks.
How do you charge the forth cell that is powering the airbud? I know that 18650 would last a few weeks of playing but still? Is there a 5v charging module after a step down? There are 3sBMS charges with 5v inputs available. I wonder if I connect that in series with a dedicated charger for a single cell, would that also create a ground loop like it did when you powered the earbud and the amp from the 4s pack? maybe i'll add a switch or install two separate usb-c charging ports. I saw many videos where the get away with a single battery for both bluetooth and the amp using some 4 pin module.
Lesgooo electronoobs! 🙌🙌🙌
Nice product
The first BMS you were going to use is not only 5s. It can be modified from 3s-5s. In that BMS the minus terminal was shorted to the B1 with a 0 ohm resistor, that means it is 4S. If you want to use it as 3s then you need to short the minus, B1 and B2
Bro use a B0505s along with a 12v to 5v voltage regulator. It will completely eliminate the ground-loop noice and the noice from the buck convertor will also get eliminated.
wao😳
Broh those are really awesome!!
What is the value of the resistors that are being used for low pass filter and high pass filter.and off course the capacitor as well?
Beautiful result ! I finished a mono speaker based on a tda2030 yesterday , I used speakers from an old TV and for the power I've used an atx psu that was laying around , the sound isn't too bad when it's working but if it's not plugged in the noise is horrible. I should have made a proper power supply for it .
Great tutorial! I know nothing about electronics and can't find how the push button to power on the earbuds was wired. Can anyone help with this please?
Many thanks.
You can use isolated buck converter instead of using tou seprated batteries.and is it produse nice sound without tweeter?and is it possible to use 15 wat driver connected to 30 wat amplifier?
Brilliant presentation my friend, clear, precise and very enjoyable. I loved the banana for the visible scale representation by the way.😂
Oh the Time travel box, let's meet up in 3045 and I'll get you a coffee made freshly from my replicator. 😂
hi can you explain the resistors used in the crossovers because i can't find the 1 ohm and 5 ohm resistors mentioned in your website , if you can give me the link for individual resistor rather than the whole set it would be helpful thanks
hey dude its awesome ❤️
What about volume? Do you have to control both speakers independently?
Graet job . But i want ask what's name the last song when test the direction left and right . ??
Can use the 2 speaker separately.
I did the same with less parts and better speakers at 50 watts at 4 ohms. Only now thanks that we think the same I also thought of Bluetooth headset as the source and separate amplifier. At 4.5 volts and yes direct to the input on the amplifier. The amplifier is 12 volt model with a micro class d chip. Cost was less than one hundred dollars. And I put two high quality crossovers that make the sound very good.
Hang on did the earbud change color. But still awesome work. What’s charging the single Li-ion cell. I’m guessing that with the buck converter you had a negative feedback loop?
I want to know the every parts value and particularly that filter circuit diagram and components value.
I've made these but when i increase the volume I'm getting the battery beep sound for battery low, even though I've fully caherged the battery for usage, please help me out with this issue 🙏🙏🙏 Please reply.
hey there can i know how can i connect subwoofer for that....i mean for subwoofer the both channel has to be mixed and then amplified ......how this process will happen....please make a video on that
thank you for the video!!! please make a "how to" filter hum from main ac, 60Hz or the hum that appears when we touch the audio jack
Turning on the earbuds is the difficult part. How you solved it. Mine worked by touch control. It didn't have button.
Hey, what is that chip inside that pair of bluetooth headphone you used, seems a quite generic chinese chip with a 'pi' like marking on it... didn't find any datasheet tho...
bro, can you do a review about foc bldc drivers? What is FOC?
The circiut on this is so similar to the circuit I used on my diy 60w amp
But mine is only mono and uses a bluetooth receiver with a 7segment display
Anyways great video as always
You are a genius
to avoid ground loop noice you can use dc to dc isolated convertor ....between power and step down conv
Yeah I would probably use something like a B0505S.
Do you have to keep the ear buds in their case, or can you just have their bare PCB out?
You can use it without the cae obviously.
@@ELECTRONOOBS I only asked because I've seen another video that kept the plastic earpod case. Sorry I wouldn't say it was obvious.
@@CDE.Hackerhahahaha don't worry. I've let them inside the case because it was easier :)
Hii electronoobs bro
You have 3lakhs + subscribers but
You upload a video 1 day ago 5.5k views only
I know you put more hard work for making videos but you have not get much more views but one thing
I support your channel long time
Your projects are really nice i follow you thanks😊🙂
Thank you for the support. Yes , RUclips is avoiding my videos.... :/
@@ELECTRONOOBS don't feel about RUclips's mistake you can create more interesting videos
Can I use just one driver? I just plan to use it for watching movies on my pc
Great project.
Because the earbuds need very low power you could use a simple 7805 regulator. So you don´t need the second battery.
Nice experiment and motivation for New innovation Thanks
Excellent video! Can this same method be applied to earmuff hearing protection, but on a smaller scale? Something like a DIY true wireless Bluetooth 3M Worktunes headset? An "over-the-earbud" so to speak. They would be used as incognito headphones with no exposed wires. I'm a complete idiot when it comes to this sort of thing, so any advice would be greatly appreciated.
If you have a place to put the Bluetooth/amp board, then yes. If you don’t need the AM/FM tuner then I’m sure a weaker BT board will fit somewhere in there. You’d also need to check what kind of power the BT board needs to see if the batteries you already have will suffice.
If I understand correctly, you already have wires ran to the speaker drivers and a potential power supply, so really you just need the BT board/module. It should be able to power the speAker drivers by itself without an amplifier, so you’d need to find a BT module/amp that would fit in the ear muffs.
Excelent tutorial, thanks for sharing!!!
Isn't this prone to distortions due to the fact you're taking the relatively low impedance signal from the earbuds and inject them into the amplifier directly?
The filters resistors should increase the impedance
Of course BT module signal should be buffered if you are serious.
I really wanted these
What is your opinion about TPA3110 amplifier?
where is the updated wiring schematic for the extra battery in the circuit?
Very nice idea
Excellent video and project. You could use a linear power converter (78L05 for example) to drive the ear buds from the higher voltage battery pack.
when you connected bluetooth module to buck converter, ground loop was creating and you could hear noise. You could use dc-dc isolating converter (for example B0505S-1W) for bluetooth power and get rid of it
Please which 3d software, did u use
can you do 5.1 system like this??
very good friend😃
Very good DIY 💖
Buen trabajo. Aunque porque no calculas y disenias tus propios parlantes, como sugerencia los modulos han hecho un poco esteril a la electronica
Can you tall me that filter components values,...?
That's super cool
Very cool man
nice 😂👍
Lovely project
Nice job
How do you calculate the values for the filters?
I am using dindinmodern bluetooth speaker, which I think is very good among low-priced speakers.
if you're using bluetooth chips from earbuds with touch buttons, let me save you the trouble: To extend the button's functionality to an external housing all you need to do is solder a wire to the conductive bits of the button part on the chip, and that entire wire will act as a button
#please #make #UAV_Drone_MQ-9 with #audino... I see your talent, very impressive 👏👌... #Electronoobs.
A kind request... #Big_Move
Diy perks?
Polarized capacitor for filters???
I am using dindinmodern bluetooth speaker, and I think it is very good among low-priced speakers.
You could use 4 TP4056 1 Li-ion battery charging unit in series . So, then it will be 4S1P battery BMS.
Good Job
Bravo buddy 👌👌
I'm surprised there isn't some premade boards / pcbs available for this setup
Could anyone explain where the wires connect inside the earbuds to turn them on please?
The reason I couldn't see how to wire in a start switch was because I had fixed the buds to the board in the speaker already.
Opened up the bud and saw straight away that all you need to do is solder a wire either side of the push button.
...I bought a dindinmodern speaker last time. Although it is not perfect, it is the best among the products at the same price...:))
sir please make a commercial radio transmitter like radio at 10 that have many extra aux channels like toogle switch and may potentiometers
That's cool ❤
can i get circuit diagram of low pass filter and high pass filter
how if you want to do dolby surround?
thanks
Awesome project...
it would be interesting to add 2 more pogo pins on the earbuds and make them dockable on the speaker itself !!! that way you can still pick them up and put them in your ears or dock them on the speakers and have big boi sounds from the speakers
Wow supper project !!!
How can if i paralel both of tws module audio output?
Awesome
Dude, try using esp32 as bluetooth audio receiver
Nice 🔥🔥
You don't make it clear if the buck regulator noise is due to the switching or a ground loop. If the former you could just replace the buck regulator with a linear... that headphone receiver is going to draw a tiny current.
DIY Perks made very similar video few months ago
Yes, I've seen it actually it helped me a lot :)
I'm surprised you didn't house a stereo bluetooth receiver in one speaker, and have it play one channel on the speaker, and transmit audio with some sort of wireless audio transmitter to the other speaker. I guess hacking the earbuds is cheaper, though. I'm surprised there was a soic-8 IC in the earbuds.
I thought about that but wouldn’t I have to control each speakers volume level independently?
I like it.