Firstly thank you for video.I just wanted to ask why did you recommend capacitor for output of xy bt module and what kind of capacitor(v,uF) should we use.Greetings from Turkey :)
I do recommend capacitor at the output because I've measured direct current (DC) at the output. It is not obligatory but I do recommend. In my other video: th-cam.com/video/ip2-w9dv-Gk/w-d-xo.html I talk more in detail about this. The best capacitor selection is the audio capacitors, at least 4.7uF and the low voltage rating is good.
Hi, no, if it works good it shouldn't heat up at all. Works with really low current. If heats up and draws a lot of current, then it might be a faulty module. Thanks for watching!
After a lot of search on Google, apparently this JieLi AC6905 IC is used on a lot of bluetooth boards. The pinout in the datasheet corresponds to the pinout of the IC on the board, so taht's how I knew it is an AC6905. Here is a good blogpost about this misterious IC: github.com/christian-kramer/JieLi-AC690X-Familiarization
Thank you for the video. Hey, you can use the H button on your multimeter, and I can predict, that if you will push it 1-2 sec, it will "hold" and display the maximum of parameter you measuring.
So if i try to solder a 18650 battery will the unit always be on as long as the battery is connected? It would be nice to see a switch on this. I will have to solder a switch between the battery and the board to get this to be on and off as i wish?
Hi, yes you need a switch in order to turn it on or off, but I recommend using also a TC4056A based bms module to protect the battery from overcharge, overdischarge and many more.
Nice video! Am niste căști on-ear cu microfon, daca de exemplu le conectez direct la placa pe pinurile L, GND și R, o să meargă sau îmi va trebui și un amplificator? P.S. daca le conectez prin mini-jack microfonul va fi funcțional sau va prelua sunetul din microfonul telefonului? P.P.S. daca vreau sa conectez și o baterie de 3.7v de 250 mAh, îmi va trebui un modul de încărcare sau îl are incorporat? Mersi anticipat
Thanks! Teoretic ar trebui sa mearga fara amplificator separat, dar inca nu am probat. Placa asta nu are si nici nu suporta microfon, ceea ce inseamna ca microfonul telefonului va fi folosit. Da, este recomandat folosirea modulului de incarcare.
@@Helectronics Mersi, atunci cred ca o sa caut o baterie care sa vina deodată cu modulul de încărcare sa ocupe mai puțin spatiu. Îmi poți spune cât de mare este latența?
I would recommend using a dedicated charging protection circuit. You can see one in my other video titled: BUILD - WonkyMonkey Bluetooth speaker repair.
Hi, yes it works, but I would recommend to connect the battery first to a charge and protection circuit and then to the XY-BT-Mini. Thanks for watching!
are you facing problem: sound lag or sometimes there's no sound while playing audio suddenly there like bad connection? FYI I also was try put near device.
Probably depends on the phone, I'm using Samsung and within 5 meters work perfectly. My work collegue has a Huawei and that phone had the sound lag and connectivity problems.
The sound quality is really good, the difference can't be heard. At 3:18 you can see the sine wave is clean with really small ripple. That ripple can come from the power supply what I've used.
Be careful, you can't connect speakers directly to this module, it is just a bluetooth receiver module. You can connect it to a power amplifier and then to speakers. If you want to try a powered bluetooth receiver I recommend DW-CT14+ which has a 3+3 watts of stereo output, you can watch a review video of it here: th-cam.com/video/GQ0AoIjkZyc/w-d-xo.html
No, it is not possible. This module is not a powered amplifier, it is more like a receiver, you need a power amplifier in order to get a loud sound. You can use a Class D PBTL module like TPA3118 or TDA8932 which works with 9 volts or more. If your project works only with 5 volts you can connect the XY-BT-Mini to a PAM8403 stereo class D amplifier or use already a powered bluetooth receiver like the DW-CT14+. You can see the review of the least board on my channel.
Will it reduce the bass, if I connect it with my 5.1 home theater (i ball). Last time I used the micro Bluetooth board to my 5.1 HT, but it reduced the sound and sound quality with no bass... plz suggest.
I can't give you an exact response, because I don't know that micro bluetooth board, all I can say that the frequency response of XY-BT-MINI is really good on low frequencies so it should be good.
On the Aliexpress you can find bluetooth boards with microphone but those are a little bit expensive, I haven't tried one yet so I can't recommend you a good one.
thanks a lot for making this video , for testing the lowest operating voltage and current rating also. :) one last quest before i buy this to make a Bluetooth headphone. - if i solder a lithium ion battery to the battery plus and minus terminals on the board, can i charge the battery by plugging in a 5V 500 mA charger at microusb port of the board ?
First of all, thanks for watching! Theoretically yes, but it's not safe. I would recommend using a Li-Ion Battery Management System module, which protects the battery from overvoltage, undervoltage and more. If you want to use it in a headphone, then I highly recommend the BMS module, for safety.
Alright, but be very cautious, if the Li-Ion battery is handled wrong, or charged in a bad way, it can explode. So do a lot of research and test before you use that headphone.
Is this board stereo or mono? I bought 2 different (they are not " xy by mini") modules. All of them had a two outputs (right - left) But when measure the outputs, i saw right and left pins short circuit. They are not stereo. So mono..
Hi, haven't tried it yet, but later I might sacrifice one for this kind of experiment. The other, easier option is buy the other versions of this circuit, with buttons or with remote controller. You can find the links for those in the describtion.
@@Helectronics , only soldering two wire - its not intresting )) I order this board one week ago, and when parsel arrive to me want modify this receiver. Also in all factory version dont have fm. For me intresting made some things by myself.
I don't recommend using that charger, it is better if you use a dedicated BMS protection board and you connect that. If you have a battery with a built in protection circuit, then you can use it.
@@Helectronics Thanks for the response :) I have ordered some charging boards which have over charge protection and low power cut off. Thanks for the video, looking forward to some more! :)
I have the exact same module but mine has such a high noise... Like a buzzing sound when pushed a bit higher... not really clean sound on my opinion... can it be any defective component?
Hi, what did you connect to it? What kind of amplifier? What is the power supply, a micro USB phone charger? It might be faulty component, but I need more details to find out.
Helectronics thanks for your answer! I’ve used so far several sources: the USB port from the amplifier, some normal iPhone charger and some USB port from the TV... all with the same cable... I’ll try another cable but I feel I got a lemon unit... anyway thanks for your review in so much depth!
Helectronics I’ve figured out the problem... it was a ground loop... in was using always the same circuit as the amp, same plug, the integrated usb port... as soon as i connected to another plug in the house unrelated to the amp with a proper usb charger it became clean sound! Thanks for the help... if I wanted to remove the ground loop on the USB port would there be any option?
Have you solved the problem? Because I did. All you need to do is use external power source like powerbank. It doesn't consume much energy so using a powerbank is the best option for the best sound quality
@@Helectronics owh I see... that's why DW-CT14+ has high noise on output. recently i found this module on aliexpress www.aliexpress.com/item/dc-12v-APT-X-Bluetooth-4-2-Audio-Receiver-Board-Wireless-Stereo-Audio-Lossless-CSR64215-Module/32953766178.html?spm=2114.search0604.3.255.3a8f6137aCUEui&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10068_10890_319_10546_317_10548_10696_453_10084_454_10083_10618_431_10307_537_536_10059_10884_5736015_10887_100031_321_322_10103_5736115-10890,searchweb201603_53,ppcSwitch_0&algo_expid=5f768d2f-1c60-437d-8e1e-1b7934d68966-37&algo_pvid=5f768d2f-1c60-437d-8e1e-1b7934d68966&transAbTest=ae803_4 and i'm curious with it, does it sounds better than XY-BT Mini?
Hi, thanks for watching and for the kind words! Unfortunately not yet, but here you can read an interesting blog about how to start this journey: github.com/christian-kramer/JieLi-AC690X-Familiarization
when connecting this module to the amplifier input, the %80 sound deteriorate. could the input signal be too much for the amplifier? How can ı fix this do u know. thankyou
I need a lot more information in order to help you, what kind of amplifier do you connect it to it, what kind of power supply do you use for this board? Aren't you accidentally connecting this module to a phono amplifier?
@@Helectronics I used a phone charger for xy-bt DC 5 volts. amplifier 1 + 1 sound system. with ac plug. It has tda2007a chip inside. speakers 2x5w 4ohm. When the volume exceeds 70%, the amp tries to exceed its final volume. and the sound is distorted. I have now tried my own Samsung Bluetooth headset. there is no problem in it is very clear at full volume. model hs 3000. Could the headphone output signal of this model be high for the amplifier? Should I try another model?
Probably yes, the input signal is high and probably exceeds the max power output of the tda2007. If you have a more powerful amplifier with better speakers then you can give it a try. Does your sound system make these distortions with other signal source? (Like a PC or phone on max volume)
@@Helectronics no it has very clear sound at full volume with aux and Samsung hs 3000 Bluetooth device. Do you think the problem will be solved if I change the amplifier volume potentiometer. Or is it more logical to look at another module. 50k installed.
Probably the Samsung HS3000 output is lower than the XY-BT-MINI, it is not necessary I think, you just don't crank it up to the max, just until the sound is clean. At max volume has the Samsung the same loudness as the MINI with distortion or it is less loud?
Actually yes, but it's not easy to find the connections on the pcb of the car radio. You have to find where to connect the stereo output of the bluetooth board also with LM7805 the 12 volts must be dropped to 5 volts for power supply.
@@Helectronics HOMREE DC-DC Converter Step Down Module 12V to 5V Micro USB Output Buck Power Adapter (Micro USB) www.amazon.com/dp/B01MEESLZ6/ref=cm_sw_r_cp_apa_i_HqfYDbTJ3VGEP
This is a switching regulator, which means the voltage is regulated by fast switching, the efficiency is high but you might have a lot of noise. This is good for phone charging but not really good for bluetooth receivers and amplifiers. The LM7805 is a lot cheaper, less than 0.2 dollar per piece and it's not a complicated circuit to build.
In the last two days I've been testing the XY-BT-MINI and the PAM8403 to reduce the noise. One of the best solution is to put a 3300uF decoupling capacitor to the supply lines. Also at the output of XY-BT-MINI a 474 monolythic capacitor in series and a 22k ohm resistor in parallel. I will make a dedicated video just to give tips how to reduce noise on this module
You can connect headphones to this module (XY-BT-MINI). The bass and the sound quality is really good, which also depends on the quality of the headphones. Be careful because it is really loud.
@@hernandez2641 You can control the volume only from the phone. Probably there is way to connect a potentiometer to the output of the module, but it's not a sure thing it will work perfectly. Yes, these modules comes from China, the shipping takes about two months.
I ordered 3 of these devices. All of em have the super annoying Chinese voice, very bad audio quality with no bass and static interference that you can definitely hear while no music is playing. How can this be a good BT receiver???
Sorry to hear that you've received the models with voice notifications. The interference might come from grounding issues. If all three modules produce the same result then some connections or the amplifier might be faulty.
@@Helectronics amplifier is great no issue there tested it with several other sources. I will try and eliminate interference with your mod and see how it goes
@@Helectronics Thank you for your reply, Sir. Mine just arrived, the sound only heard from left speaker. Is probably anything wrong with mine? Mine is exactly like your.
There is no output at right channel? Do you have an oscilloscope? Did you use a phone and connected with bluetooth? Does you phone's music player outputs the stereo signal, did you check the settings?
@@Helectronics From the right speaker only hear sound like humming. I don't have oscilloscope, Sir. Yes I tried using my cell phone. I'm using Android phone, I'm afraid there is no such setting on the phone.
I understand what you do. Can it just stay still? Watched from many channels, all doing the same Can the battery connect to the circuit? Do you like a headset Thank you
Exactly, it can be annoying but if you are lucky, they will send the version without voice notifs, instead with pleasant sound notifs. I've ordered twice, and only the first order boards were having the annoying voice notifs.
@@Helectronics I got the one from www.aliexpress.com/item/32995063652.html here, ordered last month. I got really worried about the sound quality of the device at first because the bloops and beeps sound like they're copied via microphone from a phone. But they're still much better than the voice.
@@Helectronics I always get the Chinese woman " Da bru tooof derice is connecteduh sussessphiry" . I really like these tiny BT DIY boards but usually they do not come with enough i/o if any headers/pads at all. At least with headers/pads or any serial connection there is a chance of finding better firmware for that chip and re-flashing it. Or maybe even a breakout for on-board storage. I guess you could remove and flash that way but then you have to re ball it. Mine just says Power On , Connected, Disconnected, Poweroff.. Its better than a whole sentence.
@@DDBAA24 So on point! Haha, looks like not everyone is lucky to get the device without the voice notifs. Next time try to order from World Chips shop on Aliexpress. The link is updated in the describtion.
@@Helectronics Yes its been a hit or miss, at least the pronunciation is comical lol. I find that the more $ the better chance there wont be notifs. Thanks for the link .
@@aleksmitchel8259 Да, вы можете включить субтитры на английском языке и включить перевод, он автоматически переведет их на русский язык. Или я могу выслать вам весь текст на английском языке, просто отправьте мне свой e-mail в личном сообщении на моей странице в фейсбуке. Вы можете найти мою страницу в описании.
Алексей, пора уже давно вспоминать английский, хотя бы школьную программу, да и китайский пора начинать учить, такими темпами скоро станем их провинцией.
I love how it goes from a Chinese accent to an English/Australian accent LOL
Thank you very much for the video man... you deserve more subscribers... I just subscribed to your channel
You are welcome, glad that you like it and thank you for the kind words!
It seems that i am late to the party - I just got one of these & i'm pleased with the sound quality.
Firstly thank you for video.I just wanted to ask why did you recommend capacitor for output of xy bt module and what kind of capacitor(v,uF) should we use.Greetings from Turkey :)
I do recommend capacitor at the output because I've measured direct current (DC) at the output. It is not obligatory but I do recommend. In my other video: th-cam.com/video/ip2-w9dv-Gk/w-d-xo.html I talk more in detail about this. The best capacitor selection is the audio capacitors, at least 4.7uF and the low voltage rating is good.
Uzay Uzay a mur
Looks like the new version doesn't have that voice notification but just ding sounds.
Great news, thanks for watching and letting us know! Did you buy this product recently?
how is the new version called ?
@@fakedketchup5029 I think it is the same board.
I bought a VHM-314 chip in january, and it also seemed to have just the ding notifications.
Excellent video. Very comprehensive information. Subscribed!
Thanks for the positive feedback!
Good video, thx! The frequency range measurement was a nice touch.
Do you know if I can reduce the "ssss" noise by adding a capacitor in the power input?
It might reduce, but unfortunately it won't eliminate totally the hissing. This is a cheap module, you can't have high expectations.
Good & perfect explanation sir. Thank you.
Thanks for watching!
Is the chip or any other component hot or is it heating up. Thanks ☺
Hi, no, if it works good it shouldn't heat up at all. Works with really low current. If heats up and draws a lot of current, then it might be a faulty module. Thanks for watching!
@@Helectronics Thanks
Hey, can you compare "XY BT mini" and "VHM-314". Both are 4.1 and 5.0 in bluetooth versions respectively
In a future video I might do it, I put this on my list. Thanks for watching!
@@Helectronics thank you!
how to rename this module bluetooth name ?
@@tamircihasan i don't think we can change the name as it is hard coded within the IC
Hi, the low frequencies works good on that Device?
Recognize microphone of phone connected on p2?
Good video!
Thank you! Yes the low frequencies are good, but haven't tried to connect a microphone.
How did you know that was the number of the chip? What was shown in the video was completely different.
After a lot of search on Google, apparently this JieLi AC6905 IC is used on a lot of bluetooth boards. The pinout in the datasheet corresponds to the pinout of the IC on the board, so taht's how I knew it is an AC6905. Here is a good blogpost about this misterious IC: github.com/christian-kramer/JieLi-AC690X-Familiarization
@@Helectronics Wow. Wonder how they figured that out. Thanks.
The board have a function for unpair all amount of devices previously paired (resetting)?
Thanks a lot for the video.
Sorry, haven't found any similar function on this module. Thanks for watching!
You did not mention any changes in voltage based on freq. I wanted to know if the output is flat across all Freq
It is flat from 40Hz up to 20kHz.
Does this have "low battery" notification if I use battery as power supply?
I don't think so, at 2:15 I've used my variable voltage supply and when the voltage goes down to 3.2 volts, it simply shuts down.
Thank you for the video.
Hey, you can use the H button on your multimeter, and I can predict, that if you will push it 1-2 sec, it will "hold" and display the maximum of parameter you measuring.
So if i try to solder a 18650 battery will the unit always be on as long as the battery is connected? It would be nice to see a switch on this. I will have to solder a switch between the battery and the board to get this to be on and off as i wish?
Hi, yes you need a switch in order to turn it on or off, but I recommend using also a TC4056A based bms module to protect the battery from overcharge, overdischarge and many more.
Can you combine the left and right channels for mono output?
Yes, using resistors it is possible to combine the two channels. Here is a very useful page about this topic: www.rane.com/note109.html
Damn,i really HATE that lady.
dear sir please help me how to attach the mic on this device for calling
Hi, sorry but this module can't be used for phone calls and you can't connect a microphone to it, as far as I know.
What is max voltage to use? Can i connect on power wire directly? (12 vdc)
5.5 volts is the maximum, but I wouldn't recommend using higher voltage than 5 volts. 12 vdc is going to burn it!
Use lm7805
Nice video! Am niste căști on-ear cu microfon, daca de exemplu le conectez direct la placa pe pinurile L, GND și R, o să meargă sau îmi va trebui și un amplificator?
P.S. daca le conectez prin mini-jack microfonul va fi funcțional sau va prelua sunetul din microfonul telefonului?
P.P.S. daca vreau sa conectez și o baterie de 3.7v de 250 mAh, îmi va trebui un modul de încărcare sau îl are incorporat?
Mersi anticipat
Thanks! Teoretic ar trebui sa mearga fara amplificator separat, dar inca nu am probat. Placa asta nu are si nici nu suporta microfon, ceea ce inseamna ca microfonul telefonului va fi folosit. Da, este recomandat folosirea modulului de incarcare.
@@Helectronics Mersi, atunci cred ca o sa caut o baterie care sa vina deodată cu modulul de încărcare sa ocupe mai puțin spatiu.
Îmi poți spune cât de mare este latența?
Are latență dar nu ştiu cât este cu exactitate. În jur de 0.2-0.5 secunde, poate. Totuşi, modulul este foarte bun pentru prețul ăsta.
@@Helectronics Am înțeles, mersi inca odată
Sr for my poor english
Can't it charge for battery if we use usb cable to power it and connect battery in battery-pin , tks ?
I would recommend using a dedicated charging protection circuit. You can see one in my other video titled: BUILD - WonkyMonkey Bluetooth speaker repair.
What's function of test point on pin 1 ic ?
Sorry for my bad english
How change name ?
Hi, does the module work 3.7 v. Li-On battery?
Hi, yes it works, but I would recommend to connect the battery first to a charge and protection circuit and then to the XY-BT-Mini. Thanks for watching!
@@Helectronics thanks for your interest
Do i need the charging module to connect the battery to charge?
It is safer to use a dedicated charging module
are you facing problem: sound lag or sometimes there's no sound while playing audio suddenly there like bad connection?
FYI I also was try put near device.
Probably depends on the phone, I'm using Samsung and within 5 meters work perfectly. My work collegue has a Huawei and that phone had the sound lag and connectivity problems.
how's the sound quality output using this compare when using auxiliary cable?
The sound quality is really good, the difference can't be heard. At 3:18 you can see the sine wave is clean with really small ripple. That ripple can come from the power supply what I've used.
Doea it have minimum speaker wattage?
Be careful, you can't connect speakers directly to this module, it is just a bluetooth receiver module. You can connect it to a power amplifier and then to speakers. If you want to try a powered bluetooth receiver I recommend DW-CT14+ which has a 3+3 watts of stereo output, you can watch a review video of it here: th-cam.com/video/GQ0AoIjkZyc/w-d-xo.html
Thanks , BUT you forgot to mention that it is Stereo or double channel mono device
It is stereo.
Is it possible to bridge this amplifier to get a mono signal and double the output power??
No, it is not possible. This module is not a powered amplifier, it is more like a receiver, you need a power amplifier in order to get a loud sound. You can use a Class D PBTL module like TPA3118 or TDA8932 which works with 9 volts or more. If your project works only with 5 volts you can connect the XY-BT-Mini to a PAM8403 stereo class D amplifier or use already a powered bluetooth receiver like the DW-CT14+. You can see the review of the least board on my channel.
Will it reduce the bass, if I connect it with my 5.1 home theater (i ball). Last time I used the micro Bluetooth board to my 5.1 HT, but it reduced the sound and sound quality with no bass... plz suggest.
I can't give you an exact response, because I don't know that micro bluetooth board, all I can say that the frequency response of XY-BT-MINI is really good on low frequencies so it should be good.
Can it able to charge the battery?
It can, but I still recommend using a battery with protection circuit or a dedicated charge management module with an unprotected battery.
Hello, I have a card from this model and it does not connect or appear on my smartphone, what can I do to solve it?
Hi, have you powered it up with a good micro USB or stable 5 volt supply? Was the blue LED blinking? What kind of phone do you have?
very useful thanks
You are welcome, thank you for watching!
Is there any Bluetooth board with mic
For calling & listening to music
On the Aliexpress you can find bluetooth boards with microphone but those are a little bit expensive, I haven't tried one yet so I can't recommend you a good one.
Nice review i bought it for 50 pesos
I wanted to ask about as18ap chip
Do know any datasheet for it?
I couldn't find any
thanks a lot for making this video , for testing the lowest operating voltage and current rating also. :)
one last quest before i buy this to make a Bluetooth headphone.
- if i solder a lithium ion battery to the battery plus and minus terminals on the board, can i charge the battery by plugging in a 5V 500 mA charger at microusb port of the board ?
First of all, thanks for watching!
Theoretically yes, but it's not safe. I would recommend using a Li-Ion Battery Management System module, which protects the battery from overvoltage, undervoltage and more. If you want to use it in a headphone, then I highly recommend the BMS module, for safety.
@@Helectronics thanks a lot man for all the info :) the headphones which i want to try it on are pretty expensive.
Alright, but be very cautious, if the Li-Ion battery is handled wrong, or charged in a bad way, it can explode. So do a lot of research and test before you use that headphone.
Is this board stereo or mono? I bought 2 different (they are not " xy by mini") modules. All of them had a two outputs (right - left) But when measure the outputs, i saw right and left pins short circuit. They are not stereo. So mono..
Yes, this board has stereo output, I've tested it. What are the names for the boards? Thank you for watching!
@@Helectronics I bought at Aliexpress. It's name is Bluetooth to Aux adapter for Car audio.
Those are probably not the best quality, so they might just made a shortcut and split the mono signal to both channels, cheap solution.
Can we connect 5w speakers to this board?
Is this board had inbuilt amplifier?
Hi, no you can't, you have to connect an amplifier to this board. This is just a receiver module.
@@Helectronics thank you
Hello.
Do you try connect the control buttons?
Also, by schematic, chip have fm detector and usb host.
Sorry for my english.
Hi, haven't tried it yet, but later I might sacrifice one for this kind of experiment. The other, easier option is buy the other versions of this circuit, with buttons or with remote controller. You can find the links for those in the describtion.
@@Helectronics , only soldering two wire - its not intresting ))
I order this board one week ago, and when parsel arrive to me want modify this receiver.
Also in all factory version dont have fm.
For me intresting made some things by myself.
Great concept, you can try it!
Hi there. If I connect 3.7v batt. Will connecting micro USB charge the battery safely?
I don't recommend using that charger, it is better if you use a dedicated BMS protection board and you connect that. If you have a battery with a built in protection circuit, then you can use it.
@@Helectronics Thanks for the response :) I have ordered some charging boards which have over charge protection and low power cut off. Thanks for the video, looking forward to some more! :)
friend how do i find these bluetooth datasheets i searched a lot and never found my ic bluetooth help me there bro 🙏🏽🇧🇷
The receiver IC used on this module is JieLi AC6905A, here is the datasheet for it: img005.hc360.cn/k1/M09/34/E3/wKhQwFmw58KEPsWjAAAAAJGE4z0447.pdf
Can I use earphone at the output of 3.5mm jack??
Yes
is it possible to rename the chip? somehow
Hi, unfortunately not yet.
I soldered a battery on the module. Can I charge the battery source using the micro usb on it ?
What kind of battery have you soldered to the module?
@@Helectronics A single 18650 battery with a batt protection.
Ok that's good, you can try to charge the battery with it
@@Helectronics Thank you.
I have the exact same module but mine has such a high noise... Like a buzzing sound when pushed a bit higher... not really clean sound on my opinion... can it be any defective component?
Hi, what did you connect to it? What kind of amplifier? What is the power supply, a micro USB phone charger? It might be faulty component, but I need more details to find out.
Helectronics thanks for your answer! I’ve used so far several sources: the USB port from the amplifier, some normal iPhone charger and some USB port from the TV... all with the same cable... I’ll try another cable but I feel I got a lemon unit... anyway thanks for your review in so much depth!
@@beiz08 What do you connect to the output of the module? When you order this kind of board, order at least two.
Helectronics I’ve figured out the problem... it was a ground loop... in was using always the same circuit as the amp, same plug, the integrated usb port... as soon as i connected to another plug in the house unrelated to the amp with a proper usb charger it became clean sound! Thanks for the help... if I wanted to remove the ground loop on the USB port would there be any option?
Have you solved the problem? Because I did. All you need to do is use external power source like powerbank. It doesn't consume much energy so using a powerbank is the best option for the best sound quality
Nice one!!!
Thanks for watching!
is this module has the same bluetooth IC as the DW-CT14+ module??
Yes the receiver IC is the same, but the DW-CT14+ has two class D amplifiers for the powered stereo output.
@@Helectronics owh I see... that's why DW-CT14+ has high noise on output.
recently i found this module on aliexpress
www.aliexpress.com/item/dc-12v-APT-X-Bluetooth-4-2-Audio-Receiver-Board-Wireless-Stereo-Audio-Lossless-CSR64215-Module/32953766178.html?spm=2114.search0604.3.255.3a8f6137aCUEui&ws_ab_test=searchweb0_0,searchweb201602_4_10065_10068_10890_319_10546_317_10548_10696_453_10084_454_10083_10618_431_10307_537_536_10059_10884_5736015_10887_100031_321_322_10103_5736115-10890,searchweb201603_53,ppcSwitch_0&algo_expid=5f768d2f-1c60-437d-8e1e-1b7934d68966-37&algo_pvid=5f768d2f-1c60-437d-8e1e-1b7934d68966&transAbTest=ae803_4
and i'm curious with it, does it sounds better than XY-BT Mini?
Hello! Thank you for the video! Is it possible to rename this chip?
Hi, thanks for watching and for the kind words! Unfortunately not yet, but here you can read an interesting blog about how to start this journey: github.com/christian-kramer/JieLi-AC690X-Familiarization
is there a way to disable that woman sound with that chip
Hi, unfortunately there is no solution for that yet, only if you are lucky and buy the version without the woman sound.
Can you power this with cmos battery?
Usually the CMOS Battery has 3 volts which is not enough for this board to work, it requires at least 3.2 volts.
Bluetooth audio is stereo?
Yes
when connecting this module to the amplifier input, the %80 sound deteriorate. could the input signal be too much for the amplifier? How can ı fix this do u know. thankyou
I need a lot more information in order to help you, what kind of amplifier do you connect it to it, what kind of power supply do you use for this board? Aren't you accidentally connecting this module to a phono amplifier?
@@Helectronics I used a phone charger for xy-bt DC 5 volts. amplifier 1 + 1 sound system. with ac plug. It has tda2007a chip inside. speakers 2x5w 4ohm. When the volume exceeds 70%, the amp tries to exceed its final volume. and the sound is distorted. I have now tried my own Samsung Bluetooth headset. there is no problem in it is very clear at full volume. model hs 3000. Could the headphone output signal of this model be high for the amplifier? Should I try another model?
Probably yes, the input signal is high and probably exceeds the max power output of the tda2007. If you have a more powerful amplifier with better speakers then you can give it a try. Does your sound system make these distortions with other signal source? (Like a PC or phone on max volume)
@@Helectronics no it has very clear sound at full volume with aux and Samsung hs 3000 Bluetooth device. Do you think the problem will be solved if I change the amplifier volume potentiometer. Or is it more logical to look at another module. 50k installed.
Probably the Samsung HS3000 output is lower than the XY-BT-MINI, it is not necessary I think, you just don't crank it up to the max, just until the sound is clean. At max volume has the Samsung the same loudness as the MINI with distortion or it is less loud?
Brother where I patches it? please tell me soon
Hi, what do you mean exactly by patch?
Would this be good for a car radio to turn it into bluetooth?
Actually yes, but it's not easy to find the connections on the pcb of the car radio. You have to find where to connect the stereo output of the bluetooth board also with LM7805 the 12 volts must be dropped to 5 volts for power supply.
@@Helectronics I found this that already does it I just have to splice into the radio 12v cables
@@Helectronics HOMREE DC-DC Converter Step Down Module 12V to 5V Micro USB Output Buck Power Adapter (Micro USB) www.amazon.com/dp/B01MEESLZ6/ref=cm_sw_r_cp_apa_i_HqfYDbTJ3VGEP
This is a switching regulator, which means the voltage is regulated by fast switching, the efficiency is high but you might have a lot of noise. This is good for phone charging but not really good for bluetooth receivers and amplifiers. The LM7805 is a lot cheaper, less than 0.2 dollar per piece and it's not a complicated circuit to build.
@@Helectronics I'll definitely check it out! Thanks for the help!!!
Has this module any pairing or connecting issues with windows 10 using CSR 4.0 ?
I don't have a CSR 4.0 but hopefully other viewers can help you. Thanks for watching!
@@Helectronics sure, i requested to every one who has this module and csr 4.0 as well plz talk to me
@@CCTVReport I will heart your comment so everyone can see it, I hope someone can help you out.
@@Helectronics thanks dear
@@Helectronics where are you from ?
Is the audio stereo?
Yes the output audio is in stereo.
Any equivalent ic for jl ac6905a??
Sorry but I don't know yet, later if I find one I will let you know. Thanks for watching!
And how to reduce output noise ?
In the last two days I've been testing the XY-BT-MINI and the PAM8403 to reduce the noise. One of the best solution is to put a 3300uF decoupling capacitor to the supply lines. Also at the output of XY-BT-MINI a 474 monolythic capacitor in series and a 22k ohm resistor in parallel. I will make a dedicated video just to give tips how to reduce noise on this module
I've made a dedicated video for this board and how to reduce the noise, you can see it in my latest video.
why a lot of noise. how to eliminate noise?
It can be a ground loop problem, or the power supply is not clean, there are several reasons for noise.
Hello! This stereo module?
Yes, it is stereo.
How to disable the voice notification sound? Anyone figured it out? Pls let me know
Unfortunately I couldn't find a solution for that, hopefully others can help. Thanks for watching!
Helectronics it is pin8 but the problem is that this is also the general sound line. If you disconnect the pin you will have no sound at all.
hi bro when u connect to headphones.. is it sound good?bass? thx bro.. i want to make bluetooth helmet with this.. :)
Hi, I did not had time yet to test it, but as soon as I will have, I will let you know how it sounds.
You can connect headphones to this module (XY-BT-MINI). The bass and the sound quality is really good, which also depends on the quality of the headphones. Be careful because it is really loud.
@@Helectronics woah.. But this amplifier doesnt have vol control right? I have order it from china btw..
@@hernandez2641 You can control the volume only from the phone. Probably there is way to connect a potentiometer to the output of the module, but it's not a sure thing it will work perfectly. Yes, these modules comes from China, the shipping takes about two months.
I ordered 3 of these devices. All of em have the super annoying Chinese voice, very bad audio quality with no bass and static interference that you can definitely hear while no music is playing. How can this be a good BT receiver???
Sorry to hear that you've received the models with voice notifications. The interference might come from grounding issues. If all three modules produce the same result then some connections or the amplifier might be faulty.
@@Helectronics amplifier is great no issue there tested it with several other sources. I will try and eliminate interference with your mod and see how it goes
Is the output mono instead of stereo, Sir?
The output is stereo.
@@Helectronics Thank you for your reply, Sir.
Mine just arrived, the sound only heard from left speaker. Is probably anything wrong with mine? Mine is exactly like your.
There is no output at right channel? Do you have an oscilloscope? Did you use a phone and connected with bluetooth? Does you phone's music player outputs the stereo signal, did you check the settings?
@@Helectronics From the right speaker only hear sound like humming.
I don't have oscilloscope, Sir.
Yes I tried using my cell phone.
I'm using Android phone, I'm afraid there is no such setting on the phone.
Alright, unfortunately looks like the module is faulty from factory. What did you connected to the output?
What diod did you use for output?
Hi, I did not used diode for the output. Can you explain your question?
@@Helectronics you said something about output protection.... capacitor of some kind
@@finismarac4999 Oh yes, at 2:50 I talk about the output, it has DC, so I recommend to use capacitors if the power amplifier has no input capacitors.
I've used 4.7µF capacitors at each output.
@@Helectronics tnx. Great review btw.
Naaaahhh.,...that girl again,a BIG NO and a BIG FAIL for me for that module,
Not every module has it, after this video I have ordered more of this module and those had no voice notifications but only sounds.
@@Helectronics yah i know, I'm using SANWU 5V Bluetooth amplifier in my 2 speaker builds,and soon another 2.
The Sanwu is a 2x6w bluetooth receiver if I remember well, those are powerful!
Yah,i even hook 8pcs of 4ohms 5watt speaker,4 each channel,with no problem.
I'm sure it sounds great with 8 speakers!
Where is n off key
There is no on off key, if your question was that. It turn on when you connect it to 5 volts.
That's what I have been looking for. I am looking for a way to turn it off automatically after 30 minutes of no pairing
Berapa volt inputnya..
Power suplay?.
Selain di lubang usb..
Can you please write in English?
@@Helectronics how many volts of input power
5 volts
You can also use a normal phone charger
@@Helectronics Thankyou ferymuch😊👍
Queme I want see battery in for earphone
Sorry, I don't understand that, can you explain your question?
I understand what you do. Can it just stay still? Watched from many channels, all doing the same Can the battery connect to the circuit? Do you like a headset Thank you
Haven't connected a headphone yet. In case you want to connect a battery, I recommend using a protection circuit before connecting to this circuit.
Aaaah the dreaded voice announcing everything. THat's a deal breaker for me
Exactly, it can be annoying but if you are lucky, they will send the version without voice notifs, instead with pleasant sound notifs. I've ordered twice, and only the first order boards were having the annoying voice notifs.
@@Helectronics I got the one from www.aliexpress.com/item/32995063652.html here, ordered last month. I got really worried about the sound quality of the device at first because the bloops and beeps sound like they're copied via microphone from a phone. But they're still much better than the voice.
@@Helectronics I always get the Chinese woman " Da bru tooof derice is connecteduh sussessphiry" . I really like these tiny BT DIY boards but usually they do not come with enough i/o if any headers/pads at all. At least with headers/pads or any serial connection there is a chance of finding better firmware for that chip and re-flashing it. Or maybe even a breakout for on-board storage. I guess you could remove and flash that way but then you have to re ball it. Mine just says Power On , Connected, Disconnected, Poweroff.. Its better than a whole sentence.
@@DDBAA24 So on point! Haha, looks like not everyone is lucky to get the device without the voice notifs. Next time try to order from World Chips shop on Aliexpress. The link is updated in the describtion.
@@Helectronics Yes its been a hit or miss, at least the pronunciation is comical lol. I find that the more $ the better chance there wont be notifs. Thanks for the link .
На руском тоже самое можно?
извините, я делаю видео только на английском языке (google translate)
@@Helectronics Ну а мне на электронку текстовую версию на русском можно?
@@aleksmitchel8259 Да, вы можете включить субтитры на английском языке и включить перевод, он автоматически переведет их на русский язык. Или я могу выслать вам весь текст на английском языке, просто отправьте мне свой e-mail в личном сообщении на моей странице в фейсбуке. Вы можете найти мою страницу в описании.
@@Helectronics спасибо
Алексей, пора уже давно вспоминать английский, хотя бы школьную программу, да и китайский пора начинать учить, такими темпами скоро станем их провинцией.
90% a a nézőknek nem is magyar :(
Nem gond, azt a kevés magyart is nagyon megbecsülöm, köszi a megtekintést! :)
Пишите по Русски, я вас не понимаю.
Извините, только английские субтитры
Tnx Sir. Very informative review
Thanks for watching!