Hi guys,
I have a car radio that has a jack aux input. I want to solder a 5 / 12V bluetooth module (I will definitely find these voltages on the board), but I don't know which one to choose. I had a module for $ 1-2, however the quality was average (car has good sound system), but most importantly - there was a lot of noise. What module (from aliexpress) do you recommend? Should I add a choke on + voltage? 1uH or something?
Thank you in advance and sorry for the translator
I have a car radio that has a jack aux input. I want to solder a 5 / 12V bluetooth module (I will definitely find these voltages on the board), but I don't know which one to choose. I had a module for $ 1-2, however the quality was average (car has good sound system), but most importantly - there was a lot of noise. What module (from aliexpress) do you recommend? Should I add a choke on + voltage? 1uH or something?
Thank you in advance and sorry for the translator
I use one of these:
https://www.aliexpress.com/item/33048717959.htmlThey have a version without the tube though.
https://www.aliexpress.com/item/33048717959.htmlThey have a version without the tube though.
Maybe something cheaper? 😀 I thought that if a module for $ 1-2 was of average quality, then one for $ 10-15 would be of good quality
https://www.aliexpress.com/item/1005001698184499.htmlhttps://www.aliexpress.com/item/32967103093.htmlhttps://www.aliexpress.com/item/1005003071787657.htmlhttps://www.aliexpress.com/item/32714538451.htmlhttps://www.aliexpress.com/item/32795663933.html
What do you think?
https://www.aliexpress.com/item/1005001698184499.htmlhttps://www.aliexpress.com/item/32967103093.htmlhttps://www.aliexpress.com/item/1005003071787657.htmlhttps://www.aliexpress.com/item/32714538451.htmlhttps://www.aliexpress.com/item/32795663933.html
What do you think?
I have one of these running in an older onkyo thx tuner that’s been setup on an isolation transformer, and using better coupling caps, linear supply for the Bluetooth board. Really have no complaints as far as the sound goes.
https://www.ebay.com/itm/304376592410?hash=item46de42381a:g:kNgAAOSweohfUYYl
My car stereo uses a reworked Nakamichi PA300, and clones of JBL 4406 with better (Clarity Cap MR, air core inductors)crossover components. In the process of working on it, I had compared the KENWOOD Excelon head unit with the nicer DAC from my home system, there wasn’t much difference between the two in the car.
I wouldn’t hesitate to use one of the small Bluetooth 5.0 boards in the car. If there’s noise, then maybe a dc-dc converter type of supply would help, but I’d probably just try an lm7805 regulator first.
https://www.ebay.com/itm/304376592410?hash=item46de42381a:g:kNgAAOSweohfUYYl
My car stereo uses a reworked Nakamichi PA300, and clones of JBL 4406 with better (Clarity Cap MR, air core inductors)crossover components. In the process of working on it, I had compared the KENWOOD Excelon head unit with the nicer DAC from my home system, there wasn’t much difference between the two in the car.
I wouldn’t hesitate to use one of the small Bluetooth 5.0 boards in the car. If there’s noise, then maybe a dc-dc converter type of supply would help, but I’d probably just try an lm7805 regulator first.
They can pick up supply noise, and also spark plug noise.
7805, with a small drop resistor, works well enough.
Or put a diode as polarity protection / drop function.
Use a small capacitor as a noise filter.
Metal housing, securely earthed to chassis.
Sound quality is good for the cheapest ones, the chips are pretty nearly the same in the expensive ones too.
Buy several to blow up.
We even get small ones in metal housings for use in cars where the cassette or CD is not needed, they are very handy for USB, no vibration issues. They are wired to the older unit by the mechanics in less than an hour.
7805, with a small drop resistor, works well enough.
Or put a diode as polarity protection / drop function.
Use a small capacitor as a noise filter.
Metal housing, securely earthed to chassis.
Sound quality is good for the cheapest ones, the chips are pretty nearly the same in the expensive ones too.
Buy several to blow up.
We even get small ones in metal housings for use in cars where the cassette or CD is not needed, they are very handy for USB, no vibration issues. They are wired to the older unit by the mechanics in less than an hour.
I've used a number of these to convert old radios into BT speakers, to build BT speakers and also in my car:
LQSC Goodness 1
LQSC Goodness 2
I've probably used in excess of 15 of these, no failures, quiet (when you're careful with grounding) and great SQ for the money.
LQSC Goodness 1
LQSC Goodness 2
I've probably used in excess of 15 of these, no failures, quiet (when you're careful with grounding) and great SQ for the money.
These are FM / SD Card / Memory stick / Bluetooth / Aux. In modules.
Work nicely. 7805 is enough for car use, with maybe a drop resistor.
Less than $2 here... Maybe $4 with metal box.
Includes remote.
A lot are used as the input selector / front end for a variety of new mains operated amps, and also updating old home amps with these added functions.
The price is almost a joke, considering the number of parts and effort needed to make it.
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Have you listened to one?
There is a reason it's so cheap for so much functionality.
For a more elegant solution (especially if your car has a USB port):
I use this in my car. My phone is paired and playing music by the time I start the car.
https://www.amazon.ca/TUNAI-Firefly-Smallest-Bluetooth-Receiver/dp/B01HDO66NK
I use this in my car. My phone is paired and playing music by the time I start the car.
https://www.amazon.ca/TUNAI-Firefly-Smallest-Bluetooth-Receiver/dp/B01HDO66NK
My car has one, another in home amp.
I listen to them all the time.
Sounds about the same as my PC feeding a Kenwood or Philips amp, so no regrets.
I have been buying butane lighters made in China for many years, about 8 cents each, 25 cents for 3...
Again, how they do it is a mystery.
Two issues here, the wages in Western countries add to the selling cost, much higher than here. The other thing is that our traders buy in bulk packs (less shipping cost), and sometimes over stock items, so the prices paid by our traders can be quite different than what you get to pay.
That is reflected in their selling prices.
I listen to them all the time.
Sounds about the same as my PC feeding a Kenwood or Philips amp, so no regrets.
I have been buying butane lighters made in China for many years, about 8 cents each, 25 cents for 3...
Again, how they do it is a mystery.
Two issues here, the wages in Western countries add to the selling cost, much higher than here. The other thing is that our traders buy in bulk packs (less shipping cost), and sometimes over stock items, so the prices paid by our traders can be quite different than what you get to pay.
That is reflected in their selling prices.
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I used to get them 3 for 1$ years ago, but they were crap so I went to a Zippo since they light and last effectively forever.
Now that I quit smoking (3 years ago yesterday actually), I just have a butane torch to light the bong.
Now that I quit smoking (3 years ago yesterday actually), I just have a butane torch to light the bong.
I use them to light joss sticks, fragrance sticks.
Better than matches. Particularly in damp weather.
Gave up smoking in September 2018.
Better than matches. Particularly in damp weather.
Gave up smoking in September 2018.
@NareshBrd @phase someone from facebook group told me the same, i mean cheap module with good supply and maybe some capacitors. DC-DC isolated converter will be sufficient or i should add capacitor/choke/other filter? If need be, what capacity/inductance?
So you think that Qualcomm/BlueCore modules are overpriced/unnecessary for this application?
I dont have USB port, so i want to solder all cables and put module inside the radio. Do you recommend any shielding, additional insulation? Or plastic box will be enough?
So you think that Qualcomm/BlueCore modules are overpriced/unnecessary for this application?
I dont have USB port, so i want to solder all cables and put module inside the radio. Do you recommend any shielding, additional insulation? Or plastic box will be enough?
I had to use a choke on the 10awg supply wire to my car amp, also have a 5uf film cap right on the alternator.
For $2, get a few of them in case something goes wrong, otherwise, just watch the voltage, as they can’t take more than 5.1 volts.
For $2, get a few of them in case something goes wrong, otherwise, just watch the voltage, as they can’t take more than 5.1 volts.
$6 here, ready car radio with two Chinese 4440 ICs, good for about 15 W / channel.
Loud enough.
If possible, use this kind of arrangement, gut out an old car cassette player, use the front panel for this, and feed the amp section from this module.
7805, and a diode, is enough, and inductors etc. for noise, as phase suggested.
I blew one when I kept the PCB on an aluminum heat sink...
After hearing it, you might feel like using these in other gadgets, so get some extra.
I blew one when I kept the PCB on an aluminum heat sink...
After hearing it, you might feel like using these in other gadgets, so get some extra.