Develop Bugs

Need a Car adapter that will take Bluetooth Stereo audio from my Droid then go to FM?

I want to use my Droid Charge to beam audio through Bluetooth to a car adapter receiver that plugs into my cigarette lighter.. then this same adapter will send the audio via FM or whatever wireless into my car stereo's built in head unit...
is there such a device made?
how does the sound quality sound?
I can't rip out my stock head unit in the car... and I do NOT have an AUX input jack on the stock headunit.. so I want to do this all wirelessly if possible..

Great idea! Never heard of such a device but if one exists I'd buy it, if not someone should make it!

Soldering an AUX input with minijack that you plug to your phone sounds like HELL LOT easier and HELL LOT cheaper than any such device you want.

The best solution for what you want is the Motorola t505.
If not you could install a auxiliary input from these guys.
www.pie.net/
I bought one for my car for $45 and it works great.
You can also checkout dealextreme for some cheap deals bit it takes a few weeks to get here from china.

I've got a Jabra SP700 that is great for the job.
It recieves audio/calls from the phone over bluetooth and has a built in FM transmitter for the radio.
Sound quality on both ends of the conversation is excellent (even when using it's built in speaker), as is audio streaming.
It just clips to your sun visor but is small enough to slip into the glove box/door tray out of sight, and has the same micro usb charing port that my phone uses so no need for a second charger in the car, and battery life is great.
It automatically turns the FM transmitter off if it recieves no audio for 10 minutes, and turns itself off completely if not connected via bluetooth for 10 minutes.
Changing FM frequency to find a clear spot is dead easy, as is pairing/answering a call.
It reads out the phone number when someone calls you.

I think this may be what you are looking for. Its called a venturi mini. I though about bying one last year but bought a headunit with bluetooth instead.
http://www.amazon.com/Venturi-FNVMS4001-Mini-Bluetooth-Transmitter/dp/B00133BOAI

Best 3.5mm Bluetooth adapter for my car

Can anyone recommend a good 3.5mm Bluetooth adapter for my car.
Sent from my SPH-D710 using xda premium

I got the scosche by adapter from walmart for $36. It plugs into the 3.5mm jack and works well for audio streaming. Calls not so much.
Dicho por el E4GT de Latinmaxima con Tapatalk.

All bluetooth adapters suck. I've tried 10+ different A2DP capable adapters over the course of 2 years and all simply ruin the high frequencies. Nothing beats hardwired Aux cable if you actually care about sound quality...

Google "tunelink"
A little pricey, but worth it for the audio quality. Plus, it is only for streaming audio.... No speakerphone function...

pojieps said:
Google "tunelink"
A little pricey, but worth it for the audio quality. Plus, it is only for streaming audio.... No speakerphone function...
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Sorry, but this is just a gimmick for those without knowledge in my opinion. Other than the bluetooth function, which there are a million of those out there, a person could just plug a male to male 3.5mm stereo plug into the phone to the AUX port in the car if its available.

chrisnosleep said:
Sorry, but this is just a gimmick for those without knowledge in my opinion. Other than the bluetooth function, which there are a million of those out there, a person could just plug a male to male 3.5mm stereo plug into the phone to the AUX port in the car if its available.
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I actually own it... I get WAY better quality over the bluetooth connection than I do with a direct line in. The headphone jack on your phone is designed for just that... headphones. Lining in directly reflects this. Wish there was a way for you to give it a try. I am kind of a sound snob, and I love mine. Plus, all you have to do is get in the car and once the bluetooth pairing happens, the app will open your music app and start playing.
Not trying to push this thing on ya. Just wanted you to know, I own one, and I am not "without knowledge"

Motorola Rokr T505 is small, does well with calls and music playing through blank FM stations to your car stereo. Best $40 investments plus NO CHORDS!

I had this one and used it with my EVO. Worked pretty well.
http://www.amazon.com/Miccus-BluBridge-Mini-Jack-Bluetooth-Bluetooth-Enabled/dp/B0038MA11U

I tried an AUX cable on three different phones. There was always a high pitched whine through my speakers. I started using a Samsung HM3500 plugged into the same AUX jack and got better quality music with no whine. Plus, no extra cable running through my car to the dash mount.

Did you guys all just have a car stereo that had bluetooth built in? I have an '05 Bonneville GXP but the stereo has neither a aux port or bluetooth capability...Major sad face...I really don't want to replace the stereo either because it's nice and fits the look of the car - would look stupid with anything other than a big touchscreen replacement and that's just too expensive.
Any suggestions?

You could get an FM modulator that would allow you to add a line in via your radio antenna, but they don't have great sound quality.

DutchDogg54 said:
Did you guys all just have a car stereo that had bluetooth built in? I have an '05 Bonneville GXP but the stereo has neither a aux port or bluetooth capability...Major sad face...I really don't want to replace the stereo either because it's nice and fits the look of the car - would look stupid with anything other than a big touchscreen replacement and that's just too expensive.
Any suggestions?
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Yes, just swap out the headunit for one with bluetooth build-in. Just make sure it supports A2DP (music streaming over bluetooth). I got mine from Amazon for $140, Sony MEX-BT3900U, and it been simply great. A2DP for bluetooth streaming, Aux port for wired 3.5mm audio, and it has USB port for charging the phone.

High Pitched whine is a POWER ISSUE
unplug your phone and it should go away. IE change chargers.

nerys71 said:
High Pitched whine is a POWER ISSUE
unplug your phone and it should go away. IE change chargers.
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Not all the time. My car had that problem and there were many other factors at fault.
Here are few things to look out for:
If your car has an amplifier in the rear, make sure that the headunit-to-amplifier audio cables are at least few feet away from power wires (aka, run them on the opposite side of the car than the power cables).
Make sure that the headunit is properly grounded. If that still doesn't help, run both headunit's + and - power wires directly to the car battery.
If problem still persists, repeat #2 but for the amp (if you have it).
If all above failed, it's time to invest in a better headunit. Your old one sucks and can't suppress the noise generated by the chassy/alternator.
I had crappy stock headunit and weaka$$ stock amp that would always make the static and constant whine problems. Ended up completely redoing the car audio system. Now, even with the headunit not grounded audio quality is PERFECT.
Here are the prices for my audio remodeling, all items bought brand new:
- Sony MEX-BT3900U. Headunit with CD, Aux, Handsfree Phone, Bluetooth A2DP audio, USB ($140)
- Hifonics ZXi80.4. Amplifier with 4 channels, 80W RMS per channel ($134)
- Alpine SPS-600 speakers. 6.5" 2-way speakers, 80W RMS ($50 ea)
- Stinger Pro 3 Series Snake. 6-channel, 20 feet RCA snake that goes from headunit to the amp in the rear ($35)
- 2x22' 8AWG battery-to-amp power wire
- 2x18' 12AWG amp-to-headunit power wire
- 4x18' 16AWG amp-to-front speaker wires
- 4x2' 16AWG amp-to-rear speaker wires
- 30A fuse in the engine bay
I ran the power cables on the left side of the car and ran the RCA snake on the right. everything was exactly $525 and I did all work myself (it's quite easy if you ask). now the sound quality in my used-to-be-audio-hell car is dam near perfect now and has absolutely no noise/static at all. you can jack the volume up crazy high without any distortions for like 80Hz+. 80Hz and below can be a problem when maxing out the volume as the speakers are only 6.5" and weren't meant to deliver bass. don't get me wrong, they do make nice bass but just don't handle it too well when playing it very loud.
after years of running this setup I'd say this was one of the best investments i've ever made. my car is built for drifting so it is setup very stiff and shakes/jumps like crazy when dailying (300mi/week) and when i do take it out for a spin the amount of stress it sees it crazy. after all this time you'd think at least some wires would come loose but nope, everything is still running perfect.
so yeah, if you actually care about sound quality in your car and would like it to last, just redo it from scratch. it's fun and is totally worth it

Not trying to pick a fight but lets be clear here
If your car has an amplifier in the rear, make sure that the headunit-to-amplifier audio cables are at least few feet away from power wires (aka, run them on the opposite side of the car than the power cables).
Which is a power issue
Make sure that the headunit is properly grounded.
Which is a power issue
If that still doesn't help, run both headunit's + and - power wires directly to the car battery.
Which is a power issue
If problem still persists, repeat #2 but for the amp (if you have it).
If all above failed, it's time to invest in a better headunit.
Which is a power issue
Your old one sucks and can't suppress the noise generated by the chassy/alternator.
Which is a power issue
See what I mean?
Cars make a lot of "NOISE" this noise is a power issue. it comes from your alternator and your coil and your spark plugs IE "POWER ISSUES"
if you have bad grounds or are lacking noise suppression (cheap equipment old equipment etc.. etc..) or an older car making a TON of extra noise etc.. etc..
Power inverters (especially cheap ones) are notorious for "dirty power" that lets in noise.
when I power my phone off the USB on the cheap inverter's USB port I get big time whine noises painful even.
use the USB port in the radio and I get no noise (but then it tries to "READ" the phone instead of just charging it and won't let me use aux hehe
Sometimes you can get a coil thing to add to power to reduce this noise but usually its just cheap equipment ($7 power inverter
plug a 110v to usb adapter into same inverter and no noise. The 110v adapter isolates and prevents the noise leakage.

nerys71 said:
Not trying to pick a fight but lets be clear here
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haha time to clear up a misunderstanding here. my reply was referring to the "unplug your phone and it should go away" statement and thus assuming that you, by saying "its a power issue", were referring only to the inverter that was powering the phone at times getting a better quality inverter (aka, one that has capacitor or capacitor-pack to smooth out the voltage spikes and noise) is sufficient and at times it is not. I've experienced both. it's also worth mentioning that after redoing my sound system even the crappiest of crap inverters works just fine

frifox said:
Yes, just swap out the headunit for one with bluetooth build-in. Just make sure it supports A2DP (music streaming over bluetooth). I got mine from Amazon for $140, Sony MEX-BT3900U, and it been simply great. A2DP for bluetooth streaming, Aux port for wired 3.5mm audio, and it has USB port for charging the phone.
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Yeah, I've looked into those kind of replacements...plenty out there for reasonable prices but they would completely mar the aesthetic value of the nice interior of my Bonny. That's why I was saying that only the touchscreens that would fill the whole double (might be 1.5) din stereo spot in my car would do.
Thanks, both of you guys, for your responses...guess I'm stuck waiting till I get a much newer car

I'm not saying that you're wrong about it being a power issue, but the BT headset I mentioned came with an adapter for an AUX jack and that solved my problem. So, either solution works.

the issue is the radio is connected to the same "power source" that your "phone" is now connected to.
so if any component in that chain does not control the power noise (that is what the noise is coming from your power system)
you INJECT that noise into your audio stream the moment you "link" the devices together (power not audio)
this is why if you use a seperate battery pack to charge the phone you will not get this noise. your battery pack is "isolated" from the car's power system literally physically.
I am only talking about the typical whine pop crackle high pitched noise you get the moment you plug in your charger. IE clear no noise plug in chargers Head burster sounds start coming out of your speakers
that noise is a "power issue" you can't eliminate the power issues (except by eliminating your alternator??) but you can filter it. some devices (chargers) do this better than others
the BT unit works because you "broke" the chain. (no audio cable going from the PHONE to the RADIO)

Again, I'm not denying what you're saying. You're absolutely correct. However, OP was asking for the best BT unit to plug into the jack, not how to solve the issues with cables and power sources. I was simply providing my opinion and experience along the lines of what he was asking for.

DIY FM Antenna With 3.5mm Audio Jack

This is not something new and have been shown many times in YouTube. It is interesting to have for any phone with 3.5mm audio jack that can be easily done within a few minutes. I do not use my headset with my phone so this would be a nice hack to have around to listen with your friends on some local radio without consuming your data plan and phone battery.
Find a headset that you do not need. We only want the part with the 3.5mm audio jack. Just trim it down to about 20cm in length and fold it in half and tie a knot at the end. I tied a lasso knot at the end just so I can adjust the length of the receiver later on though it may not help much in reception quality.
Tested several length from 1 meter all the way to 20 centimetres and found not much difference in reception quality for a fact that you will be using your loudspeaker to listen to the FM radio. The same with whether to loop or not to loop the receiver but looping the receiver gives it a cleaner look while maintaining the same reception frequency.
Putting your phone too close to a human body greatly interferes with the FM signal. On the other hand, placing your phone on a metal table may enhance the FM reception.
Perhaps those who have knowledge in electronics can shed some light to optimize this simple hack further.
Have fun...

I didn't know. Works like a charm !! Thank You

Doesn't work for me. When I plug in the trimmed headset cable with the ear pieces cut off, the FM App keeps asking me to plug in a headset. Works OK when I plug in an untrimmed headset and switch to speaker in FM App menu.
Is there a further trick to getting this to work? Are you using the stock FM App?

I had the same problem myself, and it stems from the fact that smartphones will interrogate any headset you plug in to check if it is suitable. There are basic stereo headphones with three contacts on the jack plug (from the tip they are left, right and ground) and should work on any phone regardless. But there are two variants of headset (i.e. those with a microphone) that use four contacts, the difference being whether they connect the mic on the third or fourth contact.
As of 2016 most manufacturers have standardised on one system (left, right, mic then ground), but there are enough older phones and matching headsets out there that use the alternative pinout scheme. For example my old Sony Xperia used L-R-G-M (the same as say Blackberry), necessitating the use of an adapter for certain accessories. My latest Z5 however, has moved to the L-R-M-G pattern, which means I can no longer use my favourite old Sony headset anymore, not even as plain headphones, the Z5 just refused to talk to them.
That explains why a dumb wire might not work with a smartphone, because it is looking for a signal loop on all four (or three) contacts to try and figure out what's been plugged into it. The solution is to short out the wires to fool the phone into thinking there actually is something on the other end. Simply bare all of the wires at the cut end of the cable, burn off the fine lacquer or cotton that is used as an insulation, then twist the wires together to short them all to the ground. Better still, solder them together and cover with a bit of heat-shrink for a proper finish.

Found some pre-made antennas in ebay, you can try searching for 3.5mm antenna. They look pretty decent. I am also looking for compatible antenna, if any, that is compatible for steven303's new headphone jack.
Edit: did some research and found that the 3.5mm steven303 mentioned is called '3.5mm 4 conductor' or 'TRRS antenna 3.5mm', you can try searching for them in ebay or look for similar ones lying around with wires long enough to be loops around to be used as antenna for new phones with the new type of head jack.
I got two item I think can be suitable for this purpose; search with the following keyword in ebay;
1. 3.5mm 1/8'' Male To Male 4-Pole 3 Ring TRRS AV Audio Extension Cable 1.2M/4Feet
2. 4-Pole 3Ring TRRS 3.5mm (1/8'') Male To Female AV Extension Cable 3FT/1M Black

I have an additional issue. I use my phone's fm radio feature with an old pair of headphones for an antenna and listen via blue tooth headphones when I'm running or just working around the house, etc. My problem is that as the phone moves around in my pocket, the movement causes the phone to think the headphones came unplugged for a second and the radio turns off. When that happens I have to take the phone out and turn the radio back on. This happens often enough that it is a pain in the neck.
A separate but related issue. With some old, non functioning headphone cables the phone doesn't think there is anything plugged into it. I am lucky in that my phone gives me the option to "Play anyway through speaker or bluetooth". So even though it thinks there isn't anything plugged into it, I do, and I have good FM reception.
Here is what I want: I want to know what to do to my old headphone wire so that my phone doesn't think there is anything plugged into it when it is, in fact, plugged in. I hope that makes sense!

FM transmitter

Would it be possible for our phones to have a FM transmitter so we can wirelessly play music through our car without a cord/attachment? Or does our phone simply not have the software to be able to?
Sent from my SPH-D710 using XDA

I think it's more an issue with hardware, not software.
Luckily, if you search Amazon, there are a lot of cheaper ones you can find that work pretty well. I unfortunately have a car deck that does not have the AUX input (it does allow me to plug my ipod in through the glove compartment though) so I know what you're going through.

Ummmm... Ok?

I also do not have an AUX input, but today I just installed this into my car (the itrips, etc. just didn't do the job) and I am loving it. It wasn't as smooth a install as I would have liked, but the quality is far superior to the wireless ones.
http://www.amazon.com/PAC-IS32-Modulator-Charging-Audio/dp/B004613FCE/ref=sr_1_1?ie=UTF8&qid=1344913514&sr=8-1&keywords=is32

There are many 'Headphone jack' FM transmitters out there.. Most by Belkin, Scosche, Koss, etc will be along the same quality and roughly the same $40ish bucks. There are actually a couple Bluetooth visor-clip handsfree adapters now that have the Bluetooth music profiles and an FM transmitter built in if you dont want an extra dongle hanging out of the phone. I have a Jabra laying around that does that and it worked pretty well.. I used it before I bought a built-in speakerphone kit.
--- Umm seriously, why do I have to wait 5 minutes to edit my own post? That's just stupid.

I bought a belkin for my sister for her birthday and had to return it because the sound is terrible but then I found one at walmart for about $30 in the automotive department and it sounds as crisp as if is connected in an auxiliary jack, it also as a usb port to charge your phone and if I am not mistaken it can mount your phone giving it control, and if you have a well placed light or charging position it would be convenient, it also has slot to mount a regular sd card directly... it has a display with controls and remote control included.
world wide web dot walmart dot com /ip/Scosche-FM-Transmitter/16652629

I bought an install kit like the one posted from amazon. It puts a little ground noise in the speaker, especially if I use the charger simultaneously. It's all strapped in, inside the console, and my six foot cord comes out of a small hole in the back the cd pocket under the radio.
The right way to do it would be to power the modulator directly from the battery, not the radio fuse. And maybe even a power-line filter depending on how the modulator acts. But who has time for that?

Streambot Z bluetooth FM transmitter + discount code

If you have an old car without bluetooth or AUX and you wish you’d be able to listen to music from your phone in your car, then FM transmitters are a solution, and this is one of the best I’ve tried.
I’ve used several FM Transmitters before, and one like this one. With FM transmitter, you need to set the same radio station on both your radio and the transmitter, making sure the station is clean and not in use. This way, the device connects to the radio and you can listen to your music through it.
With this particular one, you also get bluetooth to connect to the device, so you don’t have to use a 3.5mm audio cable and instead get wireless connection to the device and radio. You can hook it up the car’s charging port, and it has a USB port so you can charger your gadgets with it.
This transmitter has a button that works as power and pairing. The LED light indicates when it is connected or in pairing mode. It also has buttons for skipping songs, a radio frequency rocker at the bottom, as well as a volume rocker at the top.
Usually FM transmitter do the job with some interference, but after a several days of testing, I still haven’t experienced any interference at all. The quality of the sound is almost as good as if it was hooked up directly to the radio with an audio cable.
The volume though was a little lower than with other non-FM Bluetooth transmitters, but that makes total sense.
If you're looking for something like this, you can get this one with $6 off using code ZK9M4UHZ, valid until May 31st.