Develop Bugs

[Q] Helmet Handsfree Wiring - Nexus One - Plz enlighten me

Hello,
I read this forum for quite a long time but never had a chance to register or post. Please forgive me for coming in with questions.
Okay... I want to connect my Nexus One to my Nolan N-Com Basic Kit, but I can't find a suitable ready-made cable for that.
And then I:
Bought two BlackBerry handsfree (Chinese made - $3.42 each)
Cut them below the microphone/button part
Connect the four cables in it
Pictures speak better than words:
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Okay, and now here's the problem:
If the cables are just separated like that, the sound is weird, low, and ugly
If I short Red and Green : Pause/Play/Ffw/Rew*
If I short Red and Blue : Pause/Play/Ffw/Rew*
If I short Red and Yellow : Pause/Play/Ffw/Rew*
If I short Green and Blue : Dead - No sound
If I short Green and Yellow : Sound's OK, loud enough, but still a bit weird (like either left/right channel is gone/low although both of the speakers works).
If I short Blue and Yellow : Sound's OK, loud enough, but still a bit weird (like either left/right channel is gone/low although both of the speakers works).
* Pause/Play/Ffw/Rew means sometimes it pause/play/fwd/rev the song, can't understand why, and sometimes it's also reboot the phone
I'm now using the Green and Yellow short, because it's the one that sounds better on most songs.
My first question:
What to do to at least make the sound alright? I crack open and look at the original BlackBerry wiring but got confused. There're R-G-B-Y cables going to the button/mic casing (the cables that I use), and then there're G-B-Y-Y going out from the button/mic casing to the earphones.
My second question:
I really want to have the original (Nexus One) handsfree's functionalities. Having buttons in the cable to receive/hangup phone calls and to play/pause/rew/ffw songs. Is there a wiring diagram for Nexus One's Handsfree somewhere?
Thank you.

I have a similar Problem, I bought a 4-pin 3.5 cable, which works perfect with the Computer, but not with my Nexus One. There is sound, but its horrible...
Do you got a solution for your Problems?

Hi,
Yes I ask a guy in a local electronics workshop to do the work for me based on the attached diagram in this post.
hackaday dot com/2010/11/03/patching-into-android-music-control/
So it needs some resistors, switch, etc., which is beyond my expertise.
Good luck!
ps: sorry for the new-user-spam-prevention workaround

yofazza said:
What to do to at least make the sound alright?
Click to expand...
Click to collapse
I'm not familiar with your hardware but you may have the speakers grounded through the mic+ wire. Is there a screen on your cable? That might be the real 0v connection.
yofazza said:
I crack open and look at the original BlackBerry wiring but got confused. There're R-G-B-Y cables going to the button/mic casing (the cables that I use), and then there're G-B-Y-Y going out from the button/mic casing to the earphones.
Click to expand...
Click to collapse
Your description of the wiring suggests to me that:
G and B are left and right speaker+
Y is 0v
R is mic+
HTH.

Like happy jack said, it looks like the green and blue are left and right (+)
Red is mic +
and "Yellow"(looks like copper) is ground (-)
If the cables are just separated like that, the sound is weird, low, and ugly
Click to expand...
Click to collapse
It probably is because the pin configuration is different in the nexus one and the helmet.
Try to do this:
If that doesnt work, then you need to do something more advance that I dont know about.
If you want to just make the speakers work, you could just buy an stereo extension (plug with 3 pins to plug with 3 pins), or try to do this:
Solder both the red and yellow cable or just the yellow and dont solder the red one.

Hey guys, thanks for the replies, but I have the problem solved a few months ago by asking a technician to do the work for me based on the attached diagram.
I got the diagram from some blogs. Link is on my previous post, and here's another one:
wisebread [dot] com/build-a-cable-to-control-your-android-phone-while-you-drive
And although the diagram is for a TRS to TRRS conector, it's sufficient for the technician to create a connector cable that basically works like the original N1 handsfree, but without the microphone (because the micropone line is passed along the whole cable to be used by the helmet's microphone).

I got it.
As sotodefonk mentioned, N-Com and the Nexus One have different pin configurations. With the Information from yofazza, I was able to figure out which cables have to be crossed. Now the Sound is good, and the mic works!
Thank you guys!

[Theory] Better Reception

So I was looking at the tear down of the phone at ifixit and noticed this
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Notice the w1 w2 and r1 marking with the holes. To me that seems like a receptacle for antenna cables like on a wifi card for a laptop. What frequencies do you guys think that's for?
i'm guessing the w's are either wifi or wimax but i'm not sure about the r1. as well as if it's for the general radio in the phone could there be a potential way to plug in an antenna to increase the surface area of the antenna to increase the signal.
These are my two cents.

morphis568 said:
So I was looking at the tear down of the phone at ifixit and noticed this
Notice the w1 w2 and r1 marking with the holes. To me that seems like a receptacle for antenna cables like on a wifi card for a laptop. What frequencies do you guys think that's for?
i'm guessing the w's are either wifi or wimax but i'm not sure about the r1. as well as if it's for the general radio in the phone could there be a potential way to plug in an antenna to increase the surface area of the antenna to increase the signal.
These are my two cents.
Click to expand...
Click to collapse
Don't do it. The impedances on those antenna leads need to be very precise...any change in the resistance will totally throw that off and you risk destroying the radio in question. (3G/2G, 4G, Wifi I think)

Read it here
http://forum.xda-developers.com/showthread.php?t=1273292

daneurysm said:
Don't do it. The impedances on those antenna leads need to be very precise...any change in the resistance will totally throw that off and you risk destroying the radio in question. (3G/2G, 4G, Wifi I think)
Click to expand...
Click to collapse
First. Thank god before i posted. I assumed ones from a laptop on't work but I've got some from an old lg vu that i thought may do the job.
Second would there be a way to measure that? I've got the concept planned out already. If there is someone who is good with this stuff i'd be more than happy to explain the idea further. The other thing is if the way i'm thinking about it is possibly it will add virtually no size to the phone.

justwonder said:
Read it here
http://forum.xda-developers.com/showthread.php?t=1273292
Click to expand...
Click to collapse
Answered all my questions.
Thanks
To bad though. :/

I tested the connectors and this is what I found:
R1 - cell radio. All cell communications use this port and the circuit trace leads to the actual antenna is at the bottom of the phone. One of these days, I will find the frequencies it uses so I can make a proper external antenna.
G - GPS antenna, jack hidden under the antenna at top of the phone. There is no opening on the back due to the size of the antenna.
And I am still trying to pinpoint where wifi is from. Connecting an antenna to the W1 and W2 jacks has no effect. I set up a constant scan for fast graphing of the signal. Narrowing this down has been elusive. I have built wifi antennas for years and this boggles my mind.
Large antenna left of the camera and the small one to the right. No external port and had no effect on wifi. Bluetooth? More antenna diversity for wifi?

I have been wondering which is for what for the longest time maybe I will try hooking some antennas up to them and see if there is any changes.
Sent from my SPH-D710 using Tapatalk

dattaway said:
And I am still trying to pinpoint where wifi is from. Connecting an antenna to the W1 and W2 jacks has no effect. I set up a constant scan for fast graphing of the signal. Narrowing this down has been elusive. I have built wifi antennas for years and this boggles my mind.
Large antenna left of the camera and the small one to the right. No external port and had no effect on wifi. Bluetooth? More antenna diversity for wifi?
Click to expand...
Click to collapse
one of the W's for WiMax perhaps? that's what i'd love to add an antenna to..

so on a similar topic, whatever happened to someone testing out whether placing a strip of aluminum foil under the cover strengthening the radio signal?

ppcpirate said:
so on a similar topic, whatever happened to someone testing out whether placing a strip of aluminum foil under the cover strengthening the radio signal?
Click to expand...
Click to collapse
what are you waiting for?

This is what your looking for. http://www.wpsantennas.com/WA-1071-Samsung-Skyrocket-Galaxy-S-II-SGH-I727-Antenna-Adapter-Cable.aspx

I was wondering for the longest time what those ports are for. So could I get an external antennae set up at my house for better signal? This would help with wifi tethering
Sent from my SPH-D710 using xda premium

true story with the vibrant ( galaxy s 1 ) which had horrid gps due to hardware the fix was an antenna connection fix off a very similar port.

kawaski47 said:
I was wondering for the longest time what those ports are for. So could I get an external antennae set up at my house for better signal? This would help with wifi tethering
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
Not if you want a working phone. Using those ports can kill the radios.
Sent from my SPH-D710 using xda premium

I've already tried it! Doesn't work!!
Sent from my SPH-D710 using Tapatalk 2

Screen replaced now hardware problems

Hi, I have replaced the screen of my DHD with this producht Click. But now I have big issues with my phone. My Wifi won't turn on. When I press it to turn it on I get an error and also the bluetooth won't turn on. When I press it, it keeps trying to turn on but nothing happens. My GPS turns on but can't find any signal and the lights on the touch button's dont turn on. Can someone please help me with these problems?

niyesuh said:
Hi, I have replaced the screen of my DHD with this producht Click. But now I have big issues with my phone. My Wifi won't turn on. When I press it to turn it on I get an error and also the bluetooth won't turn on. When I press it, it keeps trying to turn on but nothing happens. My GPS turns on but can't find any signal and the lights on the touch button's dont turn on. Can someone please help me with these problems?
Click to expand...
Click to collapse
thats a big problem, but most development here on xda is software, not hardware est bet would be to recheck everything is connected completely, when ever a screen breaks, your best bet is to usually just upgrade, hardware is hard to modify.

It's not that I'm 100% sure that the hardware has problems, but it happened after I changed the LCD etc. So it has to be because of that. Can someone tell me which part of the motherboard is the wifi so that I can check it for damages etc. or are there other things that I can do in order to try to fix it?
Thank you in advance.

I thought the WiFi/cellular antennas are somewhere in the upper part of the phone.
Usually it's some kind of wire running along the edges.

I thought GPS was on the led surround Bluetooth was on the battery cover
Sent from my HTC Desire HD using XDA App

Zulake said:
I thought the WiFi/cellular antennas are somewhere in the upper part of the phone.
Usually it's some kind of wire running along the edges.
Click to expand...
Click to collapse
Hi, I have 3 wires there, 2 black and 1 white, do you know which one it can be and how I can fix or replace it?

Hi, this is the inside of the phone, can someone show me which part the WiFi is?
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Can you take some pics???
CU AssiY2K

Of what do you need a picture?

the gsm/3g antenna is in the sdcard/sim-cover
the wifi antenna is in the battery cover
and the gps antenna is in the cover on the side of the camera that includes the lenses for the LED flash

@ niyesuh: I couldn't see the picture you have posted. In this afternoon I was at work and there is the internet connection firewalled. But now I can see it.
Dlog is right.
Are you sure that all connectors do have right connection? The battery flap has to be mounted if you want to test WIFI.
CU AssiY2K

Dlog said:
the gsm/3g antenna is in the sdcard/sim-cover
the wifi antenna is in the battery cover
and the gps antenna is in the cover on the side of the camera that includes the lenses for the LED flash
Click to expand...
Click to collapse
Can you show me the wifi antenna on the picture I uploaded and also the wifi cable pls?

AssiY2K said:
@ niyesuh: I couldn't see the picture you have posted. In this afternoon I was at work and there is the internet connection firewalled. But now I can see it.
Dlog is right.
Are you sure that all connectors do have right connection? The battery flap has to be mounted if you want to test WIFI.
CU AssiY2K
Click to expand...
Click to collapse
Yes, all the connection's are connected correctly and the battery flap is also mounted well. I think I broke something while replacing the screen, but what could it be?

Also the Wi-Fi MAC-adres isn't available.

Hi, i had the same problem today.
I solved lifting a little the metal contacts under the two plastic covers (wasn't sure about which one was for the wi-fi/bluetooth antenna)...

[Video] Hardware fix lag shield remote 2017 with mod antenna

I have been mod my shield with external antenna. i work perfect, faster respond with all function.
Sorry my english.
You can view here
After mod, test all function with far ~5m
New update i make fake shield cans
https://i.imgur.com/RJeRFj9.jpg

Which antenna you used for the mod?

pascalguth said:
Which antenna you used for the mod?
Click to expand...
Click to collapse
i use GPRS antenna, for better you should use any antenna Wifi

Just did this, used an antenna from an old d-link router I had laying around.
And wow it works great! Now I can actually use my Bluetooth xbox controller without pointing it at the shield while sitting 1 meter from it ?

mLgz0rn said:
Just did this, used an antenna from an old d-link router I had laying around.
And wow it works great! Now I can actually use my Bluetooth xbox controller without pointing it at the shield while sitting 1 meter from it ?
Click to expand...
Click to collapse
Congrats :good:

Nice I will try it. Another question. Am I guessing right that the antenna on the other side is the wifi antenna? Because I also want to improve the wifi signal of the shield.
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pascalguth said:
Nice I will try it. Another question. Am I guessing right that the antenna on the other side is the wifi antenna? Because I also want to improve the wifi signal of the shield.
Click to expand...
Click to collapse
I don't know it. but i measurement this point connect with GND

Ok. How did you found out the other one is the bluetooth antenna?

pascalguth said:
Ok. How did you found out the other one is the bluetooth antenna?
Click to expand...
Click to collapse
In bottom PCB I remove shield cans, i can see name IC wifi & bluetooth (It's name Broadcom BCM4356, you can search datasheet on google).I guess that is bluetooth antenna (maybe this point for wifi antenna). i soldering external antenna and test with remote

Here overview in datasheet
The Cypress CYW4356 single-chip device provides the highest level of integration for a mobile or handheld wireless system, with
integrated IEEE 802.11 a/b/g/n/ac MAC/baseband/radio, Bluetooth 4.1 + EDR (enhanced data rate), FM receiver, and Alliance for
Wireless Power (A4WP) support. The wireless charging feature works in collaboration with the Wireless Power Transfer (WPT)
BCM59350 front-end IC. It provides a small form-factor solution with minimal external components to drive down cost for mass
volumes and allows for handheld device flexibility in size, form, and function. Comprehensive power management circuitry and
software ensure the system can meet the needs of highly mobile devices that require minimal power consumption and reliable
operation.

Jackie393 said:
I have been mod my shield with external antenna. i work perfect, faster respond with all function.
Sorry my english.
You can view here
After mod, test all function with far ~5m
New update i make fake shield cans
https://imgur.com/RJeRFj9
Click to expand...
Click to collapse
What happened to the videos? I am looking to do this mod but can't find a photo or video on the whole internet!

Boison PX6 Android 9.0 4+64GB Wifi Antenna

Hi
I recently bought a new Android head unit for my Renault Clio and have been going over a few things before i install and was surprised to see the wifi antenna is just a single wire that comes from one of the output plugs on the chassis. On all my previous head units there's been a gold RP-SMA type connector to attach an antenna to.
Heres the Unit I purchased: https://www.ebay.co.uk/itm/1-Din-Autoradio-Android-9-0-Car-GPS-Stereo-Audio-10inch-4G-64G-HDMI-AUX-Wifi-OBD/183972485630?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
My questions are;
Is this new single white wire (antenna) out the back of the units chassis enough to pick up a signal? & if not:
How do i go about modifying it? In my car i have two 'blade' type adhesive antennas in the A-pillars of the car which gave great wifi reception with my phone tethered in the glove box. I can't help but think this new unit may be a bit of a step down in wifi performance.
Could a possible solution be to connect (via one of the USB connectors) an RP-SMA type antenna like this but for Android, does such a thing exist as i don't want to fit a usb dongle since i have unlimited data on my phone.
https://www.ebay.co.uk/itm/High-Speed-USB-Wifi-Adapter-Wireless-Antenna-Dongle-For-Smart-TV-Box-Openbox-PC/303239475128?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
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*EDIT* Or could i solder a pig tail lead (like the one below) to the head units wifi antenna wire to make use of my existing blade antennas:
Thanks
Roger (UK)

WiFi antenna mod
eunavi head unit is the same as Bosion!
I disassembled my radio I eliminated single wire (useless) I soldered a pigtail (RP-SMA female ) on the mainboard and I inserted a small wifi antenna! now the wifi signal is much more powerful and I can finally connect the radio to the home wifi

pinotuning said:
eunavi head unit is the same as Bosion!
I disassembled my radio I eliminated single wire (useless) I soldered a pigtail on the mainboard and I inserted a small wifi antenna! now the wifi signal is much more powerful and I can finally connect the radio to the home wifi
Click to expand...
Click to collapse
Cheers, I ended up doing the same but soldering on an RP-SMA connector onto the end of the wireless cable that poked out the back. It worked a treat. Overall i'm very impressed with this unit compared to the Xtrons unit i have in my van, the only problem i'm having is no DAB without tethering my phone despite having a USB DAB module plugged in in the glove box.
Roger (UK)

Hi friend ?
it can also work as you did...
the antenna cable is composed of 2 cores of wires! the internal wire is the signal (on the radio it was that stupid wire)
then there is the ground cable to be connected on the radio chassis! you see my photo .... I soldered the pigtail cable on the motherboard!
my radio works fine but i don't use DAB i'm sorry! I noticed that my radio has problems mixing audio music and navigator .... you have the same problem?
thanks

Cheers PT i'll have another look at that, I've got a spare RP-SMA pigtail so may well open up the radio and go direct from the board like you have. The only problem i have is when i use poweramp it doesn't always shut the radio off so have to open another app to turn radio off that way. Other than that all good and for £130 can't really complain, my xtrons unit was just shy of £300 and is slower.

also i have the same problem with poweramp! i removed the application because i preferred old style apk which worked better in my old eonon head unit!
so you have no problem with audio management when using the gps navigator?
when I listen to music and use the navigator (iGo) the voice feels low and the music increases the volume! consequently I do not understand what to say the voice guide of the navigator!
my radio is the model with dsp (about 220 dollars)
https://m.it.aliexpress.com/item/32...MI6Kn1pIuR6QIVCp53Ch3nMwr1EAsYByABEgKapvD_BwE

pinotuning said:
also i have the same problem with poweramp! i removed the application because i preferred old style apk which worked better in my old eonon head unit!
so you have no problem with audio management when using the gps navigator?
when I listen to music and use the navigator (iGo) the voice feels low and the music increases the volume! consequently I do not understand what to say the voice guide of the navigator!
my radio is the model with dsp (about 220 dollars)
https://m.it.aliexpress.com/item/32...MI6Kn1pIuR6QIVCp53Ch3nMwr1EAsYByABEgKapvD_BwE
Click to expand...
Click to collapse
Navigation wise i use google maps, it quietens the music momentarily when giving directions, you can change this in the settings to keep music up. I havent used the iGo software. So apart from the poweramp problem no other problems, i think i'll tey a different DAB module (got a couple spare) to sort that and maybe point all my music at the onboard player instead of poweramp.

can you take screenshots of your settings to keep music?
i can't ... maybe my firmware has a problem
Thanks

wrong mcu
Hi i flashed the wrong mcu can someone upload a backup?