Database Develop

My home grown carkit

Hi all,
Yesterday I finished building my 0.5 release of an XDA car kit. I put together a few pages you can check out.
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If you want to see the endresult go directly to:
http://www.climber.nl/Project/XDA/Carkit/XDA carkit All built into the car.htm
To see why and how I have done things, check out the top page of this project: http://www.climber.nl/Project/XDA/Carkit/XDA carkit introduction.htm.
The pages don't like nice but hey!! it's my first attempt. Just couldn't wait to show it
Robert[/url]

Hi please could you give me some info on what the capators are on the shematic diagram please? what does the little bit of writting say at the side of it i cant read it because the line is going though im going to try make a working cable the same way you built yours but instead it will have audio out and mic in hopefully if i can try get it to work as far as i can make out they say 1vf is this right? sorry i havent got much schematic knowledge as im only 17 and want to make a car kit for my car with gps too so i can use tomtom to help me get around as i am learning to drive at the moment and when i pass it will help me out alot to get around the UK )
thankyou
also great work mate looks brill. I cant get hold of one of the Ipaq connectors at teh moment because the place you have on ur site has ran out of stock but i opened up my usb cable and most of the pins are missing and only 5 left so i guess i cant use that.

which one of these is suitable mate for this?
http://www.maplin.co.uk/products/module.asp?CartID=030427020133790&moduleno=24646&modulecode=
http://www.maplin.co.uk/products/module.asp?CartID=030427020133790&moduleno=24538&modulecode=
im thinking they are in the 2nd link but which one out of them are they? please could you let me know thankyou or even http://www.maplin.co.uk if they are not right please could you find them for me on here thankyou
regards Gareth
looking athe the xda connector page on here at the h/f kit bit it says 3 x 47p which i have found these.....
SF84F EMIFIL 3 Term 47pF £0.01
Features
• 1205 size 3 terminal capacitors
• Compact and thin
• High level of noise suppression
• Excellent high frequency characteristics
Applications
• EMI suppression in various electronic equipment
• EMI suppression of AC signal lines and DC power lines
• Severe EMI suppression in high impedance
circuits such as digital

That seems about right
Gareth,
Those 4F EMIFIL 3 Term 47pF £0.01 seem right.
The stuff on the other page are what we call ELCO's over here. There are not suited for this particular job.
I recall the page saying 47pF as well. The value of this capacitor determines the frequency characteristics of the decoupling 'filter' we are making here. I had a couple of 1uF 's lying around here.
Since they are cheap you might consider buying both or even a third and see what that does to the sound.
I had good results so far, but you have to keep in mind that I like to drive fast and my car gets rather noisy then :twisted:
Let me know what your results are!
Robert

Any of you guys or girls into car stereos at all?

I do some car stereo stuff away from my dayjob, and if theres any interest, i'd like to share some build pics with you guys.
-Robin

iamamp3pimp said:
I do some car stereo stuff away from my dayjob, and if theres any interest, i'd like to share some build pics with you guys.
-Robin
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I'm into it, tho i dont have a car, but they do interest me

Please do share some.
I'm not huge into it but it is an interest of mine. Besides, I'm sure anyone here can recognize the beauty behind it all.

I use to be real big into it. DB drags and such. That was like 6-10 years ago though. My last system had 3 13" JL w7 powered by 3 JL 1000's... And yes my mother was right, my hearing has gone to ****.

GbrilliantQ said:
I use to be real big into it. DB drags and such. That was like 6-10 years ago though. My last system had 3 13" JL w7 powered by 3 JL 1000's... And yes my mother was right, my hearing has gone to ****.
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Nice.
I still am an active competitor in their newer format, Bass Race......pretty cool if you have the patience.
Here are some pics of one that i just finished up tonight.
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one of the many pics of the build.....
and heres some of the one that i finished up last week.
Both need carpet, and the first one is getting something even more special.
there is an amprack in the top, there will be a flush mounted amp in there.
Let me know what you think.

nice boxes!!! wanna build me one???
I have a passing interest in car audio, just not a huge priority in the budget unfortunately.
This is what I have so far in my car:
dvd receiver with sirius and someday soon, bluetooth
http://www.pioneerelectronics.com/PUSA/Products/CarAudioVideo/In-Dash/DVD-Receivers/AVH-P3100DVD
front speakers
http://www.bostonacoustics.com/Pro60SE-P601.aspx
rear deck:
http://www.bostonacoustics.com/SR95-P627.aspx
Looking at these for the bass:
http://www.bostonacoustics.com/G310-P566.aspx
I already have a box that is in the recommended dimensions for these speakers.
Also, what is a good amp (not crazy expensive) to push these, or is there a better deal on 10inch woofers.
I'm looking for clean sound more than overall thump.
Any suggestions?

your link for the subs returned a server error
and im all about building something and shipping it....lol
Boston is an excellent brand, but compared to their retail pricing, there are better, less expensive options out there.
If youre looking for some ideas, shoot me a PM, i know of a few very good, lesser known companies that I have used, and also that i still use.

try this again. the 10"subs I've been looking at:
http://www.bostonacoustics.com/G310-P566.aspx
I agree, retail they are expensive, but they can be found for half of retail if you shop around.

Meant to edit that post, i clicked a second time and it worked.
They are killer sounding subs for sure. 300/pair isnt all that bad to be honest.

Heart rate monitor watch or device

OK, my problem is the cardio machines I use (I have arthritic knees so running is mostly out of the question) don't have heart rate monitor sensors in convenient places, or the sensors don't work. So I'm looking for a non-expensive solution (I'm ok with going up to around $100 or a little higher, if the reviews on the item are good), either stand-alone or bluetooth so I can use an app on my phone to alert me when I go out of my target zone.
If it's a watch, I would prefer just a watch, no watch+chest strap deals or anything like that. But whatever it turns out to be, I would prefer just a single item, since I'll already have my phone with me and I don't want to look like a walking Radio Shack.
Also, I'm looking for something that can constantly monitor my heart rate. I have a relatively cheap HR monitor watch that I have to first hold in the Mode button, then put my thumb and pointer finger over the heart rate sensors on the front of the watch, and doing that while I'm on the elliptical is a pain in the ass...and dangerous if I lose my balance.
So, any suggestions would be highly appreciated. Thanks everyone!

http://www.digifit.com/what-is-digifit/compatibility/android-heart-rate-monitor.asp
Sent from my Nexus 7 using Tapatalk HD

sfreemanoh said:
.. I have a relatively cheap HR monitor watch that I have to first hold in the Mode button, then put my thumb and pointer finger over the heart rate sensors on the front of the watch, and doing that while I'm on the elliptical is a pain in the ass...and dangerous if I lose my balance.
So, any suggestions would be highly appreciated. Thanks everyone!
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Ha! My dad had one of these. It was pretty cool back then, i wore it to school for a few days.
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I'm not really looking for one now, but if there is a no frills HR monitor watch that comes with a lifetime warranty then i might grab it.

There is a Polar chest strap that can connect to an android device via bluetooth. I tried to post a link to it, but I'm not allowed to yet (I'm still a "newbie"). Just google "Polar WearLink Transmitter with Bluetooth."

Thanks guys, I'll check out the Polar option I think. The reviews are pretty good, and it sounds like it works with a couple different Android apps I already own, so that should work.

sfreemanoh said:
Thanks guys, I'll check out the Polar option I think. The reviews are pretty good, and it sounds like it works with a couple different Android apps I already own, so that should work.
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Let us know how it works out. I'd be interested in getting one myself.

[Q] Do the "stock GS4A earbuds control volume/playback?

I just got a GS4A in somewhat terribad physical condition but it works 100% and it didn't come with any of the original accessories (box, adapter, microUSB cable, and of course the earbuds).
Can anyone that has purchased a GS4A brand new tell me if the stock Samsung earbuds have a volume control in the little remote pod in the cord, and if it can be used for controlling playback as well (Play/Pause, maybe 2 clicks for next song, 3 clicks for Previous, that sort of thing)?
Been searching for an answer but haven't found one yet, not sure precisely which earbuds are included with the GS4A so if anyone can take a picture of theirs or the remote pod (close up/macro image) I'd greatly appreciate it, thanks.

The headset that came with my i9295 has controls, yes, and they work well. I think they can do double-tap for next song in the player I use (poweramp), but don't hold me to that because I got a much nicer set of headphones with my purchase from the store (SOL republic Tracks HD), so I haven't been using the included earbuds much at all.
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Are you talking about the international version or the SGH-I537? I have the I537 and it didn't come with any earbuds...
Sent from my SAMSUNG-SGH-I537 using Tapatalk 4

my-blue-snog-box said:
Are you talking about the international version or the SGH-I537? I have the I537 and it didn't come with any earbuds...
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My international one did, but honestly it wouldn't have been a big loss if it didn't. As most bundled earbuds they are good enough, but nothing to be all that happy about. The shape makes them hang a bit awkwardly in my particular ears, and they seem to get pulled out a lot easier than other earbuds I use. The only reason I use them at all is that they are a compatible headset that is more discrete for use when I'm out on town, rather than my over-ear Tracks HD that I use to listen to music and so when I'm at home.

Wow, AT&T being so cheap they can't toss in a pair of $3 earbuds, good lord.
Oh well, I found some on eBay that claim to be the "real deal" Samsung product, which upon getting them I will promptly disassemble and attach my current Koss earbuds where were previously transplanted onto an iPod/iPhone earbud cable.
Thanks for the info...

br0adband said:
Wow, AT&T being so cheap they can't toss in a pair of $3 earbuds, good lord.
Oh well, I found some on eBay that claim to be the "real deal" Samsung product, which upon getting them I will promptly disassemble and attach my current Koss earbuds where were previously transplanted onto an iPod/iPhone earbud cable.
Thanks for the info...
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Good choice, Koss earbuds are way superior to these. Unfortunately I don't have the tools right now or I'd do the same myself, I have a pair of old Koss where the contact broke that are just waiting for such a project.

[APP][Development] Birdview reverse camera APP using existing camera ONLY

I've noticed that these things are becoming popular,
And I thought why not make one for my Android head unit?
After doing some research in Computer Vision and hacking my car's android, I'm happy to announce that it works
You can see a live demo in my youtube channel - https://www.youtube.com/watch?v=dzpn0ROKkX8
The solution is software only - it uses complex computer vision algorithm (optimized the hell of it for embedded devices) to draw a top view of the surroundings of the car.
It translates rear camera view:
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into top camera view (with memory of previous seen space - its a buch of mathematics that does that inside):
Hope soon to release the app

ValkA said:
I've noticed that these things are becoming popular,
And I thought why not make one for an Androd MCU? (I have a cheap chinese one, some kind of Joying variant I guess)
Existing solutions use 4 cameras with an extra unit that stitches them together or using odometry.
I'm aiming for a software-only solution, using only Android MCU and reverse cam that we already have.
Doing some research on my PC, I've managed to achieve some progress.
You can watch the video in my youtube channel
Managed to open reverse cam with OpenCamera app and even record a video.
For that killing SofiaUIServer process on my MCU was needed coz its responsible for turning on the camera as soon as you hit reverse.
That means that I can write a pure android app that does the bird view (hopefully performance won't be an issue).
Now it's only a matter of time (and will) until I finish that little project on Android.
What do you guys think, will there be a demand for such a thing?
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I am interested in this project.
I have both rear and front cameras. The front camera can be opened only with F-CAM app which does not do recording. It would be nice to have both cameras showing on screen and recording. My system is mtcd based and I am not sure if your app would work.

Update:
I have a working demo in my car which can be seen in this video - https://www.youtube.com/watch?v=jlUI662VCA8

ValkA said:
Update:
I have a working demo in my car which can be seen in this video
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wow, very detail!

HI,
could this work on an Atoto head unit, would you mind to share the app?
Thanks
Frank

Wow, amazing work! Can't wait for the release.
Good luck!