ADVrider

Go Back   ADVrider > Bikes > GSpot > GS Boxers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 07-28-2012, 09:38 AM   #1
kevin g OP
Gnarly Adventurer
 
Joined: Dec 2010
Location: San Diego
Oddometer: 110
Custom Electronics Installation

Now that I have had my 2011 GSA for a while I am starting figure out what I want to add. For travel I need a USB charging capability and I wanted a better amplifier for my helmet speakers. I have 30+ years of military electronics engineering so I decided to make my own. Here goes:


The circuitry is housed in the 2.2"x3.2" box mounted on my TT dashboard. The USB port is up on the left in place of the cigarette lighter socket with a water-tight cap and on/off switch that is IP67 (dust tight and splash tight). The 3.5mm audio input is on the box along with the amplifier on/off and an idiot light that is on when either circuit is powered. The USB port will be active when the bike is off and the audio only when running. The 12V socket is fused with 10 amps. My mini compressor draws about 7 amps peak so this should be plenty. Here is the circuit:

The USB port uses a switching power supply for best efficiency; my phone draws 0.25 amps when charging and my MP3 about 0.2 amps, from the 14V. The audio amp uses a linear regulator so that there is no potential noise that a switching supply might put on the audio.

The amplifier has a volume control that is a click up or down, or slews quickly when held. The output power is about 130mW and will blow your ears apart with my Torx Pro speakers. Great speakers by the way if you are wondering. I always wear ear plugs for the wind noise so I wanted enough power from the amp. The audio draws 60mA at full volume from 14 volts.

I wanted to place the volume control at my left hand so decided inside the hand guard would be a sweet place. I taught myself to make a mold and lay up this nifty carbon fiber switch pod:

The switch is an industrial IP67 click up/down variety. I mounted it in the hand guard using industrial sticky-back Velcro.

The audio output I want somewhere around my left knee. My original idea of tucking it under the edge of the black trim piece has not worked so I have this temporary mount that does the trick.

Eventually I will hit on a better way to mount this. I think it will involve some more carbon fiber in a little pod but the vision has not hit me yet. If anyone has a suggestion I would love to hear it.

All of this is powered through a Fuze Block. I do not like the idea of installing the block under the seat so I did some poking around and found a great place at the back of the beak just under the spot where the auxiliary power outlet mounts. I fashioned a mounting plate from aluminum and used an existing screw and one Adel clamp to hold the plate. After painting the plate satin black it looks like it belongs there.

There is plenty of clearance to the fork leg at full lock and I like the hidden installation. This location does not seem to get as dirty as under the seat so I am not too worried about the environment. Here it is from the top.


So far I am pretty happy with these additions with the exception of the audio output, but it will come to me eventually. The switches and USB connector where samples I got from vendors and are not cheap. The mil spec toggle switch would cost about $100 so if I had to buy a switch I would get an industrial grade instead. The USB switch is about a $25 and would also be great for the audio. The volume switch has an really cool feel and would run about $45 but I just had to find a use for it and it was the inspiration for this whole project.

My friend joked about "leave it to you to design a system around a switch". That's what I did.
kevin g is offline   Reply With Quote
Old 07-28-2012, 09:45 AM   #2
GS Addict
Pepperfool
 
GS Addict's Avatar
 
Joined: Sep 2006
Location: Sunshine Coast B.C.
Oddometer: 3,716
Great job!
__________________
Old enough to know better....
Young enough to try it again
GS Addict is offline   Reply With Quote
Old 07-28-2012, 10:04 AM   #3
LaurelPerryOnLand
Beastly Adventurer
 
Joined: Jun 2009
Location: Denver, CO
Oddometer: 3,477
Congrats...nice work.

Geez...this is exactly HOW small businesses get started.

Did this in the garage?

Available as a kit? When?

Think others might want.
LaurelPerryOnLand is offline   Reply With Quote
Old 07-28-2012, 11:49 AM   #4
hardpackrider
Gnarly Adventurer
 
hardpackrider's Avatar
 
Joined: Aug 2009
Location: San Franciso, Bay Area, CA
Oddometer: 150
+1 on the kit.. :-)

really great install. I've the fuse block.. still sitting in electro wrapper..(saving for GPS), but for those of us with limited electrical kno-how.. this looks like magic. :-) great work, thanks for posting.


Sent from my iPhone using Tapatalk
__________________
2012 GSA - xxx-black ________--- ____ -- .... .. . - . . .

– Every man dies. Not every man really lives. – William Wallace
– I'm working on that Bill... it's why I'm here. – hardpackrider
hardpackrider is offline   Reply With Quote
Old 07-29-2012, 07:52 PM   #5
Poolside
Syndicated
 
Poolside's Avatar
 
Joined: Apr 2003
Location: Long Beach, CA
Oddometer: 11,865
Quote:
Originally Posted by kevin g View Post

Nice job, Kevin! You look like you're an old hand at this. Is that a digital amp and a microcontroller on the audio side?


Quote:
Originally Posted by kevin g View Post

My friend joked about "leave it to you to design a system around a switch". That's what I did.
Seems normal to me!


__________________

IICE Air Hotrod your GS  Fuel Injection  Tech Info  Buy  Order List  Installation
Poolside is offline   Reply With Quote
Old 07-30-2012, 06:32 PM   #6
kevin g OP
Gnarly Adventurer
 
Joined: Dec 2010
Location: San Diego
Oddometer: 110
No Microcontroller Used

There is no microcontroller in the amp. The larger chip is a volume/balance control chip that is commanded up/down by grounding a pin. There is 2dB volume change per click and is slews quickly if held down. The balance feature is not used and the chip always starts in balanced mode.

The amplifier has adjustable gain and an internal charge pump so it generates its own negative voltage so the output has zero DC offset and no large capacitors are needed on the output to keep things small. Both chips are made by Maxim.
kevin g is offline   Reply With Quote
Old 07-30-2012, 07:32 PM   #7
Poolside
Syndicated
 
Poolside's Avatar
 
Joined: Apr 2003
Location: Long Beach, CA
Oddometer: 11,865

Cool. I've seen that Maxim volume/balance part, but not the amplifier. I just had a look, their DirectDrive setup is a pretty nice deal. Good choice!


__________________

IICE Air Hotrod your GS  Fuel Injection  Tech Info  Buy  Order List  Installation
Poolside is offline   Reply With Quote
Old 08-20-2012, 11:36 PM   #8
JayhawkGSA
Gnarly Adventurer
 
Joined: Aug 2007
Location: Loveland, CO
Oddometer: 108
Nice work. I am wanting to do SOME of this and was actually just looking through Digikey for a weatherproof USB solution. I think I found the same one you have.

Any chance of you posting the Eagle file for your PCB?
JayhawkGSA is offline   Reply With Quote
Old 08-21-2012, 07:15 AM   #9
DrogoNevets
Adventurer
 
Joined: Aug 2012
Oddometer: 17
the USB power on/off switch, where did you get it from?
DrogoNevets is offline   Reply With Quote
Old 08-21-2012, 07:35 AM   #10
Unstable Rider
Sick Till Tuesday
 
Unstable Rider's Avatar
 
Joined: Jul 2010
Oddometer: 2,476
Glad you are on our side!

__________________
.
-“Ah, you're wasting you're time. They can't track us over rocks.
Tell them that.......... --Who are those guys?”


~Butch Cassidy
Unstable Rider is offline   Reply With Quote
Old 08-21-2012, 07:55 AM   #11
srpuywa
Big 'G'
 
srpuywa's Avatar
 
Joined: Aug 2002
Location: Puget Sound, WA
Oddometer: 436
I'm sure I could break it!
__________________
IBA 53683
09 R1200 GS ADV
srpuywa is offline   Reply With Quote
Old 08-21-2012, 08:01 AM   #12
genka
SUV hater
 
genka's Avatar
 
Joined: Mar 2010
Location: Baltimore, MD
Oddometer: 1,580
Excellent work! Unfortunately creating useful home made electronics is a dying art.
__________________
.

Форум мотоциклистов в США http://www.xytopok.net/mvnforum/listthreads?forum=31
genka is offline   Reply With Quote
Old 10-05-2012, 11:51 AM   #13
Epictetus70
Gnarly Adventurer
 
Epictetus70's Avatar
 
Joined: Aug 2011
Location: The desert!
Oddometer: 114
Simply awesome Clean and very creative. If you made a kit, I'd buy it.
Epictetus70 is offline   Reply With Quote
Old 10-07-2012, 10:44 AM   #14
SpEd
Gnarly Adventurer
 
SpEd's Avatar
 
Joined: Aug 2005
Location: Willis, just North of Houston
Oddometer: 218
Amopther alternative

I wish I had the know-how to create what Kevin did and I'm certainly not making light of the op's solution, but I think I might lose a limb if I tried to do something like he did.
__________________
R1200 GS Adventure
Triple Black
SpEd is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 11:36 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014