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Re: Changing VSP sound

Posted: Mon Mar 31, 2014 10:17 am
by robot256
This project is fairly far down my to-do list, but I'm planning to incorporate it into my build of the CANary project. Reprogramming the chip on the stock board can be ruled out, since if we could even get a blank part it would be impossible to reverse-engineer if the code protection bits are set, might interfere with other functions of the module, and anyway would not provide a user-configurable solution.

I opened up the VSP box and found the pinout marked clearly on the PCB. There are actually two speakers, back and front, both 4-ohm types, coming directly back to the VSP box. My preferred plan is to insert a new circuit inline with the cable going to the VSP box and use a relay to switch the speaker to a new audio amplifier. Generated sound will come from the mbed microprocessor in the CANary module. Then we have full control over the software, can play WAV and MP3 files off an SD card, select the sound on the fly, and even link it to CAN bus events like gear shifts and vehicle speed.

If anyone with the skills to do this gets to it before me, I'd love to see how it goes and help out. It'll be July at the earliest before I get to it. Still need to assembly my JuiceBox, fix my OpenEVSE, and, oh yeah, finish graduate school.

Re: Changing VSP sound

Posted: Mon Jun 23, 2014 7:44 am
by slinkyuk
robot256 wrote:This project is fairly far down my to-do list, but I'm planning to incorporate it into my build of the CANary project. Reprogramming the chip on the stock board can be ruled out, since if we could even get a blank part it would be impossible to reverse-engineer if the code protection bits are set, might interfere with other functions of the module, and anyway would not provide a user-configurable solution.

I opened up the VSP box and found the pinout marked clearly on the PCB. There are actually two speakers, back and front, both 4-ohm types, coming directly back to the VSP box. My preferred plan is to insert a new circuit inline with the cable going to the VSP box and use a relay to switch the speaker to a new audio amplifier. Generated sound will come from the mbed microprocessor in the CANary module. Then we have full control over the software, can play WAV and MP3 files off an SD card, select the sound on the fly, and even link it to CAN bus events like gear shifts and vehicle speed.

If anyone with the skills to do this gets to it before me, I'd love to see how it goes and help out. It'll be July at the earliest before I get to it. Still need to assembly my JuiceBox, fix my OpenEVSE, and, oh yeah, finish graduate school.


This would be awesome. If you need any sponsorship or create a kickstart page i'd be happy to donate!

Re: Changing VSP sound

Posted: Tue Jul 01, 2014 1:07 pm
by Limey
slinkyuk wrote:This would be awesome. If you need any sponsorship or create a kickstart page i'd be happy to donate!



I'd be donating as well! I want mine to sound like the Tardis!

Re: Changing VSP sound

Posted: Wed Jul 02, 2014 10:45 pm
by pthack
Limey wrote:
slinkyuk wrote:This would be awesome. If you need any sponsorship or create a kickstart page i'd be happy to donate!



I'd be donating as well! I want mine to sound like the Tardis!



Nah, the Jetson's car....

Re: Changing VSP sound

Posted: Thu Jul 03, 2014 12:27 pm
by GeekEV
pthack wrote:
Limey wrote:I want mine to sound like the Tardis!

Nah, the Jetson's car....

K.I.T.T. (aka Knight Rider)...

Re: Changing VSP sound

Posted: Fri Jul 11, 2014 6:14 am
by Limey
GeekEV wrote:
pthack wrote:
Limey wrote:I want mine to sound like the Tardis!

Nah, the Jetson's car....

K.I.T.T. (aka Knight Rider)...



That's another good one.

I think making it sound like a Harley Davidson would be fun too. heck, I would end up changing the sound as often as ringtones!

Re: Changing VSP sound

Posted: Fri Jul 11, 2014 7:27 am
by lion
It's tempting to get one of those CAN shields, and just come up with an Arduino solution. But I've never dealt with decoding CAN data before, so not sure how much is involved here.

Re: Changing VSP sound

Posted: Fri Jul 11, 2014 12:40 pm
by GeekEV
In theory, it should be as "simple" as building a little audio playback circuit that watches the audio out lines from the original module and as long as it senses a signal on the line switch the output to the speakers to be it's own. But that's beyond my electronics abilities...

Re: Changing VSP sound

Posted: Tue Aug 08, 2017 12:28 pm
by BigShow
GeekEV wrote:
pthack wrote:
Limey wrote:I want mine to sound like the Tardis!

Nah, the Jetson's car....

K.I.T.T. (aka Knight Rider)...


Bump - can I make my Leaf sound like K.I.T.T yet?

Re: Changing VSP sound

Posted: Wed Mar 21, 2018 1:04 pm
by klutzo
BigShow wrote:
GeekEV wrote:
pthack wrote:Nah, the Jetson's car....

K.I.T.T. (aka Knight Rider)...


Bump - can I make my Leaf sound like K.I.T.T yet?


I third that too! Thank you Michael Knight!