Want to convert 12 volt brake light signal into switch output for ipod remote

[tucocaps]

I've been doing some research on this for awhile, and since I intend to use this on a motorcycle, I want to keep as simple as possible.

I plan on using an "ijet" wireless remote for this. The remote is a simple pushbutton remote control. I'm assuming I will be able to solder to the play/pause button on the inside.

What I am wondering is what would be the easiest way to translate the 12 volt brake light circuit into a switched connection on the remote's play/pause button? The net effect I'm trying to achieve is that the play/pause button will be engaged when the brake light is on, and then be engaged again when the brake light is switched off. I'd like to know if I'll need a complex arduino-based setup for something like this, or if it can be done with simpler circuit design.

Thanks much for any ideas!

[stj]

Re: Want to convert 12 volt brake light signal into switch output for ipod remote

tiny 12v relay.
or an opto-isolator and a 1k resistor.

[budm]

Re: Want to convert 12 volt brake light signal into switch output for ipod remote

The play /pause button on the iJet remote is a momentary switch button (you push the button then it make contact and when you release the button the the contact then goes open), right? Pictures of this remote?
What happen if you hold the button in, will it stay in pause and when you release will it go into play or you have to toggle the sw again to make it goes into play?

[tucocaps]

Re: Want to convert 12 volt brake light signal into switch output for ipod remote

wow, thanks for the quick reply there bud.

Yes, I'm sure it will be a momentary. I have several ipod remotes, and that's how they work. I haven't yet purchased the ijet I intend to use, but here is a picture from ebay:

http://www.ebay.com/itm/iJet-Nav-Sta...item35edf41991

I don't know enough about opto isolators to understand how i could rig it to hit the switch when the brake light turns on, and again when it turns off.

[budm]

Re: Want to convert 12 volt brake light signal into switch output for ipod remote

Just do the holding down button to see how it reacts, to me that button has to be toggled twice, once to make it goes into PAUSE, then another push again to make it goes into PLAY.
Using simple signal form brake switch to turn the Opto on will only produce one toggling signal.