Control OEM radio from my head unit

**boy36** · 03-27-2009, 08:40 AM

Hi

I have same questions about Fusion brain.

I want to control my oem radio with carpc.(ON,OFF,CD,......)
This is oem radio plate.

I want to control this push buttons with fusion brain.
I m solder wire for each button.

For do that if i must buy fusion brain and relay for each button?

Sorry for my english.

**greenman100** · 03-27-2009, 10:41 PM

Originally Posted by boy36

For do that if i must buy fusion brain and relay for each button?

Sorry for my english.

To do that, you need 1 fusion brain (can handle 16 relays) and then 1 relay for each button

**Iamthehor** · 04-06-2009, 01:50 PM

May not need relays - they're probably all 12V low current. Hard to determine that for sure though.

**0l33l** · 04-25-2009, 04:17 PM

I'm using optoisolators for controlling the push buttons for my HVAC unit. This is essentially the same problem as you're having. I just hooked up a 1kOhm resistor to pin 1 of my optoisolator (LAA110 - http://www.clare.com/home/pdfs.nsf/www/LAA110_R09.pdf/$file/LAA110_R09.pdf). It seems to work really well, when the digital output on the fusion brain goes high, the optoisolator (or a solid state relay) connects the terminals, emulating a push button