Following Modifry's instructions here (http://www.baustnet.com/honda/mods/garage/garage.htm) I am hooking up a 3 button 3v remote garage door opener to the S2000's cruise control switches.

The top cruise button will activate my garage door.

The bottom cruise button will activate the other garage door.

I've got everything built and wired according to the schematics.



So, I have 3 of the above circuits built and installed.

Circuit 1 powers the entire door opener board to power the code hopping chip.
Circuit 2 is attached to the negative output of switch 1 on the circuit board. When this circuit is powered, my garage door opens.
Circuit 3 is attached to the negative output of switch 2 on the circuit board. When this circuit is powered, the other garage door opens.

It's all connected but not installed in the car yet. Currently I am using a 12v battery from a cordless drill for a power supply (it puts out about 13.5v according to my multimeter).

Now here's what's happening. When the drill battery is connected to the circuit, there is a nice 3.15v voltage drop across garage door opener circuit. Then when I manually press the buttons to activate the garage door, nothing happens.

I then remove the 12v battery, and stick in the original 3v lithium ion battery. I press the positive side of the LI battery to the Vout of the circuit 1 voltage regulator (so that the connecting wire sees +3v) and then attach the circuit ground to the negative of the LI battery. Then I hit the buttons, and presto, the garage doors work perfectly. I have measured the voltage across the LI battery and it has varied anywhere from 2.99v to 3.35v.

I don't understand why the circuit works with the LI battery and not with the 12V, eventhough the circuit board is seeing 3.15v.

Any advice? I am stumped.

 

Do you have detailed schematics for all 3 circuits?

I can help but at work atm...

EDIT: If the cct requires aprox 3VDC why are you trying it with 12VDC? Or does it require 12VDC since it's going in the car?

 

i guess you're keeping your car

 

Huh, I'm not selling my car Simon. Where'd you get that idea?

Earliest would be 2 years from now I think. It's the 3 year makeover that's occuring right now. Wheels, tires, suspension, stereo, other goodies too!

 

Post the cct diagrams!!

 

Hi Jason,

The 3 circuits are exact copies of each other, which are represented up above by Modifry's schematic. Basically, all they do is ensure a voltage drop from 12v to 3v regardless of load across the circuit.

Circuit one is switched or unswitched (haven't decided yet) 12v in powering the main circuit board with 3v after the step down.

Circuit two is +12v in from the top cruise button stepped down to 3v and attached to the negative terminal of switch 1 on the circuit board. This will activate my garage door when the top cruise button is pressed.

Circuit three is +12v in from the bottom cruise button stepped down to 3v and attached to the negative terminal of switch 2 on the circuit board. This will activate the second garage door when the bottom cruise button is pressed.

All 3 circuits have a common ground.

I need to drop the voltage from 12v to 3v because the remote is going to be wired to the car and will be receiving +12v to a 3v board -> not good. So I need to step down the voltage for the board.

Does this help at all? Still don't understand why this doesn't work.

 

I can whip something up for you in Visio and email it to you if you need it.

 

Sent u a PM....

Most of those voltage regulators have OVP... (over voltage protection) If you input too much voltage it will block it to prevent cct overload.

So if you input 13VDC without it working but it works on 3VDC.. that tells me the regulator is not dropping the voltage properley for circuit operation. It's probalby wired wrong if that's the case.

 

Did you measure the voltage at the Vout point of the regulator with the 12V battery on it? It should be reading about 3.5V.

 

Why are you using your cruise for this? Does this disable your cruise? Just wondering as I thought I read that putting it on your brights switch was best.