Triaxis switching voltages

[Inkomodo.Dragon]

Hi guys, I'm trying to build a device to use the 4 switches that the TA offers to command relays. I've seen the 2:90 schematic and it seems that they should give a voltage difference of 1.3v when on.
The problem is that my unit is giving me 0.16v at best, since I don't know if it is a problem with my TA I would like to know if yours do that too.

If any one could take a readig of your own whould be very useful.

Thanks a lot

 

[elvis]

As I understand it, the Triaxis switch controllers are just switches. They do not output a voltage, but only give a shorted or open path to GND (shield). You should be able to put them in series with a relay coil that is energized at the other end in order to control the relay. However, I do not know how much voltage the switches can stand when open before they are damaged. I would guess 5V for sure, probably 12V, maybe more.

 

[Inkomodo.Dragon]

First of all, thaks for the reply.

I've been making some experiments and I got it to work. I don't think that you should put the switches in series with the relay coils, at least I wouldn't do it.

The solution was rather basic, I've copied the 2:90 switching using two 2n3904 and a couple of resistors. I'm using 12v relays so the values of the resistors changed a bit since I didn't want to apply more voltage to the TA switches than the specified on the schematic.

It works like a charm and since the TA mode changes are controled with LDRs, any relay switching noise is "lost" on those milliseconds it takes to switch.

I think I will implement the idea during this month, if it works well I'll let you all know.

Cheers from Argentina (The other land from down under )