T500 RS Handbreak Wiring

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2Happy

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Hey, I got the T500rs and I wanna build myself a Flyoff Handbrake. The building path is fine for me, but I wonder how I need to wire the Handbreak. Do you guys have any Tips or guidelines for me? I don't wanna ruin my T500 Rs when I wire the Handbreak and open the Wheel.
Greets
 
Dam, if you were using it on PC I was going to suggest using one of the buttons on the front of the wheel base as that would seem the easiest way to do it.

I don't have my T500RS on hand anymore to try figure out were else to try, sorry I couldn't be more help
 
So I can't just solder it to the R3 or L3 Button? As I read trough some threads, that seemed to work :/
Why doesn't that work? Won't my PS4 recognize this Signal?
 
2Happy
So I can't just solder it to the R3 or L3 Button? As I read trough some threads, that seemed to work :/
Why doesn't that work? Won't my PS4 recognize this Signal?
Click to expand...

I've never even seen a T500RS, much less poked around inside one, but electrically there's effectively no difference between the normal buttons and a SPST normally open switch that you could solder on. Sure, the resistances will most likely be different but the IC the buttons are wired to are voltage driven anyway so that won't matter.

As for where to solder the switch on, open the wheel up and follow the traces from the button you want to use to a point you can solder to easily - a multimeter with a continuity beep function is a good tool for that. Solder it on with multi-core 24AWG wire, give it some slack, hot glue it near the solder points, find or make a hole in the case to run it through, hot glue it again at that hole to prevent accidentally yanking it out of the case then solder the other ends to your switch - make sure it's either SPST (single pole double throw) push to make (aka normally open) or SPDT (single pole double throw) where you only wire the common and NO (normally open) contact, leaving NC (normally closed) unsoldered, depending on what kind of switch you can find in the shape you need - microswitches will probably be your best bet but they're typically SPDT.

If I get time later I can make some drawings that demonstrate the differences between switches and how to wire them if you need that.
 
neema_t
I've never even seen a T500RS, much less poked around inside one, but electrically there's effectively no difference between the normal buttons and a SPST normally open switch that you could solder on. Sure, the resistances will most likely be different but the IC the buttons are wired to are voltage driven anyway so that won't matter.

As for where to solder the switch on, open the wheel up and follow the traces from the button you want to use to a point you can solder to easily - a multimeter with a continuity beep function is a good tool for that. Solder it on with multi-core 24AWG wire, give it some slack, hot glue it near the solder points, find or make a hole in the case to run it through, hot glue it again at that hole to prevent accidentally yanking it out of the case then solder the other ends to your switch - make sure it's either SPST (single pole double throw) push to make (aka normally open) or SPDT (single pole double throw) where you only wire the common and NO (normally open) contact, leaving NC (normally closed) unsoldered, depending on what kind of switch you can find in the shape you need - microswitches will probably be your best bet but they're typically SPDT.

If I get time later I can make some drawings that demonstrate the differences between switches and how to wire them if you need that.
Click to expand...

Thanks for your fast reply! That helped me alot. Yeah that would Be great!
 
2Happy
So I can't just solder it to the R3 or L3 Button? As I read trough some threads, that seemed to work :/
Why doesn't that work? Won't my PS4 recognize this Signal?
Click to expand...

That's what I was going to suggest, but normally console games don't allow you to custom map the buttons so you could set whichever one you choose ( could be wrong, I haven't played PS in a long time)

As long as you wire to one of the button in the wheel whatever button you have chosen will activate when you pull your handbrake.

Trying to wire something to a button on the wheel rim will be much more difficult
 
Ok so this is how the buttons in the G27's shifter are wired:


NOKMmO9.png


The T500RS may (or may not) use different ICs but I'd put a considerable amount of money on the buttons having pull resistors which either looks like the above or like this:

yQFS1pe.png

I've just noticed I have these the wrong way around but they're fundamentally the same thing and I'm posting from my phone and manually entering imgur links so I can't be bothered to fix it! Anyway, regardless of which of the above the T500RS uses (ignore the position of the resistor because it could be either way), this is effectively what you're trying to achieve:

lmirk54.png

With an SPST (2 pin, push to make/normally open) switch, or:

3TWnT8f.png

If you're using a SPDT switch (3 pins) like a typical microswitch. Note how the latter is wired; the default not pushed state means the circuit is open, then when the switch is pressed the circuit will close. Most microswitches I've seen have "NC" (normally closed) and "NO" (normally open) labels on the outer two pins and then either no label, "C" or "COM" on the middle (common). In the diagram above, 1 is NC, 2 is common and 3 is NO.

If your handbrake design requires a switch that closes the circuit on release rather than on press (circuit close on press is what I've drawn above), you can either use a normally closed/push to break SPST switch or wire a SPDT switch so NC and NO are reversed.
 

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