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Can i use a barrier strip for control panel grounds instead....

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CJK:


--- Quote from: quarterback on June 07, 2005, 11:19:40 am ---In the TOK encoder thread somebody mentioned P360s not working unless there was a common ground (or something like that).  Did I misunderstand taht post or is that true and why is that?

--- End quote ---

The P360's have a power connection, a ground connection and four connections for the principal directions (up, down, left, right). The ground has to be common to the +5 V power source and the keyboard encoder or nothing will work. (You won't have completed one of the circuits if the buttons go to a different ground from the power source.)

-- Chris

quarterback:


--- Quote from: CJK on June 07, 2005, 11:47:25 am ---The ground has to be common to the +5 V power source and the keyboard encoder
--- End quote ---

Gotcha.  I had interpreted the comment in the other thread to mean that ALL the buttons & joysticks had to share a common ground or the P360s wouldn't work, and I couldn't figure out why that would be the case.
Thanks

markrvp:

The barrier strip should ground to the encoder's ground.

You can actually use a combination of a barrier strip and daisy-chaining.  For example, run a ground from the encoder to the barrier strip.  You can daisy-chain all the buttons for player 1 and go to the barrier strip.  Then daisy chain all of player 2's controls and run that lead to the barrier strip. 

You have a lot of options.

Tiger-Heli:


--- Quote from: quarterback on June 07, 2005, 12:05:47 pm ---
--- Quote from: CJK on June 07, 2005, 11:47:25 am ---The ground has to be common to the +5 V power source and the keyboard encoder
--- End quote ---

Gotcha.  I had interpreted the comment in the other thread to mean that ALL the buttons & joysticks had to share a common ground or the P360s wouldn't work, and I couldn't figure out why that would be the case.
Thanks

--- End quote ---
I had the comment in the other thread.  The inputs that you wire the P360s to have to have a common ground.  With an I-PAC or KeyWiz, it doesn't matter, as all of the inputs are common ground.

With a matrix-mode device, such as a gamepad or keyboard hack, I thought you were okay as long as all of the P360 inputs are in the same row or column, but now I am not sure of this.

Tiger-Heli:


--- Quote from: quarterback on June 07, 2005, 12:05:47 pm ---
--- Quote from: CJK on June 07, 2005, 11:47:25 am ---The ground has to be common to the +5 V power source and the keyboard encoder
--- End quote ---

Gotcha.  I had interpreted the comment in the other thread to mean that ALL the buttons & joysticks had to share a common ground or the P360s wouldn't work, and I couldn't figure out why that would be the case.
Thanks

--- End quote ---
Actually, there is a lot of confusion on this issue.  I recently got re-edumacated on this an hope I got it right.  What happens is in direct-mode the encoder supplies +5V per input, through the switch to ground.  As long as the encoder works this way, for at least 4 inputs, you can hook a P360 joystick to it.  If it uses Matrix mode, than this won't work.  Note that it might use a 23x1 matrix where all the COM terminals of the buttons go to the same column and you can daisy-chain wires, but you still can't hook up Perfect 360 joysticks to it.

The confusion in the TOKN16 thread came about b/c KevSteele originally said the encoder was direct mode, but used individual ground wires instead of daisy-chaining them, then MattP said it used two grounds in a multiplex, then MattP later said it used a Matrix.

I am now assuming you cannot use P360's with the TOKN16, but don't know for sure, maybe in a couple of days  8)

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