Need Wiring Help For 12 Volt Motor

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snub:
These joysticks seem to be causing some confusion ( my fault ). They are 4 way joysticks with 4 separate SPST switches. They go left, right, up and down with center off. I am only using the left and right. All are normally open contacts. Too make it simpler when I was trying to come up with my own wiring diagram I left out the joysticks and drew 4 separate SPST switches. Unfortunately my scanner isn't working because I'd like to post it. I am trying now to fix it.

For now I will leave you with this:
One SPST switch for left (with PWM)
One SPST switch for right (with PWM)
One SPST switch for left (full power)
One SPST switch for right (full power)

Thanks guys!

vtsteam:
Oh, 4 way center off SPST joysticks! :doh:

Okay, well we can use the center off feature to eliminate the ON/Off switch I showed in my schematic.

The direction relay will stay.

The speed relay can be eliminated, IF both joysticks are non-centering. Can you change the joystick that centers to a non-centering joystick, mechanically? That's often possible -- part of the design.

If not, the circuit I showed will function fine since it was designed for only one SPST joysticks. And at the least, you have that.

vtsteam:
After noodling around, my head hurts now, and I'm taking a break from this -- I want to work on my shop!

But if interested the circuit I showed will work fine as-is. The joysticks will act like two position sticks, even though you have 3 positions -- two positions will be the same and the third will be the other choice. The ON/Off switch will what it was meant to do.

Maybe later tonight I'll think about it again, but for now there's one working circuit out there, at least.

John Rudd:

--- Quote from: vtsteam on December 12, 2014, 03:43:16 PM ---After noodling around, my head hurts now, and I'm taking a break from this -- .

--- End quote ---

Yeah....can't say I blame you....
I'd say there's an easier way to do this....but I don't want to confuse the OP any more....
Suffice to say, In my experience,pwm drivers have an open Source out...simplest way for max speed would be to just short the mosfet...but that needs a high current relay contact.....but then you could just pull the Gate high........hmmmm....

Watch for smoke.... :lol: :lol:

vtsteam:
Well got a little done on the shop, and now it's dark.

A big enough diode to handle the amps would even do it:

The speed joystick SPST switches wipers would be hooked together (making them a SPDT). That side would be connected to power +.

One switch's output goes to the speed relay coil. And also, through the diode, to everything else needing power.

The other switch terminal output goes to everything BUT the speed relay. Diode prevents back feeding and energizing the speed relay.

Position 1 -- energize speed relay and rest of circuit
Mid position -- no power to anything.
Position 2 -- speed relay not energized, power present to rest of cicuit

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