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Old 06-14-2005, 12:47 PM   #1
fragment
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Member#: 8050
Join Date: Jul 2001
Chapter/Region: W. Canada
Location: Bugeye EJ207 - T3T04S
Vehicle:
2007 Wagon VF36

Default Hydra PWM; DCCD tie in?

So, elsewhere I published a thread where I made my own rudimentary DCCD controller. When time allows, I mean to increase its usefulness with things like throttle, brake, and handbrake tie ins.

As a recent Hydra owner (not yet installed) I'm curious about the PWM outputs. Specifically, the 3D maps. Anyone know what the PWM outputs actually look like? Frequency, amplitude, duty cycle, polarity etc? I'm just wondering if I could use a 3D map with say throttle % and road speed to output a variable waveform that could be used to control a JFET driver to run the DCCD coil?

I would still need basic diode protected signals from the handbrake and brake pedal to turn off the signal, but it would be nice to have some logic control for a variable "lock" control.

Am I dreaming, or could this work?
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Old 06-14-2005, 06:04 PM   #2
engineerx
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Location: Bullet-Dodging Fwy Los Angeles
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0405 WRX STi/S2000
AspenWhite/Silverstone

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It should be possible
The Hydra can output Pulse Width Modulated square-wave signals.... then all you need is a controller to receive and send a signal to the DCCD switch - just some type of "multiple position" switch depending on the PWM output - If you have some EE or electronics background- that should be piece of cake !
If you get it to work - make sure you post your schematics / circuit diagrams !!

Phil is working on an Aquamist Water Injection controller - so YES the Hydra is capable of sending signals to almost any type of controller

Call Phil @ Element Tuning or Andrew @ HydraEMS USA to get definite answers - or just use your Oscilloscope to see the outputs

http://www.hydraems.com/america/
Auxiliary outputs:

PWM 1 - 4, 9 - 14 and 16 are general purpose switch to ground 1A current limited outputs. PWM 1 - 4 have optional free-wheeling diodes for linear control of variable solenoids. PWM 5,6 and 8 are general purpose switch to power 1A current limited outputs. All PWM channels have 33V flyback limiting. PWM 1 is not available for DBW Cars. PWM 7 and PWM 15 are currently not available.
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Old 06-14-2005, 07:27 PM   #3
fragment
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Location: Bugeye EJ207 - T3T04S
Vehicle:
2007 Wagon VF36

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Well, I do have an electronics background, but its been underused for years and I have discovered serious corrosion

I don't know if I could bias a transistor if you put a gun to my head...

That said, I'm not afraid of getting my hands dirty with flux
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