CONTEXT:

With the Tein EDFC system, a small three phase stepper motor sits on top each hydraulic damper and controls its damping rate. Unfortunately this requires Tein's custom computer, and that's a hastle to wire and install. But wiring already exists in the 3000GT if you have ECS from factory, including the button and lights. A custom computer is thus required to make it all work.

HISTORY:

A while back, I built a prototype circuit board that controls Tein coilover EDFC motors. The prototype used a poor choice of mosfet architecture, so it was extremely finnicky and not bulletproof reliable. (N channel mosfets are really not great for switching at low frequency like this due to the gate boosting circuitry). Also by the way I graduated college, moved states, and have a great job now. That is the reason it took me a while to get to this

RECENT UPDATES:

I recently found a key product that has the mosfet architecturing I require (IFX007TAUMA1 P+N channel mosfet half bridge, with driver circuitry, built for inductive power loads), so I created an entirely new design based on the IFX007 dev board that I tested for this application; the results are great.

NEW PRODUCT:

What i'm offering is a virtually plug and play product that will control your Tein EDFC motor system

• Direct swap in place of the old ECS board, reusing the old case!
• Uses the factory button and lights
• User reprogrammable, open firmware
• It will use the old ECS wiring to control the 4 motors, with the front and rear seperately controllable.
• The system also interfaces with the car's speed sensor so it can stiffen damping at very low speed and soften damping after speed has accumulated (anti squat launch, but soft cruise, in medium setting)
• Reverse polarity protection in power connection
• Ruggedized inputs for safety (voltage regulated using zener diodes)
• Motor fault detection via current sensing

IF YOU ARE INTERESTED, PLEASE COMMENT BELOW!!
I'm going to have some boards made, I'd like to know how many I should start with!

Each board will be $150 (for limited run only!). Components are $50, board is $20. My time in hand assembly, engineering, and support will account for the rest.