Aardschok
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« Reply #30 on: May 04, 2022, 09:23:44 AM »
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Can I buy a board please?
Don't worry, I'll be making these available when I've got something that works  |
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prj
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« Reply #31 on: May 05, 2022, 03:36:09 AM »
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Btw, not to ninja anything, but this has been available for a while, and it works: https://www.ecumaster.com/products/haldex-controller/It's around 300 EUR retail price and allows to use haldex without ABS at all. Of course this replaces the whole haldex controller, which can be handy as these controllers die sometimes... The downside is, you don't have any torque based control. They made an analog input for VSS, but they could have also made an analog input for pedal and done a 3d map pedal vs vss... This solution here has the potential to cost 1/10th of that and it is essentially a piggyback, so a bit different. |
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GTB2260VK
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« Reply #32 on: August 25, 2022, 06:51:52 AM »
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Don't worry, I'll be making these available when I've got something that works anything new to get this project started myself :-D |
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wachu
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« Reply #33 on: October 09, 2022, 01:12:31 PM »
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Hello, I wanted to ask if this project is still alive. I've saw on your github that you are attempting to run it on ESP32. If there is anything that i can help with, just let me know. I am not really into C++/Java but i can participate in tests with my vehicles or donate this project just to see it alive Regards! |
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Riddler92
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« Reply #34 on: October 12, 2022, 10:57:11 PM »
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Hello, I am also in the process of testing the OpenHaldex.
I have now ordered all the parts I need. But I would prefer it if I could do it without a master and only with buttons.
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hiszpan995
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« Reply #35 on: December 14, 2022, 02:31:41 AM »
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I followed the thread on GitHub, but I admit that I don't understand it very well and I don't think I'm up to it. It's enough for me to force Haldex to work with one button, and after turning it off, it returned to its natural work. Can you simplify it then?
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adam-
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« Reply #36 on: December 14, 2022, 04:23:59 AM »
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Jam 12v up the pump.
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prj
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« Reply #37 on: December 14, 2022, 06:04:20 AM »
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Jam 12v up the pump.
This is not very good for the pump though, it's not meant to be used like that and will fail much quicker than normal. |
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hiszpan995
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« Reply #38 on: December 14, 2022, 06:42:03 AM »
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Jam 12v up the pump.
and that's enough? I had the impression that the pump was running all the time to maintain pressure in the system. Regardless of the operation of the stepper motor |
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mdz
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« Reply #39 on: December 14, 2022, 12:26:33 PM »
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No, pump is not running all the time and it just supplies hydraulic pressure to the system when it is needed. Stepper motor engages clutch by moving pin/piston.
I've seen control unit being replaced by mechanical valve opening and closing hydraulic circuit normally operated by stepper motor. There was a string routed inside the car to open the valve. Not sure about how the pump was powered but all this ended up with burnt clutch as it is not meant to work all the time.
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terok
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« Reply #40 on: December 15, 2022, 11:49:24 AM »
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To be exact, electric pump only generates pre-supply pressure, which return flow is then restricted by the stepper motor controlled pin. Clutch pressure is made by the mechanical piston pump when there is speed difference between axles.
But yeah, driving the pre-pump continuosly from 12V is not wise.
Also oil needs much more cooling if used in rally/race/whatever, maybe more oil capacity would be enough. Same goes to newer generations too.
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Aardschok
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« Reply #41 on: December 16, 2022, 04:55:57 PM »
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Hi, long time no update... sorry, ESP32 woes put me off for a long time.. plus life has been getting in the way. Good news though, I ported the project to Teensy 4.x and it's working nicely Boards arrived this morning and I've been out for testing.. results are excellent I've got 5 boards to sell at cost ($20 + postage) without Teensy, PM if interested New repo: https://github.com/ABangingDonk/OpenHaldexT4Edit: all boards sold, will order another batch |
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« Last Edit: January 18, 2023, 02:36:50 PM by Aardschok »
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adam-
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« Reply #42 on: December 19, 2022, 05:34:27 AM »
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Bought a board. |
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adam-
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« Reply #43 on: December 22, 2022, 07:23:59 AM »
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Board has arrived, Teensy on it's way. Mocked up a box for it, will print it tonight.
Tempted with a separate Bluetooth module/screen that can be mounted somewhere.
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jesusxd00
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« Reply #44 on: February 22, 2023, 11:29:41 AM »
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Bought one board! And Teensy 4.0 with headers its on its way. In my case, OpenHaldex will be used in Slalom competitions. You can be updated in instagram @soriano.racing  |
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