Feature request: Generic stepper output
Moderators: jsmcortina, muythaibxr
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- MS/Extra Newbie
- Posts: 19
- Joined: Sun May 26, 2013 6:19 pm
- Location: Vladivostok, Russia
Feature request: Generic stepper output
Hi, i'm lookin for the way to controll Generic stepper motors.
For example:
1. oil metering pump on rotary mazdas. 6-wire stepper motor with position sensor (same type as TPS)
2. toyota electronic throttle valve ETCS-i. 4-wire stepper motor with two position sensors - one for actual throttle valve position, one for pedal position.
It would be great if newer MS3 firmwares will have feature similar to Generic PWM output, for controlling steppers using table with target position depending on engine speed / load or other conditions (sutch as coolant temperature, etc)
for second example - ETCS-i in newer toyotas have not independed idle valve, so stepper must not just follow the pedal position, but also control idle speed.
IMHO controlling electronic throttles is actual, because more & more newer cars have this feature.
P.S. I can help with beta-tests
For example:
1. oil metering pump on rotary mazdas. 6-wire stepper motor with position sensor (same type as TPS)
2. toyota electronic throttle valve ETCS-i. 4-wire stepper motor with two position sensors - one for actual throttle valve position, one for pedal position.
It would be great if newer MS3 firmwares will have feature similar to Generic PWM output, for controlling steppers using table with target position depending on engine speed / load or other conditions (sutch as coolant temperature, etc)
for second example - ETCS-i in newer toyotas have not independed idle valve, so stepper must not just follow the pedal position, but also control idle speed.
IMHO controlling electronic throttles is actual, because more & more newer cars have this feature.
P.S. I can help with beta-tests
MS3PNP (diy) powered mazda RX-7 FD 13B-REW. bw S366. 410hp pump gas
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- Master MS/Extra'er
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Re: Feature request: Generic stepper output
This is what AEM dos,
It has a few checks like under and over voltage, where the outputs disable.
AEM dos not offer things like cruse control and torque limiting by reducing throttle opening.
It is these programs that quickly bring in the ability for cars to run away.
It has a few checks like under and over voltage, where the outputs disable.
AEM dos not offer things like cruse control and torque limiting by reducing throttle opening.
It is these programs that quickly bring in the ability for cars to run away.
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- Super MS/Extra'er
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Re: Feature request: Generic stepper output
They're planning to add dedicated OMP stepper control code to 1.3 code.
Drive by wire would be more of a purpose written function and there are a couple other threads covering it.
Drive by wire would be more of a purpose written function and there are a couple other threads covering it.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
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- Master MS/Extra'er
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Re: Feature request: Generic stepper output
Any news on this ??Matt Cramer wrote:They're planning to add dedicated OMP stepper control code to 1.3 code.
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- Site Admin
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Feature request: Generic stepper output
I have not done it yet. It is still on the list.
Megasquirt is not for use on pollution controlled vehicles. Any advice I give is for off road use only.
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- MS/Extra Newbie
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Re: Feature request: Generic stepper output
I've done it myself. Work perfect on my '92 FD. It will be great if my part of code will included in next MS3 firmware release.juansh2385 wrote:Any news on this ??Matt Cramer wrote:They're planning to add dedicated OMP stepper control code to 1.3 code.
MS3PNP (diy) powered mazda RX-7 FD 13B-REW. bw S366. 410hp pump gas
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Re: Feature request: Generic stepper output
It won't make 1.3. A version that interacts with my generic closed loop code will be integrated probably for 1.4.
Megasquirt is not for use on pollution controlled vehicles. Any advice I give is for off road use only.
Re: Feature request: Generic stepper output
Did omp control by anychance make it into 1.4? if so I'll be pick up another MS3 to test this out.
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- Site Admin
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Re: Feature request: Generic stepper output
not yet, but it will.
Megasquirt is not for use on pollution controlled vehicles. Any advice I give is for off road use only.
Re: Feature request: Generic stepper output
Ken - I just measured an FD OMP and an RX-8 OMP. The FD OMP has 44 ohms per coil, and the RX-8 has 66 ohms per coil. The datasheet for the UDN2916 states 750mA continuous output current - isn't that well above the current that these pumps will draw? Meaning, they can work with the MS3's stepper circuit as-is.
The man behind MS Labs
2005 Audi A3 2.0L TFSI DSG AWD - Extreme MS3
2002 Mazda Miata 1.8 6sp - Enhanced MS3 1.4.0, sequential injection, sequential ignition, big turbo, lots of boost
2005 Audi A3 2.0L TFSI DSG AWD - Extreme MS3
2002 Mazda Miata 1.8 6sp - Enhanced MS3 1.4.0, sequential injection, sequential ignition, big turbo, lots of boost