developing an ECU for 24 hours of Lemons

[Scania]

could I buy 1?

I hope to get these boards in a week and validate the design by the end of the month, once I do that there will be a way to purchase a bare PCB.

If you want you can grab the gerber files and order yourself your own batch All the sources are open at http://rusefi.com/forum/viewtopic.php?f=4&t=569

what software u run?

[rusefi]

what software u run?

the boards are done in http://www.kicad-pcb.org/ if that's what you are asking for

[Scania]

what software u run?

the boards are done in http://www.kicad-pcb.org/ if that's what you are asking for

have a map to tune or need to program from Source code to tune the engine?

[rusefi]

have a map to tune or need to program from Source code to tune the engine?

Tuner Studio

There is some info on the website & on the forum, hopefully we will document it better one day.

http://rusefi.com/wiki/index.php?title= ... :Simulator

[rusefi]

First run on the new board & new car - the tune is BAD, it's just a board run:

[rusefi]

I am now stimulating a couple of stock ECUs so that I can figure out the ball park of a default timing/fuel maps and make kind of PnP blocks for early Miatas:

[PlatinumZealot]

What do you think of Megasquirt, Russ?

I like where you are going with the open source thing, and using off the shelf, widely available components. In these days of cheap cutting edge technology such as touch screen smart phones, this is the right path to take.

[rusefi]

What do you think of Megasquirt, Russ?

I think that Megasquirt is a great product, but on this picture I see Megasquirt on the left:

[rusefi]

Finally I have a reliable test mule! Now I need to learn something about cold start strategy - so far this still requires pre-warning with stock ECU and that's a shame.

[youtube]http://www.youtube.com/watch?v=PhIWAPaUnYM[/youtube]

[Scania]

could I buy 1?

I hope to get these boards in a week and validate the design by the end of the month, once I do that there will be a way to purchase a bare PCB.

If you want you can grab the gerber files and order yourself your own batch All the sources are open at http://rusefi.com/forum/viewtopic.php?f=4&t=569

the link was not work, did u have another page of it?

[rusefi]

Seems to work for me, maybe try again?

[Scania]

work now

[TurboLag]

What do you think of Megasquirt, Russ?

I think that Megasquirt is a great product, but on this picture I see Megasquirt on the left:

http://upload.wikimedia.org/wikipedia/c ... iPhone.jpg

I really think you should take a better look at the newer incarnations of the Megasquirt. The MS3X (been out for more than a year by now) is quite a powerful and versatile ecu with a good resolution map and lots of programmeable I/Os.. Accuracy is great aswell! But hey, if you can do even better for value I'm interrested

[SlowSteve]

Hi,

Which specific STM board are you using please? I.e. what rev?

How are you finding the latency and also clock drift? I am struggling in personal projects to control large numbers of LED's over I2C (W22812's) with an STM32 over a period of 30 minutes or so, so not sure what I what I would expect from a an ECU?

Have you carried out long runs with the board? And if so, how did you find them?

Thanks

Steve

[rusefi]

We've started with stm32f4discovery and we are now moving towards using the same stm32f407 chip right on our board.

I've build my scheduler on top of a 1MHz hardware timer and CYCCNT hw counter register - there is some data on my software-based PWM @ http://rusefi.com/forum/viewtopic.php?f=5&t=2&start=10

I am constantly attempting 24 hours runs which succeeded unless I have bugs - the hw & ChibiOS perfect perfectly from my standpoint.