Using L297/L298 with Sanguino

Hi,

I have burnt like 8 Polulu/Stepsticks. Those are costly and have long waiting time. So I was trying to run it with L297/L298.

The only problem is Polulu/Stepstick the DIR signal is on high, while on L297 it is on a low pulse. Is there a way to change the signal, in the Configuration.h? I'm using Splinter

Look for Generation 2 Electronics. Boards like the Stepper Driver 1.2 work just fine as a Pololu replacement. No microstepping, of course.

Also, DIR isn't a pulse, but a continuous signal. Can be inverted in about all firmwares.

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Generation 7 Electronics	Teacup Firmware	RepRap DIY

Oops, I meant the step signal not the direction

Solved that. Used a 7404 invertor IC.
Just explaining in case anyone else tries it out.
First I had issues even using 7404 as the L297/8 circuit & Sanguino weren't linked. I was using a separate power source for Sanguino and another for the L297/8. Hence, so there was no absolute ground for the 7404, and hence it wasn't always high. When I used the same source, it worked like a charm.

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Used a 7404 invertor IC.

Impressive how quite some people prefer to add costly hardware instead of changing a line of software code or two. Glad you got it working.

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Generation 7 Electronics	Teacup Firmware	RepRap DIY

I couldn't find any setting in configuration.h file. So I went through the software. There are lot of places where they write output to the step pins. If I miss out couple of places or add new bugs, it would be a nightmare to find out what is wrong, when in the first hand I don't know fore sure that the my L297/8 circuit works properly. (I had built my own circuit, didnt buy a pre-tested board)

7404 is dirt cheap and I already had 1 lying unused. So it was a better solution, for now.

If anyone can point me to a setting in configuration.h file that would be the best solution.

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I couldn't find any setting in configuration.h file.

Use a decent firmware, then. Teacup uses macros (in pinio.h) for such things for cases exactly like yours.

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Generation 7 Electronics	Teacup Firmware	RepRap DIY

hey Traumflug !!

nice work man

can you share the firmware of reprap while using stepper driver 1.2

thanks