[Baeyens]

Hey everyone,

is there anyone who has experience with the so-called TB6600 stepper driver with a S109AFTG chip?
If so, did you change anything to the design?
What software did you use to test it?

Would you mind sharing?

I'm trying to get this to work, and sure it runs.
But i can not get this to work as it should.
I mean by this, by using the micro-stepping.

On an arduino uno, i need to implement a delay of 50 microseconds between HIGH/LOW signals for stepping.
This with a setting of 6400 pulses per revolution.

See pictures for verification.

[jfong]

I was giving two to test. Exact same ‘109 board. Build quality was low and board wasn’t properly attached to the heatsink. Tested a nema17 at 1amp and a larger nema23 at full current. Tested voltage at 12 and 24 volts.

1hour Test run at 500rpm. Driver set at 3.5amps at 24volts. Heatsink temperature reached 65c
Ambient temp was 24c. No external cooling was used.

Used a Arduino Uno running grbl as step pulse engine. Ran my 1hour long gcode test program and both motors returned to start position with no missing steps.

I haven’t had a chance to scope out the microstep waveforms with the current probe to check accuracy.

I have not tested the maximum 40volt smoke test.

Long term testing on a machine will need to be done to see if it survives.

[Baeyens]

Hey Jfong,

thanks for the reply. Like the info you gave me.
Will investigate.
Found a few websites that gave me what i needed.
At first didn't get the information. It took me some time.
But then again, i wasn't really "here" either.

I have tested it with this piece of code you find in the attachment.

So, we'll have to "teardown" the board to modify this.

[jfong]

I just tested the driver with Arduino/grbl set to 5 microsecond step pulse width, $0=5 configuration setting. No issues with the driver set at 32microsteps. No lost steps seen using a bigger superior electric nema34. Driver set at max 3.5amps.

I also tested the driver at 40volts. Was able to spin the nema34 to over 7000rpm. Kinda surprised about that. Heatsink did get pretty warm. I probably wouldn’t want to run the driver more than [email protected] to keep within thermal limits. But it did survive the smoke test at [email protected] while spinning a motor pretty darn quick.

https://imgur.com/a/E797oWX

[jfong]

Captured the 109 Drive current waveform. Better than a a4988 and similar to a TB6600

https://uploads.tapatalk-cdn.com/201...3a99a7ed74.jpg

https://uploads.tapatalk-cdn.com/201...51034ffb20.jpg

https://uploads.tapatalk-cdn.com/201...5b23a2c0e6.jpg