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Forum: 50. Toolheads

Wed 06 May 2015, 22:39

Replies: 30

Tuning my Spindle

Views: 45,855

Posted By bradm

Nice job Steve, and thanks for writing up those...

Nice job Steve, and thanks for writing up those great diagnostic steps.

You've reconfirmed my opinion that those HuanYang VFDs leave a lot to be desired. I now regret having resisted ranting at...

Forum: 50. Toolheads

Tue 05 May 2015, 19:54

Replies: 30

Tuning my Spindle

Views: 45,855

Posted By bradm

Sounds like the G540 swap will be the next...

Sounds like the G540 swap will be the next diagnostic step :)

If you can get at the parallel port pin, you can try to see if it moves linearly from 0 to 3.3 or 5v as you go up the range. You'll...

Forum: 50. Toolheads

Tue 05 May 2015, 18:37

Replies: 30

Tuning my Spindle

Views: 45,855

Posted By bradm

Ask Geckodrive, they have great support. My...

Ask Geckodrive, they have great support.

My understanding of that circuit is that it's simple Pulse Width Modulation through an optoisolator, and then integrated into a voltage with a capacitor on...

Forum: 50. Toolheads

Tue 28 April 2015, 20:37

Replies: 30

Tuning my Spindle

Views: 45,855

Posted By bradm

1) Somewhat. It implies that you have some...

1) Somewhat. It implies that you have some noise on the analog speed control line. You might want to consider adding a little bit of capacitance. Too much and you'll notice that you are limiting...

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