preenfm Forum

PreenFM => preenfm2 and preenfm3 => Topic started by: zelea2 on January 23, 2018, 08:22:56 AM

Title: PreenFM2 encoders
Post by: zelea2 on January 23, 2018, 08:22:56 AM

Since I don't have a PreenFM2, I don't know what to expect as behaviour for the rotary encoders. Can someone please let me know how responsive they are?

The best I've obtained on my PreenFM2 version is about 4 steps per second with reliable detection and no back-skips. I've improved my detection as much as I could and the software is supposed to catch up to 25 steps per second but I don't think these encoders can handle that kind of speed (at least the ones that I have).

Is 4 steps per second acceptable or are your encoders better?

Title: Re: PreenFM2 encoders
Post by: zelea2 on January 26, 2018, 02:00:34 AM

No one? This wasn't a difficult question though. Just let me know how fast can you turn your encoders while still registering steps.

Title: Re: PreenFM2 encoders
Post by: matrix12x on January 28, 2018, 04:01:23 AM

It's at least 6 or so by my really crude testing.

Title: Re: PreenFM2 encoders
Post by: zelea2 on January 30, 2018, 07:59:20 AM

Quote from: matrix12x on January 28, 2018, 04:01:23 AM

It's at least 6 or so by my really crude testing.

Thanks for your testing. I've got that too now, between 6-8 steps per second without skipping. Turned out I just had to be more aggressive with my timing. 8ms high followed by 8ms low is considered a step and works fine.

Title: Re: PreenFM2 encoders
Post by: matrix12x on January 31, 2018, 01:07:11 AM

Cool. Hope it helped.