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And you'd also watch for resonances...
I was told so when I was designing the PWM board, but I wanted to stay the simpler the better, and went the analog way.
25KHz would be enough for a well calculated LC filter. In fact, it can be done with 500Hz, but the inductor size would be huge and expensive.
I got some Aliexpress fans that worked ok, but they work even better with the PWM boards (they no longer whine now, and having a silent...
You could try setting the fastest PWM frequency you can and use a LC lowpass filter. I couldn't go this route because I use a Duex5 which has a...
I went the overengineering route: https://forum.duet3d.com/topic/21680/designing-a-pwm-to-analog-mini-board-for-fans/123?_=1625991786160
I have quite an army of fans that respond very bad to PWM control, even more with Duex5 fixed PWM frequency, so I'm going bold and designing a...
Follow up: it ended up being a extruder problem: lack of grip. I didn't realize that the toothed gear of my extruder was grinding the filament a...
Hi everyone! I been about 2 years with a custom made printer, and I had one of the chinese PTFE lined hotends from Aliexpress, printing mostly...