On Fri, 5 Sept 2025 at 11:54, Viesturs Lācis <viesturs.la...@gmail.com> wrote:
> Do I understand correctly that it has both LCD and ESP32 controller? > https://www.aliexpress.com/item/33048962331.html Yes. It might be worth looking on Amazon too, the few euros more that it costs might be offset by less waiting and import hassles. > Display should be fine, IMHO 4 digits is enough (3 digits before and 1 > after decimal point). There is a very poor quality video of the hobbing thingy that I made here. It might give some idea of scale and appearance. https://www.youtube.com/watch?v=cUCWbt37Fc4 I think that there is also a version with a larger screen, looking on Amazon. > > Ok, I might try it, seems like that listing has version with enclosure > for almost 17 eur. I do not think that user would need to fiddle with > it any kind of settings, scale factor and home position can be > hardcoded. Might need a home switch / reset button? > The question is about encoder pulses - does this accept 5V inputs > directly? As far as I can tell, no. A resistor divider should fix that. Unless you can just run the encoder at 3.3V Having said that, looking at https://github.com/andypugh/LCD_Interface/blob/main/Documentation.pdf it looks like I ran that encoder at 5V and it didn't blow up. It might be better to run with 24V and an interface device, though, in an industrial environment. (depending on what the encoder can do) > I did not yet check how fast would the encoder spin and what is its > CPR, but I would like to think that ESP32 is fast enough - 1000 CPR > encoder at 3000 rev/min is 50kHz pulse rate. IMHO should be fine > especially if its only task is actually counting pulses. Or am I > missing something? In the example I was limited by stepper motor velocity, so never got as far as checking max encoder count rate. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1912 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
