piektd., 2025. g. 5. sept., plkst. 12:00 — lietotājs andy pugh
(<bodge...@gmail.com>) rakstīja:
>
> On Thu, 4 Sept 2025 at 21:03, Viesturs Lācis <viesturs.la...@gmail.com> wrote:
>
> > I would like to avoid doing DIY Arduino project
>
> If you change your mind, the TTGO-T-display might work (or the display
> might be a little too small)
>

Do I understand correctly that it has both LCD and ESP32 controller?
https://www.aliexpress.com/item/33048962331.html

Display should be fine, IMHO 4 digits is enough (3 digits before and 1
after decimal point).

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.

The question is about encoder pulses - does this accept 5V inputs
directly? I did a small project for my solar inverter with Arduino
Nano ESP32 and that had 3.3V input tolerance

>
> That can count fast enough to follow a spindle encoder (in the example
> in the repository) but it is possible that your application might
> exceed the max count rate.
>

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?

Viesturs


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