Topics created by cristian.spiescu

My findings:

1/ I needed to switch this to disable (or eliminate the line). Really curious. You give the command "please enable", and it does the opposite. In my opinion this is a bug.

I'm pretty sure we are talking about a bug. I.e. that boolean is somehow interpreted negated.

My question is the following: how can I use precise movement?

I'm pretty sure the answer is NO (using this lib). I struggled a bit and wrote myself some code. But I ended using another lib. More info in this post.

Thanks for the tips @felmue 🙂.

I think I found a working recipe. My conclusions would be the following:

1/ For my motor, I am using P, I, D = 1, 0, 0. I think an even lower P coef would have worked, but the API doesn't accept it.
2/ W/ this values, I reach the maximum speed w/ speed =~30. Then if I decrease the wanted speed, the actual speed decreases as well. When I arrive at -14, the actual spin is 0. Decreasing more will make the motor turn the opposite direction.
3/ I find this negative value odd. I don't understand why it's offseted from 0.
4/ If I go the opposite direction, i.e. -50 and increase, the stop point is not -14 any more. It's about -3. So there is some kind of hysteresis effect.
5/ I'd say that the reduction of my gearbox (1:50) corroborated w/ the resolution of the encoder, pushes the PID params to the low limit.
6/ The position mode works similar to the position. However, when arriving at the set point, the motor oscillates (a lot if high speed; a bit, if low speed). So for me is no go to use this, although my use case does involve stopping at position. I'll use the speed + control it via the program; i.e. decrease it when approaching the target.
7/ I don't understand why the PWM mode oscillates. In my opinion it's a bug. I don't think the PWM mode should have used the feedback of the encoder.

So all in all, I'll be able to continue my project now. 🙂

I think the unit is defective. Interesting, because other things work: display, program w/ UI Flow, etc.

I tried several M5Stick, M5StickPlus, M5StickPlus 1.1. They all work. Only the initial M5StickPlus 1.1 has this issue. And BTW, it behaves similarly when connected to a servo HAT.

Hey, guys. I hear the same sound whether we make an RFID module, USB module or GPS module. When communicating with any of them, the sound is heard.

And in my opinion, it is not the sound from the speaker, because it can be heard even if I turn off the speaker software (and even if I disconnect it completely). The beeping is coming from some components...