Tutorial SMC3 Arduino 3DOF Motor Driver and Windows Utilities

Excuse me. I appreciate the help but I still don't understand anything.

Give me a practical example please. What is the amount I need to fill so that my engines are in the highest position?

So I downloaded this code to help with my issue where one motor would turn the same direction regardless of which side of the blue target line the pot input was on, but now two motors are having that problem.. Does anyone know what the cause could be? I attached a video of the issue.

https://www.icloud.com/photos/#0obJ8k_HcZSrAHX0wWI32k6Fg

Hello, not sure to be on right thread.......I can’t figure out what I have to send to smc3 rc model sketch using Processing to send my data
I know that Format is supposed to be RxxxLxxx~But I can’t translate that in terms of serial.write () instruction in Processing
Has anyone a suggestion ? should be delighted

Hello, please help, I test my engines on the SMC3, start the cycle but stop, it seems that they lose strength, does anyone have an idea of what it could be?
The engines are weight free in this test.
Thank you.

Your green line (the pot feedback) is stopping sending information, or i get it wrong?

But i also have a question that's been bothering me for some time:
Can someone explain to me what Fpwm is changing in practice? Unfortunately I have not really understood it until today. My frame moves the same, no matter if 5 or 30khz. Will the engines become less hot on less khz? Would be very nice to know from you guys.

Thanks, but that's not what I meant. What's the difference in practice?

Thanks! In the comments of this link, i found the answer i searched for:

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"A practical motor behaves roughly like a resistor and inductor in series with a real motor. For efficient operation you need should switch between connecting the motor to the supply and shorting it out. While the motor is connected to the supply, the current will become more positive. When shorted, it will become more negative. Efficiency will go downhill markedly if the current switches polarity, because the motor will spend part of each cycle trying to mechanically fight what it's doing in other parts.

From the standpoint of the motor itself, efficiency will be at its best when the PWM rate is as high as possible. Two factors limit the optimum PWM rate, however:

Many motors have a capacitor in parallel with them in an effort to minimize electromagnetic interference. Every PWM cycle will need to charge and discharge that cap, wasting a full load of energy. Losses here will be proportional to frequency.

Many H-bridge switches take a certain amount of time to switch; while they are switching, much of the power going into them will be wasted. As the PWM on and off durations shrink toward the point where the bridge is spending most of its active or inactive time switching, switching losses will increase.

What's most critical is that the PWM rate be fast enough that the motor doesn't fight itself. Going faster beyond that will improve motor efficiency somewhat, but at the expense of increase the other aforementioned losses. Provided there isn't too much parallel capacitance, there will generally be a fairly big range of frequencies were PWM losses are minimal and motor current polarity remains forward; a frequency somewhere near the middle of that range will probably be best, but anything within that range should be adequate."

Hello, I manually activate the potentiometers and the same effect happens, the motors stop.

Do the switches still stay "on", or they turn into "off"? (like on the picture i created)

Very good introductory tutorial, I believe that under the guidance of this tutorial I will quickly complete my motion simulator platform!

[QUOTE = "Bastiuscha, post: 200610, membro: 25016"] Os interruptores ainda permanecem "ligados" ou se tornam "desativados"? (como na foto que eu criei) [/ QUOTE]

Yes, they remain on, and when I operate the pots manually, I cross all limits, but I do not move, it seems that there is not enough energy to move.

Then it looks like it's your motor driver. Or really your power supply is the reason. What you use as driver? There is no error led active?

OK, THE SOURCE IS OK, I WILL OPEN THE BOX AND CHECK THE H BRIDGE (MONSTER SHIELD). THANK YOU.

FOLLOW VIDEO OF ELECTRONICS

Hi,

thanks for that great tutorial and how to build.

I build the Same as Mode 2. Arduino Uno R3 with 2 IBT-2.

I completely wired one IBT-2 to the motor and the arduino board.

Before i uploaded SNC3 to arduino. If i start SNC3 Utility i can set all to 0 like
mentioned in the tutorial. After that i power up the motor.

I went PWMmax to 255 but the motor do nothing. Only one grey line goes up.
If i manualy circle the pot the green line is moving.

Is there something in the settings which i made wrong?

Greets
Özden

EDIT:

Nevermind. It is up and running. I now understand max limits and clip. The Potentiometer
was fully on one side so it allways clips directly without starting the motor. Great.

Hello @RufusDufus, pure curiosity, I wanted to know why ibt2 feeds with 5v to pins 7 + 8gnd? I tried to remove the 5v from ibt2 + and it works the same.




Another question: is it normal for all the oscillations of the PWM and the potentiometer? as can be seen from the screenshot. Then in the engine it makes noise even when I put it in manual and it is stopped. I tried to lower kp from 400 to 300, but only if I lower it to 200 does the noise disappear but the engine becomes slow. If I raise the minimum PWM it makes even more noise. What can it depend on? Thanks in advance

Hello. I have a serious problem. It seems like everything works. Everything works fine in the SMC utility, but when I load simtools game engine the platform movements become very strange. When I start output testing and start moving the sliders, with a value of "1" the platform moves almost to the maximum and the difference between the values of 1 and 100 is not very significant. I have a 2dof platform. It's almost impossible to play. The platform jerks from one maximum to another (((Once again, in the test utility, everything works smoothly and the platform deviation angle is correct. The SMC and SIMTOOLS "centers" are different. That is strange too ((((
When I take the slider in simtools to minus, it works from zero of simtools . When I take the slider to plus, it seems to work from zero SMCUtil. The difference between zero of simtools and zero of SMCUtil is this jerk.

As I see it - the problem is just in different centers between the simtools and SMC .


SOLVED You have to change Win Regional Settings to English )))))