Showroom Blame73's 2DOF Seat Mover

Hey there, I've been a little out fo the loop for a while, so I'm a little rusty on the setup. Blame is always the goto guy in general but......

mdds30s runing 2 motors with Blames Arduino code.


So I did some digging & wrote some stuff that doesn't quite match becasue I think I remapped a pin here and there

From what I can gather you need for

MOTOR 1 (Left)
IN1 to Arduino Pin 2
AN1 to Arduino Pin 9
Encoder pot to Arduino Pin A0

Motor 2 (Right)
IN2 to Arduino Pin 4
AN2 to Arduino Pin10
Encoder pot to Arduino Pin A01

I know Blame had done a variant of his controller Arduino code for me & I know we did some later testing but I can't remember what the outcome was.

Start with what I've said, see if it works & if it doesn't come back.


MDDS30 Pins (explanation)

AN2 (Analog/PWM signal for motor RIGHT)
AN1 (Analog/PWM signal for motor LEFT)

IN2 (Digital signal (direction) for motor RIGHT)
IN1 (Digital signal (direction) for motor LEFT, or can be used for Serial mode)

Arduino Pins

@p00ky thank you so much, I will certainly try this when I get home!

Hello @noorbeast I’m using 2 24v jazzy wheelchair motors specifically the DRVMOTOR1302 with 2 mdds30s to drive o e each. I do not have a big enough power supply to run them both on one and I did not know the md30c existed before buying so I have 2 mdds30s and I want to drive one motor per controller.

thank you so much! It’s working great now!

Hey

Hey, out of the loop for a while too. Maybe with AC EVO out I'll turn the thing on again. Glad to know is still working with my code.
Thanks for helping @Marlon8232 out

Glad to hear you got it working. The wiring on the Mdd30s is odd as you would think they would have had one plug for one motor but instead they have all the pwm pins on one & the enable lines on the other.

One thing of note though is the Mdd30s is supposed to be used with a battery, where as there is no specification for it on the md30c. I use a small car battery on mine & use a server psu running through a diode to continously charge it. It's possible that if you run it this way, your small psu would be enough to keep you going while using a single Mdd30s for both motors, & save you from possible driver explosion

Yes Blame, Evo is dragging us all back to the saddle....... JOIN US

Hello! I’m back again, and my rig is working very well. Ive been researching a way to add a soft start to the smc3 ini but i no luck. I’m not a coding expert, and I was wondering if there was a way to transplant the code from the other smc3 modified versions into the blame73’s. Also I cannot find the latest version of blame73’s smc3 ino so I’m running the one p00ky posted on mega lol. If you guys have any ideas of a way to add soft start so my rig doesn’t tear it self apart every startup, that would be nice.

Hey up again, glad you have it up and running.

That said, I don't remember ever posting anything to mega, I'm guessing it was when blame and I were doing some testing. Dont know.

As for coding, I'm afraid I'm more than useless at that side of things. It's a question for blame I'd say.

The one from Mega is my code, as are mine the ones I gave to p00ky. I never needed softstart, so it's not implemented (and I have no time to code it), but there's a scaler, try using it.
Warning: I can't help you out with that, sorry

ok, will do!

Thanks to @Blame73 and @p00ky for documenting getting these MD30Cs going. I have been reading as much as I can I

I read a thread by @ChrisOmaha titled ChrisOmaha 2DOF Build Thread. Unfortunately I am new and can’t post a link yet

It appears that he is using Mode1 with the SMC3 and have success, would this provide the same results as your modified mode2? Or am I overlooking something

thanks!