Enjoying playing with mBlock to power an Arduino Uno robot with my son. Previously I was trying to get an untethered robot working with S4A, but it required a bluetooth connection which was never stable.
We are working on a car robot, and I’m wondering how to control the direction of DS04-NFC servo? S4A had a “motor” block which included a ‘reverse’ options - but in mBlock the only controls seem to be PWM output. I can make it spin around in circles nicely though…
Any suggestions?
Yes, it does turn the other way, but very weakly. I guess you can do this in hardware with an H bridge, but the “motor” block in S4A handled it in software.
Hm, usually that’s an indication of a low PWM number. did you try to increase the number? Just wondering out loud.
@tec_support, any ideas?
I tried various negative values up to -150, but same result: low power and sounds like it’s wheezing.
Normally, the negative values can make the Makeblock Servos rotate at reverse direction.
It looks like DS04-NFC servo isn’t from Makeblock, we are not sure if it can perfectly work with the program block since we haven’t done test with other brand servos.
Here’s the motor block example from S4A:
There’s no other hardware involved, so guess this just isn’t supported in mBlock. Too bad…
Well it works fine in Arduino code with servo.h included. I also see that the sample extension includes a ‘motor’ block. There is also an extension available for the Adafruit motor shield, but I don’t have that so can’t test.