Originally Posted by
johnohara
Hi MelvinBruce~
Saw your configuration and recognized it as being
nearly identical to the controller I built for my
Techno-Isel project. In fact, I used the same
diagram you show in photo #1 -- the one given on
the RepRap Wiki. I also note that you used a
RAMPS 1.4 shield for an Arduino 2560. I did the
same thing.
However, there is an important difference between
our configurations which I feel compelled to point
out.
Each motor driver must have its own connection to
the power supply. Your photo indicates that power
is provided to all of the drivers from the same
+/- connection on the power supply. That is not
correct and will create problems.
I purchased two (2) power supplies, each capable
of driving three (3) motors at 36V, not to exceed
9.6 amps. The power supplies have three (3)
positive and three (3) negative connections
plus two (2) connections for the main supply
(120V in the U.S.).
Positive / Negative 1 goes to motor driver 1.
Positive / Negative 2 goes to motor driver 2.
Positive / Negative 3 goes to motor driver 3.
In other words, you need to rewire the motor
drivers so they each have their own circuit.
Hope this helps.
~John