Pushing power into a motorshield and arduino, via the motors!
ive been fiddling with my polargraph, which unless it is being programmed by USB, or run over a 9V wall wart remains unplugged. (The 9V wall wart can supply 1.6A, so i have it plugged into the arduino jack, and am using the "power take off" jumper on the motorshield.)
anyway, while pulling my gondla down (which spins the stepper motors) i noticed the motorshield power light, and both arduino lights started flickering, i think the duino started booting up!
obviosuly it only spins for a second or two, and i dont THINK it shines as bright as it does under proper power.
Am i likely to knacker either the arduino or the motorshield do we reckon?
I think i had better add on a "joystick" to the board, to allow me to move the gondla using the electronics, rather than maually....
in other news, It is coming along nicely. I now need to find a nice 15 px x 15 px image to render! Grayscale probably sensible to start with, but i dont see why i couldnt run it three times, each with an R, Y and B pen in the machine....