not quite sure...speed controller...spike.

[Max Lobovsky]

This may or may not be related, but i have found that lots of joystick buttons seem to flicker IE not giving a constant stream of 1's when they are being pressed. Our code now checks the button over the period of 3 or 4 frames to make sure its really pressed. This is probably a good idea for a winch button anyway, you wouldnt want it accidentally pressed.

[KenWittlief]

255 is not a valid output for pwms (victors) - it can make the communcation between your code and the layer above it lose synch

254 is the max you should ever output

that might be why your victor wacked out

or it could be it wasnt calibrated correctly - if you are certain you are sending it 127 and the motor is still trying to move, then it either needs to be recalibrated, or its not working correctly.

to answer your original question, it says in the robot section of the manual which motors you can use with spikes - Im almost certain a window motor would be ok.

[KenWittlief]

Originally Posted by maxlobovsky

This may or may not be related, but i have found that lots of joystick buttons seem to flicker IE not giving a constant stream of 1's when they are being pressed. Our code now checks the button over the period of 3 or 4 frames to make sure its really pressed. This is probably a good idea for a winch button anyway, you wouldnt want it accidentally pressed.

wow! im impressed that you discovered that by yourself!

Its called 'switch bounce' - when you close a switch or pushbutton it takes about a 1/10th of a second for it to make solid contact - the surfaces actually do bounce a tiny bit - so if a fast microprocessor is polling the switch it will see it go 00001101010011110111111011111111111

and your timing is right - 3 frames is about a 100 mS

nice catch!

[Ryan M.]

I will add that, in our code we had values of 255 being output and weird things were happening. I chnaged it after I saw something on here and the problem went away. At the same time I also changed something else, so it may be a coincidence though.