Problems with v2.3 Stepper Drivers

[fedrer]

I'm trying to get all of the electronics up and working for my RepRap, and I'm having trouble at the first components I'm attempting to prove, my Stepper Drivers. I have four of the v2.3 Stepper Drivers, and all four exhibit this behavior similarly.

Basically, they'll come on and work great for 30-60 seconds and then become unresponsive to input from my Arduino. The four LEDs that indicate the power status for a given channel will flicker in a seemingly random manner, and as I said it becomes unresponsive to input. The sketch I'm running on my Arduino is Adrian's simple sketch he offered for driving the motor to spline itself.

After some forum searching the best guess I could make was with my PSU needing a load on all channels for it to provide power properly, so I've soldered up a circuit with 3 100 Ohm 10 Watt resistors grounded to create a light constant load. The PSU in question is a new 500 Watt EATX and the voltage output seems stable on my Multi-Meter but I do not have an O-Scope so I have no idea how clean the supply is.

Has anyone encountered anything like this? Any ideas on what my problem might be? Thanks in advance,






________________

Life Insurance Quotes
resume writer