Hi all!
Today I was testing for the first time my ramps board, and I burned two y-axis stepper drivers (a4988) in the same situation.
I use an atx as power supply, and before removing diode D1 from the ramps board, I burned an Arduino Mega 2560 ( :X ) simply powering on the atx. After removing the diode (obviously I had to use a new arduino), again just powering on the atx caused the y axis a4988 to die. And it happened twice!
So, is it ok to suppose that the atx is the problem (maybe it gives some sort of voltage peak on power on) and that I need to purchase a 12V 20A PSU? Or maybe I have to look for something else before wasting money and cooking another Arduino?
Also, do you think that powering on the atx, and then connecting it the board could solve this problem?
Thanks in advance!
Tobo
Today I was testing for the first time my ramps board, and I burned two y-axis stepper drivers (a4988) in the same situation.
I use an atx as power supply, and before removing diode D1 from the ramps board, I burned an Arduino Mega 2560 ( :X ) simply powering on the atx. After removing the diode (obviously I had to use a new arduino), again just powering on the atx caused the y axis a4988 to die. And it happened twice!
So, is it ok to suppose that the atx is the problem (maybe it gives some sort of voltage peak on power on) and that I need to purchase a 12V 20A PSU? Or maybe I have to look for something else before wasting money and cooking another Arduino?
Also, do you think that powering on the atx, and then connecting it the board could solve this problem?
Thanks in advance!
Tobo