I am interested in powering servos from the RAMPS-FD, but I did not take the 3.3V logic level into accout. So I am wondering if it is a good idea to run them directly from the RAMPS-FD. I am looking forward to your results with servos!
I read once that it is advised to have a separate power supply for the servos (I think they can draw a lot of current in a very short moment). Moreover they can be driven with 6V (some high-voltage servos also with 7.4V) for more power and faster response, but 5V should also be fine (for most scenarios). Do you think making a small extension-board (quite similar idea to the EXT-4 or EXT-6 board from bobc) with a level-converter for the pwm-signal and a separate power supply (maybe just a line regulator with some large caps) is necessary to get the best performance out of the servos?
I read once that it is advised to have a separate power supply for the servos (I think they can draw a lot of current in a very short moment). Moreover they can be driven with 6V (some high-voltage servos also with 7.4V) for more power and faster response, but 5V should also be fine (for most scenarios). Do you think making a small extension-board (quite similar idea to the EXT-4 or EXT-6 board from bobc) with a level-converter for the pwm-signal and a separate power supply (maybe just a line regulator with some large caps) is necessary to get the best performance out of the servos?