2 Power Supplies Necessary?New Home › Forum › don’t use this one need to sort -Assembly – MPCNC › 2 Power Supplies Necessary?Tagged: electronics, power supplyThis topic contains 3 replies, has 2 voices, and was last updated by vicious1 1 year, 2 months ago.Viewing 4 posts - 1 through 4 (of 4 total)Author PostsNovember 3, 2015 at 12:17 pm #3983 hothParticipantThe parts list calls for a power supply available from Amazon – power brick style. It has a plug that looks like it fits the Arduino Mega.I would think that the RAMPS board would need a separate power supply to drive the motors, but I don’t see that listed as a part. Or does the one power supply feed both the Arduino and RAMPS boards?November 3, 2015 at 5:23 pm #3992 vicious1KeymasterNope 5A is enough for everything and an extruder. You only need more power for a heated bed.November 3, 2015 at 5:59 pm #3994 hothParticipantSo the Arduino passes power through to the RAMPS board? That’s cool.November 3, 2015 at 6:04 pm #3996 vicious1KeymasterThe other way, ramps passes some through to the arduino. The ramps is capable of using 2 power supplies as well, so it is an easy upgrade with no wasted money.Author PostsViewing 4 posts - 1 through 4 (of 4 total)You must be logged in to reply to this topic.