i changed the ramps baord and it all works fine, the board was defective somehowby bobdoll - RAMPS Electronics
whatever i movements i send to X axis doesn't work (M18 works fine, i cut the current). but Z works fine (using the same motor, i move the cables). I guess the board has connection prob on X & Z. I wonder, i know the jumpers are for the steps control, but how does that work when i use the driver directly on arduino (with 12V power on the motor pin), it work just fine and there are no jumperby bobdoll - RAMPS Electronics
I guess the fuse is OK since Z axis works fine, i also see power consumption when received gcode order. Z nothingby bobdoll - RAMPS Electronics
Here is a picture, but outside the drivers orientation, from what i can tell not much can be plugged in the wrong way. I guess my next step is to trace each connections with a multimeter to see all the pins connect properly to arduinoby bobdoll - RAMPS Electronics
yes there is 12V connected, with an amp meter to monitor the power usage from the motors. The 3jumpers are all there on each controllerby bobdoll - RAMPS Electronics
Hi, I'm trying to get this small CNC to work with ramps : I was wondering how to calculate the MOVEMENT SETTINGS in marlin firmware ? is there any good tuto out there ? DEFAULT_AXIS_STEPS_PER_UNIT : it seems that it should be 2560 (nema 17 1/16 microstep on board, leadscrew M8) DEFAULT_MAX_FEEDRATE ? when i send G code manually, F25 works, anything higher seems to make the motors step and do nby bobdoll - CNC Routers, Mills, and Hybrid RepRapping
Hi, Quite new to RAMPS, but not to arduino. I'm trying to get a small china 2020 CNC machine working - I have an arduino mega + a ramps 1.4 and 3 a4988 drivers. I have tested each driver 1 by 1 with a simple arduino sketch, they all work fine - I upload Marlin-1.0.2-2 and try with ramps + repetier-host-1.6.2 and motors make high pitch noise on X, Y nothing (no amps used), Z worked fine > 1/by bobdoll - RAMPS Electronics