Thanks Andrew. Yes, I'll be measuring from the top of the pot and the negative lead into the power area. The question was really related to identifying a starting position to fire-up the motors. Thanksby spurtee - Reprappers
Hey I got info from my maker. On the DRV8825 the mid-point of the 270 degree range is at 9 o'clock. So, allegedly the range would be something like from 5 o'clock to 2 o'clock or 4 o'clock to 1 o'clock - low to high. ANY OTHER THOUGHTS ? Where does anybody else have their DRV8825s set at ? Does no-one use the DRV8825 ? I believe my maker but he wouldn't give me a range, so I had to interpretby spurtee - Reprappers
Thanks ejbantz BUT, I know how to orient the chip in the RAMPS board. What I need to know is - what is the position of the flat-side on the DRV8825 to setup for the motor. A4988 aims the flat-side to 10 o'clock to begin the setup. This is less than the mid-point for the distance between the pot stops. Trying to get the voltage correct for the DRV8825s. Aiming for .47v. My pots don't have stby spurtee - Reprappers
Hey JPT, If your pots are on the right, you probably have the A4998 chips. Supposedly, the flat-side of the pots should be aimed at 10 o'clock. If you've got stops on your pot, so you can identify a max - your ahead. Mine don't and just turn around. With your stops what is the range? I've heard it's from 7 - 4, low-high. I see your X is twice that of Y. Maximum feedrates (mm/s): Mby spurtee - Reprappers
Hi Trying to finish my Morgan. Using 2 DRV8825s and 2 A4998 driver chips. I know for the A4998, if the power from the board is on the left, with the pots to the right on the chip placement, the potentiometer range is from 7 o'clock til 4 o-clock - with the alledged sweet spot at 10 o'clock ~ .5v What is it for the DRV8825. The two chip types are oriented differently with the pot on the left ofby spurtee - Reprappers
Hey JPT Working on my own - with similar problems to your description. What were the setting changes you made to get to work? You say you've reduced the "max Z speed", but I don't know which config parameter that identifies ? Are you using A4988 or DRV8825 chips. The A4988, oriented with power on left pot on right, are supposedly set to 10 o'clock. DRV8825 are oriented with pot to left, towarby spurtee - Reprappers
What was your solution? Where are your trimpots set? flat side at 10 o'clock ? My motors don't move. Thanksby spurtee - Stepper Motors, Servo Motors, DC Motors
What params in config are you changing? Acceleration or Max_acceleration ? or what? Seems like with the results your reporting maybe the steps_per param could help. At least your getting movement - you're ahead of me. You may want to post your problem in the Mendel and Prusa (http://forums.reprap.org/list.php?151) forum.by spurtee - Stepper Motors, Servo Motors, DC Motors
Hi Did you ever figure out your stepper wiring ? I have the same wire colors as you. And they are hooked in the same way. I've had a blown chip so haven't tested myself. How did yours end-up? Thanksby spurtee - Reprappers
Morphos ! Any comments?by spurtee - Polar Machines, SCARA, Robot Arms
Hi Jeff, I live in Indiana, near Fishers on Indy's North-side. Where is your filament factory located? Any job openings? BTW, I have a Morgan for my printer. Thanks. Steveby spurtee - General
Hi Been almost a year since your post - any progress? I live near FIshers, on Indy's North-side. I have a Morgan that I have built. Steveby spurtee - Wanted
Hi There I am a maker with 3d printer. I live in the heartland - outside Indianapolis. Come to realize, the 3d printer is just a device. Whether it prints in plastic or with lasers/EBM and metal - just a machine. I've got a great one, following Quentin Harley's Morgan v1 design. Moving arms cooler than cartesian or deltas. Certainly cool and fun with all it's intracacies and beautiful creatioby spurtee - Let's design something! (I've got an idea ...)
Hello Anyone, I am a builder here near Fishers. Is anyone building anything? Making any sales? Finding money anywhere? Take care.by spurtee - RepRap User Group Indiana (Indianapolis)
?? Looks like Aliexpress.comby spurtee - For Sale
Hi - anybody out there ??? I'm Steve. I am wondering how many people are using 3d printers? Figure the reprap forum is as good as any for a poll. I live on North-side of Indy. I've been to the Club Cyberia. Ok place, they have a mendelmax. Used some. I am currently building a Morgan SCARA bot printer. Anyone else building? Got a great commercial space for makerspace or retail. What do youby spurtee - RepRap User Group Indiana (Indianapolis)