Search found 3 matches

by Ayrol
Mon Jul 20, 2020 5:16 pm
Forum: Bug report
Topic: Geetech prusa I3 PRO B Print beyond the plate
Replies: 14
Views: 12905

Re: Geetech prusa I3 PRO B Print beyond the plate

A note to geeetech.... Men... the printers sold have "all the original data": motor step angle, gear ratio ... etc So if they are all the same, why I found thousand of different parameters? example for DEFAULT_AXIS_STEPS_PER_UNIT ? I really don't understand, if I don't touch or modify anything from ...
by Ayrol
Mon Jul 20, 2020 2:14 pm
Forum: Bug report
Topic: Geetech prusa I3 PRO B Print beyond the plate
Replies: 14
Views: 12905

Geetech prusa I3 PRO B Print beyond the plate

Goodmorning everyone. After a year of discreet printouts with this Prusa I3 Pro B suddenly it no longer works. So as not to get lost in chatter, here are the problems. 1) At the power on, the 3d touch repeated the cycle, "down, up" only twice and then stopped. after weeks of tests, firmware, etc I d...
by Ayrol
Mon Jul 20, 2020 2:41 am
Forum: Stepper Motor
Topic: Turning up current - A4988
Replies: 9
Views: 29224

Re: Turning up current - A4988

https://www.youtube.com/watch?v=wpUMptJo-xs Good morning, following the guide above and adapting it to a Geetech prusa I3 pro b I calculated the following: - step resolution 1/16 - SMD resistor R200 = 0,2 ohm - 42SHD0034-20B MOTOR = 5V 1A SO.... IMAX=VREF /(8xrs) VREF= IMAX(8xRS) VREF = 1 (AMPER MOT...