bonjour barj,
je connais pas les deltas, en recherchant j'ai trouver ça :
For Marlin in Marlin.ino.Marlin.pde
DELTA_RADIUS is
DELTA_SMOOTH_ROD_OFFSET - DELTA_EFFECTOR_OFFSET -DELTA_CARRIAGE_OFFSET
To correct the problem, the best course is to change one of the variables set earlier to force the value of DELTA_RADIUS to increase(to lower the extruder nozzle) or to decrease (to raise the nozzle).
To lower the extruder nozzle
increase DELTA_RADIUS by increasing DELTA_SMOOTH_ROD_OFFSET(Marlin) or PRINTER_RADIUS(Repetier).
To raise the extruder nozzle,
decrease DELTA_RADIUS by decreasing DELTA_SMOOTH_ROD_OFFSET(Marlin) or PRINTER_RADIUS(Repetier).
For your first cycle, if you are above the build surface, increase DELTA_RADIUS by (about) the same amount. If the extruder nozzle hits the build surface, decrease DELTA_RADIUS.
à ce que je comprend tu dois plutôt changer le paramètre DELTA_SMOOTH_ROD_OFFSET
tu peut trouver des réponses là :
http://forums.reprap.org/list.php?110
où là :
http://forums.reprap.org/list.php?178