dudaj píše:
Asi bude záležet na desce jakou máš. Já předpokládám, že na mé je k tomu určen potenciometr osazený v driveru.
Einsy RAMBo (MK3S/+)
https://shop.prusa3d.com/cs/mk3mk3smk3s ... -mk3s.htmlNa tom snad ani žádný trimr není.
https://www.trinamic.com/fileadmin/asse ... asheet.pdf1.7 coolStep – Load Adaptive Current Control
coolStep drives the motor at the optimum current. It uses the stallGuard2 load measurement
information to adjust the motor current to the minimum amount required in the actual load situation.
This saves energy and keeps the components cool.
Ovšem v kapitole 10 se píše:
PRINCIPLE OF OPERATION
A reference current into the AIN/IREF pin is used as reference for the motor current. In order to
realize a certain current, a single resistor (RREF) can be connected between 5VOUT and AIN/IREF (pls.
refer the table for the choice of the resistor). AIN/IREF input resistance is about 1kOhm. The resulting
current into AIN/IREF is amplified 3000 times. Thus, a current of 0.5mA yields a motor current of 1.5A
peak. For calculation of the reference resistor, the internal resistance of VREF needs to be considered
additionally.