Hi everyone,
I have bought a Melzi board and some 17HS8401 (1.8 A) stepper motors. To make the Melzi deliver 1.8 A current to the motors, I need to set the reference voltage of the stepper drivers like described here (Reprappro Mendel instructions). I have found this source to help me calculate what the reference voltage should be if I have a A4988 stepper driver. I have two resistors marked with "R050" on each driver.
However, the black stepper driver chip on my Melzi says "4988ET A1316 935T" instead of just "A4988" as I expected. I have not found any datasheet or even a description of A1316 driver, and hence this question to you:
What does this difference in marking mean?
Or, to be more specific:
Is it safe to use Vref = 1.8 * 8 * 0.05 = 0.72 V as reference voltage?
I have bought a Melzi board and some 17HS8401 (1.8 A) stepper motors. To make the Melzi deliver 1.8 A current to the motors, I need to set the reference voltage of the stepper drivers like described here (Reprappro Mendel instructions). I have found this source to help me calculate what the reference voltage should be if I have a A4988 stepper driver. I have two resistors marked with "R050" on each driver.
However, the black stepper driver chip on my Melzi says "4988ET A1316 935T" instead of just "A4988" as I expected. I have not found any datasheet or even a description of A1316 driver, and hence this question to you:
What does this difference in marking mean?
Or, to be more specific:
Is it safe to use Vref = 1.8 * 8 * 0.05 = 0.72 V as reference voltage?