I initially set the Microstepping to 2 and adjusted all the values. See my screenshot in this thread: Stepper driver change for no-noise bot - #56 by pinae
I also tested the suggestions of @Ascend (Stepper driver change for no-noise bot - #57 by Ascend) but 2.5 Steps/mm are too low and the distances are wrong. During these test I also tried Microstepping 1 and doubling the Steps/mm to 10 which works exactly the same as the initial setting. So I currently know two sets of settings which lead to correct movement distances and matching encoder values.
Today I connected a notebook via USB to the Farmduino 1.4. I tried Pronterface for the connection (baudrate 115200) and received a lot of messages from the Farmduino. I was not able to send commands because Pronterface did not think it was connected to a 3D printer and refused to send commands. Which serial terminal is suitable for communicating to the Farmduino (I’m using Linux)?
Interestingly I could already see falsely scaled encoder positions in the serial output. Here is an excerpt of the Messages sent by the Farmduino:
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X-59657096.00 Y-0.40 Z-1.92 Q0
R85 X-2147483636 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X-59657096.00 Y-0.40 Z-1.92 Q0
R85 X-2147483636 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X-59657096.00 Y-0.40 Z-1.92 Q0
R85 X-2147483636 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
R82 X0.00 Y0.00 Z0.00 Q0
R84 X0.20 Y-0.40 Z-1.92 Q0
R85 X12 Y-21 Z-347 Q0
R81 XA1 XB1 YA1 YB1 ZA1 ZB1 Q0
R88 Q0
R00 Q0
This proves that the Problem is not in FBOS but in the Farmduino firmware. Any ideas for further debugging?