Your robot's internal ruler may differ from the actual distance it is traveling after many hours of use.
As a standard maintenance procedure run the X & Y belt calibration to keep your machine
The X & Y belt calibration zip file contains binary files for both Mac and Windows operating systems. The binary file will run a pre-compiled python file it can simply be double-clicked to execute.
• Painter's tape
• Fine tip pen
• Metric ruler (millimeters)
The button below will redirect you to the Opentrons' Github page
Step 1: Line your X axis rain and YR axis rail with masking tape
Step 2: Download the master zip file for the X & Y calibration
Step 3: Unzip the file
Step 4: Open the folder with the calibration files
Step 5: Run the calibration file specific to your operating system
Step 6: Mark the origin position on the masking tape
Step 7: The program will prompt you to send the robot a certain distance in millimeters. For OT-Standards/OT-Pro send the robot 290mm for both the X & Y distance. The OT-Hood model is more compact and will not reach those limits, send the robot 250mm for the X and 200mm for the Y distance.
Step 8: Mark the final position the robot travels
Step 9: Measure the actual distance traveled
Step 10: In the program insert the actual distance traveled measurement
Step 11: The program will adjust the robot's internal ruler accordingly
Step 12: Disconnect your USB and Power supply and reconnect
Find the full video instructions on how to calibrate your robot's belts