![]() ino code for this plotter is attached.Ĭopy the contents of "CNC_drawing_arm.ino" to a new "sketch" and save it using the same name (less the. ![]() If the motors are too close the elbows may make contact with the pulleys when the pen is at the top corners of the paper. The base board should be large enough for a sheet of A3 paper plus about 230mm of clear board above the paper for the motors. Mount the spindle by sandwiching the base-board between two nuts and two large flat-washers as shown in the last photo. Sliding the spindle towards the paper will tension BOTH timing-belts. Create a "spindle" by cutting the bolt to length with a hacksaw.ĭrill a 6mm hole and elongate it towards the paper as shown in the third photo. Mark the position of the bolt on the center-line. Place a GT2-200 timing belt over both pulleys as shown in the second photo. ĭrill clearance holes for each motor shaft. The holes shown in the second photo are spaced 10mm either side of the center-line and 10mm from the top edge of the base-board. I used "masking tape" as shown in the first photo.ĭraw a center-line at the top of the board then drill the corner holes for the motors.
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