MPCNC 525 Laser Mount

thingiverse

This is a 445nm 2.5W laser diode mount with support for two line lasers for precise positioning. A battery holder for a C2025 battery and a push button switch to power the line lasers are included. I attached it to the back of the laser mount using super glue after completing the wiring. The 2.5W laser is sourced from eBay, available at http://www.ebay.com/itm/231968432876?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT. The line lasers are also purchased on eBay, listed at http://www.ebay.com/itm/222120750683. A note of caution: if you purchase the 2.5W Laser Diode mentioned above, be aware that my unit had its TTL input wires reversed. I notified the seller, who has since corrected the photo to show the correct polarity. The white wire is + and the blue wire is -. Moreover, it's essential to note that leaving the TTL input open can activate the laser when a 12-volt supply is plugged in. Be extremely cautious with these lasers as they are hazardous and always wear protective goggles when handling them. To modify the Marlin software, I configured the FAN output to a 5-volt TTL PWM logic level on the RAMPS 1.4 board since I drive the RAMPS at 12 volts. The D9 output would have damaged the diode driver otherwise. I will provide more information on this modification later. EDIT: I added the original MPCNC version. Note that I don't have a way to test it, as I only have the updated MPCNC machine. However, I took the part that mounts to the CNC machine from another STL file and modified it to fit my laser mount. Print Settings: Printer Brand: RepRap Printer: Prusa I3 H3D Rafts: No Supports: No Resolution: .3mm Infill: 40 % Notes: Printed in PLA at a 60-degree bed temperature and 195 extruder temperature with flow set to 90% using RED PLA from http://www.ebay.com/itm/111384500750?_trksid=p2060353.m2749.l2649&var=410367780401&ssPageName=STRK%3AMEBIDX%3AIT.