Precision opto probe for auto bed leveling

prusaprinters

<p>This thing gives you the ability of probing your heatbed with all the benefits of an opto endswitch - like a constant switchpoint and almost zero wear-out. A minimum of moving parts and a maximum of reliability.</p> <p>Workload / Time :</p> <ul> <li>About 30 min. for printing</li> <li>20 min. for modifying the screw (can be done while printing)</li> <li>5 min. for assembly / adjustments</li> </ul> <p>= Total: ~ 35 to 60 min.</p> <h3>Instructions</h3> <ol> <li><p>Print the probe body.</p> <ul> <li></li> <li>Versions for Graupner Servo Family</li> <li>Versions for SG90 9G Micro Servo</li> </ul> <p>Each type is available for mounting the arm either from top or back (reverse).</p> </li> <li><p>Things to buy (vitamins):</p> <ul> <li></li> <li>2x M5 nut</li> <li>1x M5x40 screw</li> <li>1x spring about 14mm length, 7,3 mm width (or whatever fits)</li> <li>1x Opto endstop with TCST2103 (standard) type light barrier</li> </ul> </li> <li><p>Use a file to form the upper end of the screw into a flat swordlike surface (length about 10 - 12 mm).</p> <ul> <li></li> </ul> </li> <li><p>Remove screw head from the other side and form a tip end with the file.</p> <ul> <li></li> </ul> </li> <li><p>Assembly :</p> <ul> <li></li> <li>Slide the screw into the body (swordalike end first). Add the two nut and the spring.</li> <li>Put the sword end into the slot and move both nuts down the thread.</li> <li>Adjust the moveable length of the screw by turning the nuts.</li> <li>Fix the nuts by turning against each other.</li> <li>Attach everything to the servo by using a standard servo arm. Probably an additional small hole for the fixing screw must be drilled.</li> </ul> </li> </ol> Category: 3D Printer Extruders