Anet A8 Optical Sensor Mount for Omron Spy 412 Auto Bed Leveling

thingiverse

Somewhere in the depths of the web, I stumbled upon a user who experimented with the Omron EE SPY 402. After carefully reading the manual, I quickly decided to purchase one for myself and two more as gifts for friends. Please refer to the manual and technical specifications here: https://www.ia.omron.com/products/family/440/specification.html The key features of this device include a modulated active IR sensor, short range detection, 5V power supply, and NPN output, allowing it to be directly connected to original Z-switch connectors. Unfortunately, I accidentally ordered a used Omron EE SPY 412 instead. Although the type is slightly different, it shares similar features: modulated active IR sensor, short distance detection, 5V power supply, NPN output, and extremely lightweight design. This setup is specifically designed for users with firmware enabled for autoleveling (I'm a Skynet user). To enable autoleveling on your printer, follow the steps outlined in this guide: https://3dprint.wiki/reprap/anet/a8/improvement/autobedleveling When testing triggering, use white paper and observe the built-in LED. Triggering on glass beds often results in a brief flash around a hotspot. You will need one JST XHP-3 plug for this setup: https://www.amazon.de/S%C3%A4tze-2-5-3-Pin-Stecker-Stecker-Draht-Buchse/dp/B01DU9OS5K/ref=sr_1_fkmr0_1?s=toys&ie=UTF8&qid=1491909206&sr=1-1-fkmr0&keywords=JST+XH+2.5+3-P In contrast to using capacitive, inductive, or mechanical sensors like BLTouch, you can simply plug this sensor directly into the board's three wires without needing an octocoupler or additional resistors. Wiring is remarkably easy: solder three small wires (approximately 1m each) to the sensor while being cautious of temperature fluctuations. Connect Ground to Ground (-), 5V to VCC (+), and Out to Signal. For wiring details, refer to this guide: https://3dprint.wiki/reprap/anet/a8/improvement/autobedleveling I designed a straightforward sensor mount using plastic dowels that fit snugly into the non-threaded holes on the lower rear of the slides without screws. You will only need 2x M3 screws and nuts to secure the sensor. Ensure the nozzle is positioned below the sensor by approximately 1mm for accurate readings. Print Settings: * Printer: Anet A8 * Rafts: Doesn't Matter * Supports: No * Resolution: 0.1 / 0.2 * Infill: 20% * Notes: Be cautious, as plastic dowels are prone to breaking. Instead, use hot glue to secure the flat plate on the back. The omron.stl file works with Slic3r, and the omron2.stl file is also compatible with Cura.