Automated Touchless Tool Box

thingiverse

I designed an automated toolbox that activates via touchless ultrasonic sensor. The toolbox is compact, meant for desktop storage of smaller tools that often get lost in main desk drawers. My paper detailing the original concept and build was published in a leading international engineering journal, but I felt it fell short. I rewrote the main housing and overhauled the delivery system. In version 2.0, seen here, there's a working drawer assembled using servo actuator additions designed for SG90 servo motors. A battery compartment holds a 3xAAA battery dock (powered by 3xICR145000 lithium ion batteries) and a functional closure. An Arduino nano with Funduino board is the brain behind this design, though other boards can be used. The board bracket is specifically designed for this combination. The design involves numerous pieces that fit together easily during the build process. All files for this design are included, with some portions cut in half to accommodate smaller print beds. I plan on posting the program file once the final servo values are fine-tuned. I'm still tweaking the overall design, adding more pieces based on testing results. These additions will be posted as they're developed. *UPDATE 03/07/19* I fixed the sensor housing issue. After printing, it was too short to sit flush with the main body, so I corrected this and added a new sensor housing file. *UPDATE 03/09/19* The original servo actuator bracket was designed for freely spinning motors. Since SG90 servos don't work well with the initial design, I completely reworked the servo actuator using a 3:1 gear drive. The larger drive gear fits over the servo motor, while the driven gear rests on the actuator post, together activating a greater degree of travel with the pusher arm in normal servo motor movement. The drawer was resized to accommodate this change in the actuator design.