9g Servo Electric Screwdriver

cults3d

UPDATE: We've added a new servo coupler and bit-holder system for improved stability, requiring just two 608zz bearings. Check out the exploded view diagram to see how it all fits together. Here's a 5-volt, 9g servo driven, thumb joystick actuated Arduino Nano controlled electric screwdriver with wiring and assembly diagrams in progress... It works in both directions with variable speed control, designed specifically for driving small bolts (M4 or smaller) rather than screws into materials like wood. Initially, it was an experiment to see if spare parts could be used to drive a small set of jeweler's screwdrivers. Check out the video for more information including assembly: https://www.youtube.com/watch?v=2Dua8SScsfk Don't toss your real electric screwdrivers just yet - this is a fun project with plenty of room for improvements! This project demands friction welding. Get the tutorial here: https://appliedtechnologylab.blogspot.com/2018/06/3d-printing-tutorial-friction-welding.html. It also requires converting the 9g servo to continuous rotation, which can be done using this tutorial: https://appliedtechnologylab.blogspot.com/2018/11/converting-9g-servo-for-continuous.html. #Parts Required: Thumb Joystick, 9 pins (https://www.gravitechthai.com/product_detail.php?d=1024) Arduino Nano DC barrel adapter, Female (the 35mm version, not 40mm) 9g Servo (modified for continuous rotation, tutorial here: https://appliedtechnologylab.blogspot.com/2018/11/converting-9g-servo-for-continuous.html) Rocker Switch (12x19mm) Jumper Wires M3 bolts 20mm x 2 M3 bolts 10mm x 2 M3 nuts x 4 M3 washers x 2 (2x) 608zz bearing (hot glue it into the housing) #Powering the Screwdriver Use a 5V DC power adapter or a 6V DC adapter if you can find one. Alternatively, try using a 4x AA battery pack like this: https://www.gravitechthai.com/product_detail.php?d=1428 and a male DC power adapter like this: https://www.gravitechthai.com/product_detail.php?d=181. We're working on a cordless version after experimenting with AA batteries. Our goal is to use something anyone can easily obtain but also practical. #Holding Screwdriver Bits We've updated the files. The servo coupler (servo_Coupler.stl) has a hex head that interfaces with the screwdriver bit holder (ScrewDriver_BitHolder.stl). The original coupler, bit holder, and screwdriver handle holder are still included. #Other The SketchUp file is included. Feel free to modify it and remix it. Arduino code is also in the thing files (.ino file).