DB KÖF II, Gauge 1 (1:32) / 45 mm

thingiverse

The small diesel locomotive KÖF II was first introduced by the Deutsche Reichsbahn in 1932. They remained in service until 1999 with the Deutsche Bundesbahn. Many have survived, continuing to shunt on industrial railways and in railway museums. https://en.wikipedia.org/wiki/DRG_Kleinlokomotive_Class_II This is my first project designed using Fusion360. It was a significant learning curve from TinkerCad. I never intended to create a 100% accurate model. Instead, I aimed to capture the essential features of this nice locomotive, without worrying about every bolt and rivet. Video: https://www.youtube.com/watch?v=SfoTOIxP3wk I designed this locomotive in several individual components: * A motorized chassis. The wheels and pulleys screw onto M3 threaded rods and are mounted in bearings. Glue the wheels and pulleys to the axles. A pulley slides on the output shaft of the motor. A rubber band drives the wheels. A motor mount is fitted with M3 countersunk screws. To fit all the required electronics, an alternative version of this module can be used. * The user interface for your phone or tablet is stored in the sketch. Any ios or android device receives the interface from the Arduino. The RC-control Arduino Nano is configured for control by the RemoteXY app. Project: http://remotexy.com/en/editor/e54607139e8f8d00a5178e465b460758/ This app is free to use for up to 5 elements. I've configured 5 elements. My sketch provides the motor drive, horn control and lighting. The motors can be driven by an ESC (PWM-servo signal) and with an H-bridge. Another Arduino Nano runs the sound module. It is based on this project for ship engine sounds: https://www.youtube.com/watch?v=D-_IvxzKwkg In the sketch comments, the pin-setup is described. A PWM-servo input reproduces the engine sound for the set speed. The other PWM-servo input controls the sound of the horn. Currently 3 engine sounds are available. Please feel free to modify or add your own sounds (and share the results). I'd like to combine both sketches into one Arduino Nano, eliminating the need for two separate boards. My programming skills were not sufficient to achieve this, so I'm counting on your help. Best regards, Rob 08DEC2019: After successfully using gears to drive the wheels (https://www.thingiverse.com/thing:3488817), I decided to update the drive of the KÖF-II as well. All parts for the gear driven undercarriage contain the word "tandwiel". For smooth running, six bearings 8.0 x 3.0 mm, 4.0 mm i.d. are used. 19MAR2020: I added a "Deutz" sign on the radiator and the build number sign.