Battery Box - Button and Timer for Marble Run Kit

Problem:Everybody knows the great Bambulab Marble Run, but you need everytime an external USB source.My Son uses an power-bank for it, but he never turn it off! 🤣click...clack...doing...boing...🥴 Solution:I created a perfect fit Box to the Marble Run for a Ø14 battery pack with charging port and include a button with a timer module. What you need:Li-Ionen Akkupack 14430/14500 3,7v battery pack: Something like https://amzn.to/3vp9tJK or https://amzn.to/4aLfIreUSB-C Charging Module https://amzn.to/47JILJtAT41 Timer Module https://a.aliexpress.com/_EGpWUWtPush Button https://amzn.to/3MUYYnsAlternative you could use a self locking Push Button without the timer module. https://amzn.to/3MUapvBSome cables and a soldering iron Assembly:Cut the motor cable around 150mm.Solder as shown in the schematic below. Cables with 50mm length are enough.Think about the button, cables has to go through the inlet on the housing. Insert all components into the housing. Begin with the button, timer, battery