This is another version of Hungry Robot (coin bank robot) which I built in 2018. You can make this robot without 3d printer. All you need to do is just buying a can of Pringles, a servo motor, a proximity sensor, an arduino and some of tools. You can download all the files from the drawing to the source code for it. This robot eats coins!! If you have any questions, please leave comment and I will reply as soon as possible.
How to make humanoid robot using Arduino and 3D printer. Arduino Humanoid Robot Tutorial. You can download all the code and 3d files for your example. You can apply this project for your purpose. All the links are on the each video descriptions.
I really love to make use-for-nothing robots such as Drinky (Drinking buddy robot). I want to make a robot for emotional purpose not for functional. This is fun, makes smile and feels good. This robot is also one of useless robot but, I'd like to make a funny robot! There are many coin-eating robots (Robie). I'm going to make it by using 3d printer and an Arduino. All source code and 3d printing modeling files are opensource. Feel free to make it by yourselves.