The encoder wheel doesn’t fit.

I was able to attach the wheel encoder but the wheel won't fit unless I loosen a screw on the motor. Make sure to add the motor spacers between the aluminum motor mount and the bottom plate!I recently added video explains how to do the installation (and use the beam break sensors): https://youtu.be/bxay-j6cVHU.

Want to add some of those kit-of-parts electronics to your Elegoo but have no idea where to connect what?

Start with this introduction to the Arduino Uno Pinout: https://www.circuito.io/blog/arduino-uno-pinout/ Additional Hints: "Pinout" means the mapping of physical pins to internal microcontroller functionality. Many pins can do more than one thing. None of them can do everything. The I/O expansion board in your kit will give you 8 more inputs/outputs. It connects to the Arduino … Continue reading Want to add some of those kit-of-parts electronics to your Elegoo but have no idea where to connect what?