With the insight offered from the Great Glue Gun, Ben knuckles down to redesigning a 3D printed mount for the motor using Autodesk Fusion 360, but it makes sense to check these things before dedicating ourselves to a 3D print, so Ben laser cuts a paper pattern first to see if it’ll fit. It’s not all about physical design though, it’s time to start programming the ATTiny microcontrollers with AtmelStudio and C++ and thanks to a bit of Boolean logic and binary arithmetic, Ben can control the motor with a technique called ‘pulse width modulation’ or PWM! Make sure you follow along with the build on the element14 Community and chip in with your ideas!