# Design Demo > This is a Powerpoint presentation of the mechanical and electrical design and assembly work I did during the first half of the course to **design and manufacture a brushless DC motor from scratch**. This design incorporated validation methods such as physical test-model verification and virtual simulation using software like [FEMM](http://www.femm.info/wiki/HomePage) and [SimulationX](https://www.simulationx.com/simulation-software.html). Since we also needed to assemble this motor by hand we incorporated **DFA** and **DFM** principles to push more ambitious goals. > As of mid-term demo day, March 2nd, we had demonstrated variable speed spinning under loaded and unloaded conditions with early iterations of a driver circuit and controls algorithm. ![](https://867149615-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M4AszZ6cDemtjRDbZfx%2F-M4AuQWVgou7wc3lblel%2F-M4B1YnCSi-FGae_mFhC%2Fexploded.png?alt=media\&token=193f81f7-b97a-494f-9947-32a5a1e9176f) {% file src="" %} Custom BLDC Motor {% endfile %} ## Single Phase Characteristics * At 12V current draw is 1.26A (we would expect this to decrease when motor is in motion) * At 15V current draw is 1.46A * At 17V the motor starts to bind (plastic bends st rotor contacts stator)