this post was submitted on 25 Jun 2025
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Solarpunk technology
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Technology for a Solar-Punk future.
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BLDC motors, also called brushless, is the silent geeky revolution that brought us lighter, cheaper and more efficient robotics. It also allowed to make battery-powered electric version of many gardening equipment. More precisely, it is the design of cheap lighter controllers that made all of this possible (a good controller will require a fast-ish microcontroller on board)
Kind of a niche subject but happy to see it here!
The energy efficiency difference is insane - 8W vs 53.8W at no load means BLDC motors use about 85% less power just to spin, which is why my electic bike can go so far on a single charge.
DC motors will tend to be optimal only at a set speed/torque whereas BLDC motors do need a microcontroller to be driven, but are able to optimize the flow in a much wider range. Coils in a DC motor are basically ON or OFF whereas they can ramp up in a BLDC depending on the speed.