This computer shoved in the engine compartment controls just about every aspect of your car’s performance, from the air/fuel ratio ... he’s building his own ECU using the STM32F4 Discovery ...

There was a problem though; solid rocket motors are far too common to be interesting, and even hybrid rocket engines are becoming passé. We’ve never seen a liquid-fuel rocket build before ...

If you love the sounds and smells of an internal combustion engine but don't want ... ventilated if the engine you're building is designed to run on liquid fuel (you won't want exhaust gases ...