Blog
Notes from the bench.
Explainers and how-tos on drones, robotics and embedded hardware: how the pieces work, and how to put them together.
Designing a drone powertrain: motor, propeller and battery
A walk through sizing the propeller, motor KV, battery and cell count for a multirotor, the physics behind each choice and the constraints that end up deciding the design, with live calculator examples.
Flight controller vs. companion computer: who does what on a drone
Why most capable drones carry two computers, what each one is responsible for, and how they talk to each other over MAVLink.