Open Source Sensorless BLDC Motor Controller Now on Kickstarter - Open Electronics - Open Electronics
60/120degree Sensor/Sensorless Universal 48V 60V 500W Brushless DC Motor Controller/Electric Bike Speed Controller,
Motor Notes : Features and Selective Use of Sensored and Sensorless Driving of Brushless Motors | Motor Notes : Evolution and Kinds of Motors | TechWeb
JUYI 110V/220V Sensorless Brushless Motor Controller , 3 Phase Bldc Motor Driver Board with High Power