The BLHeli and SimonK SN series ESCs from DYS have been especially designed for the best performance in multirotor aircraft by having very low-weight, fast throttle response and diminutive dimensions! The 16 and 20A versions below weigh just 4.5g a piece, which can be further reduced by removing the heatshrink. The speed controllers below are all OPTO type, so will not provide power to your receiver or flight controller. The 16-20A ESC supports 2-4s Li-Poly batteries and the 30A supports 2-6s. The low weight, tiny form-factor and superb price point coupled with the fact that you have OneShot and active braking support means these offer superb value for FPV racing quadcopters!
For more information about BLHeli, please refer to the following link: BLHeliSuite.
The ESCs below are Atmel based. When using BLHeliSuite with the optional DYS USB Linker, please choose the Atmel SK Bootloader (ArduinoUSBLinker) in the interface menu of BLHeliSuite.

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