These are the smallest and lightest motor controllers currently manufactured for RC hobby robotics. They take up very little space but can handle more than enough current for small robots.

"w/ BEC" indicates an included Battery Eliminator Circuit. If there is no 5V supply present on the robot, use one of these to power the radio receiver from the main battery.

Battery Voltage: 7V - 36V
Battery Eliminator Output Voltage: 5V
Battery Eliminator Output Current: 100mA (can run other electronics like a receiver and other esc's, but not motors or servos)

Continuous Current: 2.0A continuous
Max Current: 2.8A peak

Circuit board size: 1.27x1.27x0.58cm (0.5x0.5x0.23”)
Outer heatshrink size: 1.35x1.91x0.64cm (0.53x0.75x0.25”)
Weight with wires: 4grams (0.14oz)

Ultra-compact and lightweight.
Undervoltage, overcurrent/temp protection.
Internal BEC provides 5V to receiver. Use this ESC if you do not have another speed controller or voltage regulator providing 5V power to your receiver.

Currently out of stock.  Expected late-August.