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The YRRC 30A ESC is mainly used for RC drone FPV racing. The page explains that BLHeli is an ESC firmware and BLHeli_S is its second generation.
The title says 30A, but the specification list gives a continuous current of 25A and a burst current of 30A (5S), so use the 25A continuous figure when you size your power system. The power supply is 2-4S (7.4-16.8V) and the page lists programmable PWM up to 48 kHz and auto-timing. The page showed 44 units in stock at Rs 879 (SKU RS4821).
BLHeli_S firmware: the second generation of BLHeli.
DShot600 support: as named in the title.
2-4S (7.4-16.8V): power supply.
Programmable PWM up to 48 kHz: as listed.
Auto-timing: for higher efficiency and reliability.
OPTO design: as named in the title.
An electronic speed controller (ESC) converts the throttle signal from the flight controller into the three-phase power that a brushless motor needs. It switches battery current through MOSFETs at high speed, so the motor turns at the speed that the pilot or autopilot asks for. The continuous current rating shows how much current the ESC can carry all the time, and the burst rating shows what it can survive for a few seconds.
Match the ESC to the rest of the power system. The battery cell count must fall inside the listed range, the continuous current must be higher than what your motor and propeller draw at full throttle, and the signal protocol (for example PWM, Oneshot, Multishot or DShot) must be supported by your flight controller. An ESC marked OPTO has no built-in BEC, so the receiver and flight controller need power from another source. An ESC with a BEC can supply a regulated voltage, usually 5V, to small electronics.
Install and test carefully. Solder joints must be clean and strong, the motor wires should be kept short and tidy, and the ESC needs airflow because current makes heat. Calibrate the throttle range if the ESC needs it, check the motor direction with the propellers removed, and never connect a battery with the propellers fitted while you are working on the wiring. Use a battery with a cell count and connector that suit the ESC, and check for a heat problem after a short test hover.
FPV racing
2-4S quads
BLHeli_S setups
Compact builds
DShot600 builds
The continuous current is 25A and the burst is 30A (5S), even though the title says 30A. The ESC is OPTO, so it has no BEC.
Use DShot600 if your flight controller supports it.
Power supply: 2-4S (7.4-16.8V)
Continuous current: 25A
Burst current: 30A (5S)
Firmware: BLHeli_S
Protocol: DShot600
PWM frequency: programmable up to 48 kHz
1 x YRRC 30A 2-4S BLHeli_S DShot600 ESC
Racing builders who need an affordable 2-4S BLHeli_S ESC.
25A, with a 30A burst, even though the title says 30A.
2-4S (7.4-16.8V).
BLHeli_S.
DShot600.
| Brand | YRRC |
|---|---|
| Continuous Current | 25.000000 A |
| Firmware | BLHeli_S DSHOT600 |
| Power Supply | 2-4S (7.4-16.8V) |
| Selling unit | PCS |
