BL-Ctrl V3.0 2XL(MikroKopter brushless motor speed controller)

BL-Ctrl V3.0 2XL(MikroKopter brushless motor speed controller)

Price: 59,00€

Price without tax: 48,76€
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  • Model: BLCTRL32XL (41450)

Extremely fast brushless controller version V3.0 for MikroKopter

The board is tested and programmed (including the bootloader)

The new BL-Ctrl v3.0 can even be used by people flying with low end flight stabilization systems foreseen to drive speed controllers produced in the model/toy world, working only on PPM/PWM. Even for these non-professional systems, the BL-Ctrl v3.0 will improve the flight stability and power consumption. There is nothing to configure in order to used the BL-Ctrl v3.0 in PPM mode. You just need to connect the board with the servo outputs coming from the 3rd party PPM flight stabilization system.

This controller performs perfectly with our AltiGator and OnyxStar motors.

Technical specifications


  • Operating voltage: 10 to 30V -> from 3S to 7S Lipo
  • 6-layer PCB for optimal heat dissipation . Thanks to 70u copper layers the entire circuit board acts like a heat sink .
  • Current: up to 60A with appropriate cooling
  • Current limiting and temperature limiting
  • Active freewheeling -> less power loss

Fast response with speed control:

  • Rapid acceleration and braking of the propeller. Active and seamless braking gives the speed precisely and quickly on the new setpoint .
  • Return energy to the lipo when braking. Seamless transition from acceleration to braking
  • Significantly faster control with speed control
  • Video

Other Features:

  • Adjustable motor timing in several steps of 13-28° - compatible with the most common BL motors
  • Adjustable switching frequency (10kHz - 20kHz )
  • PPM to 500 Hz with simultaneous I2C - bus operation for telemetry and data logging
  • Integrated 12V stabilization for LED lighting and other 12V appliances
  • Switchable outputs for lighting -> Like for the blinking LEDs at low voltage
  • Software adjustable direction of rotation
  • Adjustable current and temperature limits
  • Adjustable start-PWM
  • Silent Start: test tone at startup can be disabled
  • The I²C bus is protected/isolated by an optocoupler. This allows the use of longer I²C cables and it is therefore possible to install the speed controllers under the motors for instance.


  • Multiple interfaces for input (I2C, PPM [500Hz] , serial)
  • Integrated current measurement measurement of the actual current and the used capacity on the Mikrokopter control
  • Voltage and temperature measurement with data transmission to the ground station and data logging
  • 11-bit resolution (2048 steps )
  • Various feedback to the MikroKopter-FlightCtrl (blocked motor , power limiting , etc. )
  • Extended configuration options (eg current limit , temperature limit , ...)
  • Two status LEDs (OK and Error )
  • Addressing by jumper addresses (from 1 to 8)
  • I2C bus access possible in PPM mode - for data logging and telemetry in PPM mode
  • Status messages are transmitted to the FC (engine blocks , Current, Self-test error ...)
  • Current measurement up to 75A per controller
  • Convenient configuration of the BL controller via the Flight-Ctrl


  • Hole: 3mm
  • Weight (approx.): 15.7 gr
  • Dimensions (W x H): approx 75mm x 26mm (without capacitors)
  • Dimensions (W x H): approx 96mm x 26mm (with capacitors)

Scope of delivery

  • 1 SMD pre-assembled, programmed and tested board



  • The BL-Ctrl 3.0 controller is specifically designed and optimized for MikroKopter motors. For maximum stability of the MikroKopter setpoints are set almost instantaneously on the motor. If other motors (especially larger power classes) are used with this controller, this fast change of setpoints can easily lead to very high peak currents, which bring the BL-Ctrl control to the limit or an overload. This is no fault of BL-Ctrl3.0 controller, but a systemic property. Please consider carefully whether a different motor is suitable.

See also

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