System Requirements: Compatible with Windows 2000, XP, Vista, Windows 7, Windows 8.1, Windows 10, and Windows 11. Compatible with Apple® systems, through use of emulation software such as Boot Camp and Parallels® Desktop 13.

Instruction Manual: KDE Direct UVC ESC Series Instruction Manual REVPR13 (PDF)

PC Software Download: KDE Direct Device Manager V1.39.1 (ZIP)

ESC Firmware Downloads:

Release Notes:

B460256

• Fixed an issue where the 5215-220 motor wouldn't reach full speed unloaded on 12S

D460348

• Improved synchronization when the 5215-220 motor is selected
• A slower starting acceleration is applied if the 7215 motor is selected

D460347

• ESC will now turn off the High Side Fets in the standby state
• Added error handling to ADC conversion
• Reduced timeout when writing to I2C for data log
• Fixed a timing issue where some motors would run hot without load

D460346

• Changed NART in CAN_MCR in DroneCAN init (messages should now re-transmit if a CAN message loses arbitration)
• Propeller hold now deactivates when the throttle is greater than the brake pulse

D460345

• Added ability to read all EEPROM from File -> Read All EEPROM. Clearing ESC Log sets the address to 0
• Added Startup Power setting Very Low
• Fixed checksum when transmitting data with PC software
• Added advance timing balanced (8°) to Custom Motor Edition. This works well with shaft drive motors and EDF motors

D460344

• Added Current ADC Gain and Offset scaling for data log and CAN bus current output
• Fixed a bug where overload protection would activate immediately instead of taking 3 seconds
• Increased overload protection threshold for the 40UVC

D460343

• Added Custom Motor Edition
• Added Custom Starting and Running Throttle Response when the Custom Motor Edition is selected
• I2C frequency for data logging increased to 400kHz
• I2C mem write now uses Direct Memory Access for Custom Motor Edition
• Custom Motor Edition has additional back EMF filtering

B460255

• Fixed slow start issue when the 5215-220 motor is selected

D460342

• Added Startup Power Low
• Backup throttle now works with DroneCAN

D460341

• Added DroneCAN
• Added KDECAN object addresses 12 and 13
• Fixed bug where the ESC error code was sometimes incorrect

B460254

• The medium acceleration rate setting when the default motor is selected is now slower

D460340

• Increased the accuracy of RPM reporting for data log and CAN bus
• PWM dropout detection now occurs inside interrupts (input capture callback and CAN bus callback)
• Timeout before shutting off power is reduced
• ESC now stops propeller hold if a spinning throttle is sent while it's still activating

D460339

• Fixed synchronization issue when sending 0% throttle at high speed then rapidly increasing throttle
• Back EMF timeout interval reduced to improve motor sync at low speed
• Fixed motor stopping issue when disconnecting and reconnecting the throttle lead (the motor free spools down now)
• Startup acceleration now activates when the input throttle is less than the stopping throttle (helps VTOL setups)
• Lowered 40UVC medium and medium high acceleration rate settings
• Fixed a bug where CAN bus voltage detection was not accurate in the pre-arm state
• Fixed a bug where the ESC would accept throttle values from CAN bus and PWM concurrently (ESC now prioritizes the PWM signal correctly w/ PWM SYNC setting)
• CAN object addresses 32,33,34 are duplicated to 22,23,24 respectively since CAN 2.0A max is 5bit (31)
• 0% throttle is no longer required after arming beeps
• State transition to standby state will not occur at 0% throttle anymore (stopping throttle), transition now occurs when no more back EMF signals are sensed, allowing smoother motor operation

D460338

• Voltage detection scaling adjusted to improve accuracy
• Voltage cutoff mode values adjusted to reduce error

D460337

• Fixed a bug in CAN message 32 (ESC now turns MOSFETS off in the startup state too)
• Propeller hold now has a 0.1 second delay before activating the brake
• Fixed a bug where ADC current sensing wasn't always checked
• Fixed a bug where the final arming tone only beeped once
• OneShot125 is now disabled when Range Calibration is selected
• Removed RPM limit based on motor speed
• Motor startup algorithm is now deterministic

D460336

• Protection bits are now stored in the data log (requires KDE Direct Device Manager V1.38.1 and above)
• Fixed over temperature protection error code incorrect
• Fixed an issue where overload protection wasn't always activating
• IRQ variables are now declared as volatile where needed
• EEPROM I2C frequency is now set to standard mode
• PWM ONLY mode added (CAN bus throttle backup is disabled in this mode)
• Added 6815 motor edition

A460125, B460253

• Added overvoltage protection
• ESC now logs when a protection occurs
• Protections can be read using KDE Direct Device Manager V1.38.0 and above (Options -> Protections)
• OneShot125 detection is now disabled when Range Calibration is selected

D460335

• Acceleration rate improvements when the 6213 or 7215 motor edition is selected
• RPM reported by the ESC for data logging and CAN bus is now more accurate
• Dynamic advance timing now properly matches the interval and frequency used in the HVC series ESCs
• Fixed a can bus issue on message 2 where the ESC wasn't updating the source address

D460334

• Increased acceleration rate when the motor edition is selected
• Improved filtering when the default motor is selected (fixed an issue caused from D460333 release)
• Fixed a timeout issue when dynamic advance timing is selected

B460252

• Added 5215 motor optimizations
• Motor startup for 5215-220 is now much smoother
• KDE Device Manager V1.37.4 and above is required to select new motor editions

D460333

• Adjusted time interval before commutating (changed dynamic advance timing)
• Increased time interval before sensing
• Back EMF debounce filtering changed for 6213, 7215, and 8218 motors
• Fixed issue with the default output frequency not 16khz
• Increased acceleration rates
• The default acceleration rate is now high

D460332

• Fixed an issue that could cause the motor stop caused from rapid deceleration
• Updated CAN bus message Get ESC Info to return the firmware and hardware version

B460251

• Improved synchronization when the 7208-135 motor is selected

A460124, B460250

• Global interrupts are now disabled before reading/writing to EEPROM
• Added error checking when receiving settings from PC software
• Fixed a calibration issue with range that could cause the endpoints to be updated
• The default for stall protection is now disabled

D460331

• Increased acceleration rate for the 40UVC ESC
• Fixed initialize arming tone to only emit final tones
• Fixed propeller hold deadband. Stopping throttle is now different than the propeller hold activation throttle
• Improvements to the advance timing allowing higher rpm with some motors
• Fixed an issue where the can bus interrupt and data log interrupt were both scaling the current
• Motor startup is now slower and ramps the output duty cycle
• A dynamic acceleration rate reduction was added to the motor startup (occurs while the set throttle is less than the running speed on motor start)
• The data log now saves data for two seconds after the motor stops spinning
• The rpm for data logging and can bus is now updated every commutation
• Updated CAN bus HAL driver
• 5215-330 and 5215-435 startup modified

D460330

• Added support for the 40UVC ESC

D460228

• Changed arming behavior. If a spinning throttle is sent while arming, the motor will now spin once the beeping has stopped
• Improved startup when the 7215 motor is selected

A460123

• Settings are no longer reset on watchdog timer interrupt

B460248

• Settings are no longer reset on watchdog timer interrupt
• Optimization of acceleration rate profile when the 7215 or 8218 motor are selected on 12S

D460227

• Adjusted commutation timing to improve motor sync with 8218 motor
• Increased 7215 acceleration rate

D460226

• Fixed a compatibility issue with the 85A ESC
• Optimized motor commutation with the 6213 motor

D460225

• ESC timing improvement, rpm better follows changes in throttle
• Fixed a desync with the 7215 motor on 14S
• Improved general startup when the motor is selected

B460247

• Fixed an issue that caused the ESC to lose its firmware version when read from memory

D460224

• Throttle Control through CAN bus (BETA) can now be enabled in production firmware (KDECAN Control: CAN bus)
• For more information please refer to the KDECAN bus protocol document

D460223

• Fixed motor timing desync with the 10218 motor with the 30.5" dual props on 14S
• Fixed an issue where the default KDECAN baud rate was not set to 1000K baud
• KDECAN Bus Standard Frame Structure CAN 2.0A
• The ESC now auto-detects if a sent CAN message is extended (2.0B) or standard (2.0A) and will respond appropriately
• KDE Device Manager 13218 motor dropdown added for additional optimization
• New version fixes an issue where Propeller Hold would not activate

D460222

• The drive frequency of the motor startup algorithm has been modified for the new 125UVC-HE
• Modified UVC ESC UART Read/Write protocol so that the packet structure is now the same for consistency
• KDE Device Manager V1.36.0 and above is required

D460221

• Better startup and timing for heavy lift motors (allows motors to run better at higher voltages)
• Optimizations for the 13218 motor

B460246

• Fixed an issue with the 6213 motor where the acceleration rate was the same as the default motor

B460245

• The default setting for overload protection is now standard for the 75A and 95A HVC ESCs to increase safety.

D460120

• Optimized startup for the 8218XF-120 motor on 14S
• Temperature protection has been modified to be more gradual before thermal shutdown occurs.

A460122, B460244, C460121

• Throttle Calibration Modes RANGE and MANUAL no longer dynamically scale when receiving throttle above the set maximum.

D460119

• Optimized startup for the KDE5215XF-330 motor
• Increased acceleration rate and improved motor timing for the 7215XF motor
• Added KDECAN bus baud rate

C460120

• When the input throttle is lost or disconnected for more than 2 seconds, upon reconnecting there is now no need to restart from zero throttle

D460118

• Optimized startup for the KDE5215XF-220 motor
• Improved accuracy of current detection and input throttle for data logging and CAN bus
• Fixed warning message incorrect within KDECAN bus message 11

D460117 (KDECAN Release - 125A and 85A ESC)

• Control Signals (Send)
  • Backup Throttle Control (2.5ms refresh-rate controls ~400Hz)
  • Shutdown Procedure (turn off ESC via command)
  • Restart Procedure (re-arm and enable ESC via command)
• Live-Telemetry Feedback Signals (Receive)
  • Drive Voltage (V)
  • Drive Current (A)
  • ESC MCU Temperature (oC)
  • Output Throttle Duty-Cycle (%)
  • Input Throttle Signal (μs)
  • Motor eRPM (rpm)
  • Warning Signals and Errors

A460121

• Added ability to disable Stall Protection algorithms

D460116

• Improved startup for the KDE5215XF motor series
• Optimized motor control algorithm for the KDE7208XF and KDE7215XF motor series
• Added new ADAPTER pull-down offering better performance for specific setups

C460119

• Added ability to disable Stall Protection algorithms

B460243

• Additional smoothing added for the KDE6213XF motor
• Added new ADAPTER pull-down offering better performance for specific setups

D460115

• Additional optimizations for the KDE10218XF motor
• Additional optimizations for the KDE8218XF motor

D460114

• This new firmware update requires the new KDE Device Manager V1.32 software or above
• Added KDE Device Manager data graphing advanced features including zoom, pan, display options, changeable units, printing, and saving
• Added data logging with Drive Voltage, Drive Current, Temperature, Motor Drive Power, Input Throttle, Output Throttle, RPM, and Power Consumption
  • Note: data log speed can be specified from the drop down located on the main window in the KDE Device Manager
  • Note: after a flight, logged data can be exported from File->Export ESC Datalog in the KDE Device Manager
• Added data logging support for multiple flights
• Added ability to import or export a data log
• Added support for the KDE-UAS85UVC Series (firmware version D460114 is compatible with all ESC's in the UVC series)
• Added new ability to record how long you've used your ESC
  • Note: the ESC use time can be found under Options->ESC Use Time in the KDE Device Manager

D460109

• Added production firmware release for new KDE-UAS125UVC ESC series

B460242

• Optimized the startup for the KDE6213XF motor

A460120, B460241, C460118

• Added new OVERLOAD PROTECTION feature for enhanced ESC protection and safety
  • Note: selection menu is available only on the latest production KDEXF-UAS75HVC/95HVC
• Added new Stall Protection algorithms for motor stall detection during startup and in-operation
• Reduced motor shutdown time to ~200ms upon loss of control signal (failsafe protection)

A460118, B460131

• Added new PRECISION (30kHz - 32kHz) drive frequency option for smooth motor operation
• Further optimized ACCELERATION RATE defaults for each MOTOR EDITION

A460117, B460128, C460116

• Added OneShot125 and PWMSync500 auto-detection algorithms to all UAS ESC editions
• Improved shoot-through protection and synchronous rectification (S.R.) timings
• Increased maximum commutation to 360,000 eRPM (2-Pole)
• Added new INITIALIZE arming tone function
• Additional optimizations incorporated for each MOTOR EDITION
• Added new ACCELERATION RATE pull-down menu for flight-style control
  • Ability to change flight behavior for various UAS applications and pilot preference
  • Defaults optimized for each MOTOR EDITION

A460115, B460123, C460114

• Optimized synchronous rectification logic for improved smoothness
• Added new KDE7215XF-COAX motor edition
• Corrected safety-arming tones for improved operator notification
• Improved low-speed performance and startup algorithm