SkyStars KM50A Pro 3-6S BLHeli_32 4-In-1 ESC



  • Unleash the power of your drone with the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC – an exceptional electronic speed controller
  • Offering high performance, reliability, and advanced features.

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SkyStars KM50A Pro 3-6S BLHeli_32 4-In-1 ESC Features and Specifications:

At The FPV Project, we take great pride in providing high-quality components and equipment for the drone community.

Welcome to our comprehensive guide on the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC, the ultimate choice for maximizing the performance of your drone. In this article, we delve into the key features, advantages, and applications of this remarkable electronic speed controller (ESC). Whether you are a professional drone racer or an avid aerial photographer, the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC is designed to take your drone’s capabilities to new heights.

Understanding the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC

The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC is a cutting-edge electronic speed controller specifically engineered for multirotor drones. It offers exceptional performance and reliability, making it an ideal choice for drone enthusiasts and professionals alike. Here are some key features that set the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC apart:

1. High Power and Efficiency

The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC delivers impressive power and efficiency, allowing your drone to soar through the skies with ease. With its advanced circuitry and optimized firmware, this ESC can handle voltage inputs ranging from 3 to 6S, providing ample power to meet the demands of even the most demanding flight maneuvers.

2. BLHeli_32 Firmware

Equipped with the BLHeli_32 firmware, the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC offers unparalleled control and customization options. This firmware allows for smooth and precise throttle response, improved motor braking, and extensive parameter adjustment capabilities. Whether you prefer a more aggressive racing setup or a stable aerial photography configuration, the BLHeli_32 firmware empowers you to fine-tune your drone’s performance to suit your specific needs.

3. Advanced ESC Protection Mechanisms

The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC is equipped with a range of advanced protection mechanisms to safeguard your drone’s components and ensure a reliable flight experience. Some notable protection features include:

  • Overcurrent Protection: Detects excessive current draw and automatically reduces power to prevent damage to the ESC and other components.
  • Thermal Protection: Monitors the ESC’s temperature and reduces power output if it exceeds safe limits, preventing overheating and potential system failures.
  • Signal Loss Protection: In the event of a signal loss between the flight controller and the ESC, this feature engages a failsafe mechanism, safely bringing your drone back to the ground.

Applications and Performance

The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC excels in various applications, offering unmatched performance and reliability. Let’s explore some of its key applications:

1. Drone Racing

Drone racing is an exhilarating sport that demands speed, agility, and precise control. With the SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC, you can unleash the full potential of your racing drone. Its high power output and responsive throttle control enable lightning-fast acceleration, rapid cornering, and smooth flight maneuvers. Gain a competitive edge on the racetrack with this exceptional ESC.

2. Aerial Photography and Videography

For professional photographers and videographers, capturing stunning aerial shots is essential. The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC offers exceptional stability and responsiveness, ensuring your drone stays steady even in challenging conditions. With precise control over motor speed and braking, you can capture cinematic shots with breathtaking precision and smoothness.


The SkyStars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC brings tons of great features all in a 30.5×30.5mm mounting pattern. The KM50 Pro ESC comes with vibration isolation rubbers to prevent cracks during a crash, comes with large motor pads for easy soldering, and uses aluminum alloy for the heatsink, among other features. Supports Dshot 600/1200 and voltage, RPMS & current telemetry functions. Combined with Blheli_32  firmware to make a smooth ESC.


  • Flashed with the latest Blheli_32 firmware 
  • Highly Efficient ( Low Specific Heat Capacity ) heatsink for better cooling
  • Use of Aluminum alloy for heatsink 
  • Imported The United States MOSFET
  • Panasonic ZLH Ultra-Low ESR Capacitor
  • PCB uses 3oz Copper which reduces heat and increases system efficiency
  • Large motor pads for easy soldering
  • Support telemetry functions ( Voltage ,RPMS & Current )
  • Inbuild overcurrent protection 
  • Vibration isolation rubber to prevent cracks during a crash 
  • Supports custom ESC startup tone


  • Input voltage : 3-6S LiPo / LiHV
  • Firmware: Blheli_32
  • Continuous Current : 50A
  • Peak Current: 60A (10S)
  • Overcurrent Protection: Yes
  • ESC Protocol: Dshot 600/1200
  • Mounting Hole Pattern : 30.5mm / M3
  • BEC: NO
  • Product size: 41*46*7.6mm
  • Weight: 17g


  • 1 x Skystars KM50A Pro 3-6S BLHeli_32 4-in-1 ESC
  • 1 x 35v 560uf Capacitor
  • 1 x Wiring harness
  • 4 x Damping Rubbers

Alright, let’s dive into the world of PID loop frequencies! 🏊‍♂️🌊

So, imagine you’re playing a really immersive video game. 🎮 You press a button on your controller, and your character responds instantly on the screen, right? Now imagine if there was a delay between your button press and the character’s action. That would be a bummer, wouldn’t it? 😕

Well, in the world of drones, we have a similar situation. The drone’s flight controller is constantly making adjustments to keep the drone flying smoothly. This happens through something called the PID loop, which stands for the Proportional, Integral, and Derivative loop. 🔄🚁

The PID loop is like the brain of the drone. It takes information from the sensors, decides how the drone should respond, and then sends commands to the motors. This entire process happens repeatedly and at a very fast pace. The frequency at which this process repeats is known as the PID loop frequency. It’s like the frame rate in a video game – the higher the frame rate, the smoother the game looks. 🧠🔄

Now, when we talk about 2K, 4K, and 8K PID loop frequencies, we’re talking about how many times per second this process happens. So, 2K means the PID loop runs 2000 times per second, 4K means it runs 4000 times per second, and 8K means it runs 8000 times per second. It’s like choosing between running, cycling, or driving – each one is faster than the last! 🏃‍♂️🚴‍♂️🏎️

So, you might be thinking, “Well, obviously 8K is the best because it’s the fastest, right?” Not necessarily! Just like driving a car super fast isn’t always the best option (you could get a ticket or crash 😱), running your PID loop at super high frequencies isn’t always the best choice.

For one, it can make your flight controller work harder, which can lead to overheating. It can also make your ESC protocol more prone to errors, kind of like how a fast internet connection can sometimes be unstable. 🌡️🔥

So, it’s all about finding the right balance. Just like how you wouldn’t use a race car to go to the grocery store, you wouldn’t necessarily use an 8K PID loop frequency for a casual drone flight. It all depends on what you’re using your drone for. 🚁😉

I hope this helps to understand what PID loop frequencies are all about! If you have any more questions, feel free to ask. Happy droning! 🚁🎮🌤️

Read More About Lipo Batteries by clicking the link below:

Checkout our Frames Collection by clicking the link below:

1S = 1 cell  = 3.7V
2S = 2 cells = 7.4V
3S = 3 cells = 11.1V
4S = 4 cells = 14.8V
5S = 5 cells = 18.5V
6S = 6 cells = 22.2V

For example, we call a 14.8V battery a “4-cell” or “4S” battery.

LiPo battery is designed to operate within a safe voltage range, from 3V to 4.2V. Discharging below 3V could cause irreversible performance loss and even damage to the battery. Overcharging above 4.2V could be dangerous and eventually cause a fire.

However, it’s advisable to stop discharging when it reaches 3.5V for battery health reasons. For example for a 3S Lipo, the max voltage is 12.6V, and you should land when the voltage reaches 10.5V (at 3.5V per cell).

Weight 0.2 kg
Dimensions 18 × 10 × 10 cm


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