23 % தள்ளுபடி
Emax BLHeli Series 30A ESC with Oneshot (Original)
The Emax BLHeli Series 30A ESC with Oneshot is a high-performance electronic speed controller designed for brushless DC motors in racing drones, FPV quadcopters, and high-speed aerial platforms. Professional drone pilots and FPV racing enthusiasts rely on this ESC for its ultra-responsive Oneshot protocol, which delivers 125Hz signal processing for lightning-fast motor response and reduced latency. This controller solves the critical challenge of achieving millisecond-level throttle response and smooth power delivery in competitive drone racing where split-second control inputs determine race outcomes.
Product Overview
The Emax BLHeli Series 30A ESC represents the pinnacle of speed controller engineering for FPV and racing drone applications. Built on the BLHeli firmware platform, this ESC features a robust 30-ampere continuous current rating with peak burst capability, making it suitable for 3S to 4S LiPo battery configurations with high-KV brushless motors. The Oneshot protocol implementation allows the ESC to accept throttle commands at 125Hz update frequency, compared to standard 50Hz PWM protocols, resulting in dramatically improved responsiveness and control precision. The controller incorporates advanced current limiting, temperature monitoring, and soft-start algorithms to protect both the ESC and connected motor from damage during aggressive flight maneuvers.
What distinguishes the BLHeli Series 30A is its optimized power stage design with low-resistance MOSFETs and efficient gate drive circuitry that minimizes heat generation during sustained high-current operations. The firmware supports multiple input protocols including standard PWM, OneShot, and MultiShot, providing compatibility with various flight controller boards and receiver types. Integrated low-voltage cutoff protection prevents battery over-discharge, while the programmable throttle range allows fine-tuning for specific motor and battery combinations. The original Emax design ensures consistent performance characteristics and reliability that competitive pilots depend on for tournament-level racing.
Key Specifications
| Specification | Details |
| Product Type | Electronic Speed Controller (ESC) for Brushless Motors |
| Brand | Emax |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Continuous Current Rating | 30 Amperes |
| Peak Burst Current | 40 Amperes |
| Input Voltage Range | 3S to 4S LiPo (9.6V to 16.8V) |
| Signal Protocol | Oneshot, MultiShot, Standard PWM |
| Update Frequency | 125Hz (Oneshot Mode) |
| Firmware | BLHeli (Programmable) |
Key Features
- Oneshot Protocol Support: 125Hz signal processing delivers ultra-responsive throttle control with minimal latency, critical for competitive FPV racing and aggressive drone maneuvers
- 30A Continuous Rating with 40A Peak: Handles high-power brushless motors efficiently while maintaining thermal stability during sustained racing operations
- BLHeli Firmware: Open-source programmable firmware allows customization of timing, throttle curves, and protection parameters for optimized performance with specific motor and battery combinations
- Advanced Protection Circuitry: Integrated low-voltage cutoff, over-temperature shutdown, and current limiting protect both ESC and motor from damage during extreme flight conditions
- Multi-Protocol Compatibility: Supports Oneshot, MultiShot, and standard PWM input protocols for seamless integration with various flight controllers and receiver types
- Efficient Power Stage: Low-resistance MOSFET design and optimized gate drive circuitry minimize heat generation and power losses during high-current operations
Applications and Use Cases
- FPV Racing Drones: Oneshot protocol delivers the millisecond-level response required for competitive racing where throttle precision directly impacts lap times and race outcomes
- Acrobatic Quadcopters: High-frequency signal processing enables smooth, responsive control for 3D flips, rolls, and aggressive aerial maneuvers with minimal delay
- High-Speed Freestyle Flying: Supports dynamic power delivery for fast-paced freestyle drone cinematography and complex trick sequences requiring instant motor response
- Brushless Motor Testing: Programmable firmware and multi-protocol support make this ESC ideal for motor characterization, performance testing, and development of brushless motor systems
- Custom Drone Builds: Flexible input protocols and firmware customization allow integration into custom racing platforms and specialized aerial applications
How to Use
To set up the Emax BLHeli Series 30A ESC, begin by soldering the three motor phase wires to the ESC output terminals, ensuring secure connections with proper wire gauge matching the 30A rating. Connect the battery positive and negative leads to the ESC power input, and connect the signal wire from your flight controller to the ESC signal input pin. Before powering on, program the ESC using a compatible programmer or through your flight controller if it supports ESC configuration via software. Configure the input protocol to Oneshot mode in your flight controller settings, set the throttle range calibration by arming without propellers and adjusting throttle endpoints, then perform a test run at low throttle to verify smooth motor spin and correct rotation direction.
For optimal performance, calibrate the low-voltage cutoff threshold based on your battery cell count (typically 3.0V per cell for LiPo), program the timing advance appropriate for your motor type (lower timing for high-KV motors, higher timing for lower-KV motors), and enable current limiting if your flight controller supports it. Mount the ESC away from high-temperature components and ensure adequate airflow for heat dissipation during extended racing sessions. Regularly inspect solder joints and wire connections for any signs of corrosion or loose contacts that could affect performance. Update to the latest BLHeli firmware version periodically to access performance improvements and bug fixes released by the development community.
Frequently Asked Questions
What is the Oneshot protocol and how does it improve drone performance?
Oneshot is a signal protocol that allows ESCs to accept throttle commands at 125Hz frequency instead of the standard 50Hz PWM rate. This means your flight controller can send 2.5 times more control updates per second, resulting in dramatically faster motor response to stick inputs. In FPV racing, this translates to sharper turns, quicker acceleration out of corners, and more precise control during high-speed maneuvers. The reduced latency between control input and motor response is critical for competitive racing where milliseconds determine race winners.
Can I use this ESC with 6S LiPo batteries?
No, the Emax BLHeli Series 30A ESC is rated for 3S to 4S LiPo batteries only (9.6V to 16.8V maximum). Using 6S batteries would exceed the voltage rating and damage the ESC components. For 6S applications, you would need a higher-voltage rated ESC such as the Emax BLHeli Series 40A or 50A models designed for 6S operation. Always verify your battery configuration matches the ESC voltage specification before connecting power.
How do I program the BLHeli firmware on this ESC?
The Emax BLHeli Series 30A ESC can be programmed using a dedicated ESC programmer connected to the programming pads on the board, or through your flight controller if it has ESC programming capability via software. Download the latest BLHeli firmware from the official BLHeli GitHub repository, connect your programmer to the ESC, and use BLHeliSuite software to flash the firmware and adjust parameters like timing, throttle range, and protection thresholds. If using flight controller programming, access the ESC settings through your controller's configuration software and make adjustments without additional hardware.
What motor KV range is compatible with this ESC?
The Emax BLHeli Series 30A ESC works with brushless motors across a wide KV range, typically from 1000KV to 4000KV depending on your battery configuration and desired performance. For 3S batteries, higher-KV motors (2500KV-4000KV) are common for racing drones, while 4S batteries pair well with lower-KV motors (1500KV-2500KV) for increased torque. The BLHeli firmware allows you to adjust timing parameters to optimize performance for your specific motor, so compatibility is flexible. Consult your motor specifications and flight controller documentation for recommended KV ratings.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Emax BLHeli Series 30A ESC with Oneshot (Original) Online in India
Purchase the Emax BLHeli Series 30A ESC with Oneshot (Original) online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Emax BLHeli Series 30A ESC with Oneshot (Original) with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion
Emax BLHeli Series 30A ESC with Oneshot (Original)
The Emax BLHeli Series 30A ESC with Oneshot is a high-performance electronic speed controller designed for brushless DC motors in racing drones, FPV quadcopters, and high-speed aerial platforms. Professional drone pilots and FPV racing enthusiasts rely on this ESC for its ultra-responsive Oneshot protocol, which delivers 125Hz signal processing for lightning-fast motor response and reduced latency. This controller solves the critical challenge of achieving millisecond-level throttle response and smooth power delivery in competitive drone racing where split-second control inputs determine race outcomes.
Product Overview
The Emax BLHeli Series 30A ESC represents the pinnacle of speed controller engineering for FPV and racing drone applications. Built on the BLHeli firmware platform, this ESC features a robust 30-ampere continuous current rating with peak burst capability, making it suitable for 3S to 4S LiPo battery configurations with high-KV brushless motors. The Oneshot protocol implementation allows the ESC to accept throttle commands at 125Hz update frequency, compared to standard 50Hz PWM protocols, resulting in dramatically improved responsiveness and control precision. The controller incorporates advanced current limiting, temperature monitoring, and soft-start algorithms to protect both the ESC and connected motor from damage during aggressive flight maneuvers.
What distinguishes the BLHeli Series 30A is its optimized power stage design with low-resistance MOSFETs and efficient gate drive circuitry that minimizes heat generation during sustained high-current operations. The firmware supports multiple input protocols including standard PWM, OneShot, and MultiShot, providing compatibility with various flight controller boards and receiver types. Integrated low-voltage cutoff protection prevents battery over-discharge, while the programmable throttle range allows fine-tuning for specific motor and battery combinations. The original Emax design ensures consistent performance characteristics and reliability that competitive pilots depend on for tournament-level racing.
Key Specifications
| Specification | Details |
| Product Type | Electronic Speed Controller (ESC) for Brushless Motors |
| Brand | Emax |
| Origin | Original/Authentic |
| Warranty | 7 days on manufacturing defects |
| Shipping | 1-5 days from Bengaluru |
| Delivery | 7-8 days across India |
| Support | 24/7 via Email and WhatsApp |
| Continuous Current Rating | 30 Amperes |
| Peak Burst Current | 40 Amperes |
| Input Voltage Range | 3S to 4S LiPo (9.6V to 16.8V) |
| Signal Protocol | Oneshot, MultiShot, Standard PWM |
| Update Frequency | 125Hz (Oneshot Mode) |
| Firmware | BLHeli (Programmable) |
Key Features
- Oneshot Protocol Support: 125Hz signal processing delivers ultra-responsive throttle control with minimal latency, critical for competitive FPV racing and aggressive drone maneuvers
- 30A Continuous Rating with 40A Peak: Handles high-power brushless motors efficiently while maintaining thermal stability during sustained racing operations
- BLHeli Firmware: Open-source programmable firmware allows customization of timing, throttle curves, and protection parameters for optimized performance with specific motor and battery combinations
- Advanced Protection Circuitry: Integrated low-voltage cutoff, over-temperature shutdown, and current limiting protect both ESC and motor from damage during extreme flight conditions
- Multi-Protocol Compatibility: Supports Oneshot, MultiShot, and standard PWM input protocols for seamless integration with various flight controllers and receiver types
- Efficient Power Stage: Low-resistance MOSFET design and optimized gate drive circuitry minimize heat generation and power losses during high-current operations
Applications and Use Cases
- FPV Racing Drones: Oneshot protocol delivers the millisecond-level response required for competitive racing where throttle precision directly impacts lap times and race outcomes
- Acrobatic Quadcopters: High-frequency signal processing enables smooth, responsive control for 3D flips, rolls, and aggressive aerial maneuvers with minimal delay
- High-Speed Freestyle Flying: Supports dynamic power delivery for fast-paced freestyle drone cinematography and complex trick sequences requiring instant motor response
- Brushless Motor Testing: Programmable firmware and multi-protocol support make this ESC ideal for motor characterization, performance testing, and development of brushless motor systems
- Custom Drone Builds: Flexible input protocols and firmware customization allow integration into custom racing platforms and specialized aerial applications
How to Use
To set up the Emax BLHeli Series 30A ESC, begin by soldering the three motor phase wires to the ESC output terminals, ensuring secure connections with proper wire gauge matching the 30A rating. Connect the battery positive and negative leads to the ESC power input, and connect the signal wire from your flight controller to the ESC signal input pin. Before powering on, program the ESC using a compatible programmer or through your flight controller if it supports ESC configuration via software. Configure the input protocol to Oneshot mode in your flight controller settings, set the throttle range calibration by arming without propellers and adjusting throttle endpoints, then perform a test run at low throttle to verify smooth motor spin and correct rotation direction.
For optimal performance, calibrate the low-voltage cutoff threshold based on your battery cell count (typically 3.0V per cell for LiPo), program the timing advance appropriate for your motor type (lower timing for high-KV motors, higher timing for lower-KV motors), and enable current limiting if your flight controller supports it. Mount the ESC away from high-temperature components and ensure adequate airflow for heat dissipation during extended racing sessions. Regularly inspect solder joints and wire connections for any signs of corrosion or loose contacts that could affect performance. Update to the latest BLHeli firmware version periodically to access performance improvements and bug fixes released by the development community.
Frequently Asked Questions
What is the Oneshot protocol and how does it improve drone performance?
Oneshot is a signal protocol that allows ESCs to accept throttle commands at 125Hz frequency instead of the standard 50Hz PWM rate. This means your flight controller can send 2.5 times more control updates per second, resulting in dramatically faster motor response to stick inputs. In FPV racing, this translates to sharper turns, quicker acceleration out of corners, and more precise control during high-speed maneuvers. The reduced latency between control input and motor response is critical for competitive racing where milliseconds determine race winners.
Can I use this ESC with 6S LiPo batteries?
No, the Emax BLHeli Series 30A ESC is rated for 3S to 4S LiPo batteries only (9.6V to 16.8V maximum). Using 6S batteries would exceed the voltage rating and damage the ESC components. For 6S applications, you would need a higher-voltage rated ESC such as the Emax BLHeli Series 40A or 50A models designed for 6S operation. Always verify your battery configuration matches the ESC voltage specification before connecting power.
How do I program the BLHeli firmware on this ESC?
The Emax BLHeli Series 30A ESC can be programmed using a dedicated ESC programmer connected to the programming pads on the board, or through your flight controller if it has ESC programming capability via software. Download the latest BLHeli firmware from the official BLHeli GitHub repository, connect your programmer to the ESC, and use BLHeliSuite software to flash the firmware and adjust parameters like timing, throttle range, and protection thresholds. If using flight controller programming, access the ESC settings through your controller's configuration software and make adjustments without additional hardware.
What motor KV range is compatible with this ESC?
The Emax BLHeli Series 30A ESC works with brushless motors across a wide KV range, typically from 1000KV to 4000KV depending on your battery configuration and desired performance. For 3S batteries, higher-KV motors (2500KV-4000KV) are common for racing drones, while 4S batteries pair well with lower-KV motors (1500KV-2500KV) for increased torque. The BLHeli firmware allows you to adjust timing parameters to optimize performance for your specific motor, so compatibility is flexible. Consult your motor specifications and flight controller documentation for recommended KV ratings.
When will I receive my order?
Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.
What is your return and warranty policy?
We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.
Why Buy from The Engineer Store
- Genuine Products: Sourced directly from authorized distributors with authentication
- Expert Team: Our technical team validates every product before listing
- Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
- Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
- Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
- Technical Support: 24/7 expert guidance via email and WhatsApp
- Returns: 7-day return policy on manufacturing defects only
Buy Emax BLHeli Series 30A ESC with Oneshot (Original) Online in India
Purchase the Emax BLHeli Series 30A ESC with Oneshot (Original) online at The Engineer Store, India's trusted source for genuine electronics. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on Emax BLHeli Series 30A ESC with Oneshot (Original) with fast shipping and expert support.
Our team in Bengaluru is available 24/7 to support your journey from product selection to project completion