The Little Favorite LittleBee 30A-S OPTO Electronic Speed Controller is a lightweight and powerful option. It features a Silabs processor and fast dedicated driver chips, and comes with BLHeli-S Firmware using the Oneshot125 communication protocol for quick throttle response.
Renowned for its high thrust output and reliability, the Little Bee ESC is a top performer. The BLHeli_S firmware ensures smooth throttle response by using hardware-generated motor PWM.
These ESCs can handle a 30A current draw, making them ideal for high-performance drones, including those with 5s batteries or 6″ tri-blade props. They support one-wire pass-through for easy flashing via clean flight with compatible flight controllers like Naze, SPF3, and Revo F4.
Recommended setups: 2205-2208 motors, 5 or 6″ Tri-blade props, 4s or 5s battery.
Features:
- BEC: No BEC.
- Light weight
- MCU: SILABS EFM8BB21F16, MCU running at 48MHz
- Dedicated driver chip
- OPTO ESC
- Battery: 6-25.2V (2-6S Lipo)
- PCB board: 4 layers blind pole board, 3 oz copper
- Motor Wire: 70mm (20AWG)
- Signal Wire: 120mm
- Firmware: BLHeli_S (Supports Oneshot / Oneshot42 and Multishot / Active Braking – dampened light mode)
Specification:
| Model | Little Bee 30A-S |
|---|---|
| Input Supply Support | 2 – 6S LiPo |
| Rated Current | 30A |
| Burst Current | 35A |
| Bootloader | BLheli_S |
| Length(mm) | 35 |
| Width(mm) | 17 |
| Height(mm) | 4 |
| Weight(gm) | 10 |
| Shipping Weight | 0.015 kg |
| Shipping Dimensions | 4 × 2 × 2 cm |
Package Includes:
1 x Favourite LittleBee BLHeil-S Spring 30A OPTO ESC
Favourite LittleBee BLHeil-S Spring 30A OPTO ESC Overview
The Favourite LittleBee BLHeil-S Spring 30A OPTO ESC is a high-performance electronic speed controller designed for racing and freestyle drones. Equipped with BLHeli-S firmware and an Oneshot125 protocol, it delivers precise and rapid throttle response for 2–6S LiPo setups.
Key Features of Favourite LittleBee BLHeil-S Spring 30A OPTO ESC
- 30 A continuous current rating (35 A burst) for demanding flight profiles
- Wide voltage support: 6–25.2 V (2–6S LiPo)
- SILABS EFM8BB21F16 MCU running at 48 MHz with dedicated driver chip
- BLHeli-S firmware and Oneshot125 communication for fast, smooth throttle
- OPTO isolation design—power board separation, ideal for custom BEC solutions
- Genuine Favourite LittleBee unit with fast shipping from Zbotic
Applications and Use Cases
- 5″ to 6″ FPV racing quads using 2205–2208 brushless motors
- Freestyle drones requiring quick throttle adjustments and high thrust
- 6″ tri-blade prop setups on 5 S or 6 S battery packs
- Custom multirotor builds where OPTO isolation is preferred
- Flashing and tuning via one-wire pass-through on Naze, SPF3, or Revo F4 controllers
How to Use Favourite LittleBee BLHeil-S Spring 30A OPTO ESC
Solder motor phase wires and battery leads to the ESC pads, then connect the signal and ground wires to your flight controller’s throttle output. Provide a separate 5 V supply to the ESC’s signal rail or flight controller BEC. Calibrate throttle endpoints in your flight controller, then flash or adjust BLHeli-S firmware via one-wire pass-through over Cleanflight or Betaflight.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Does the LittleBee 30A-S ESC support 6S LiPo?
Yes. This ESC handles 2–6S LiPo (6–25.2 V), making it suitable for both 5 S and 6 S high-voltage racing setups.
Can I flash or update firmware without an external programmer?
Absolutely. The one-wire pass-through feature lets you flash or configure BLHeli-S firmware via Cleanflight or Betaflight when connected to compatible controllers like Naze, SPF3, or Revo F4.
What does OPTO mean and do I need a separate BEC?
OPTO indicates that the ESC has no onboard BEC. You must supply 5 V to the ESC’s signal rail from your flight controller or use an external BEC for power.
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Read More →Technical Specifications
| Current Rating | 30A |
|---|---|
| Interface / Protocol | TTL |
| SKU | AI4597 |
| Weight | 0.01235 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Favourite LittleBee BLHeil-S Spring 30A OPTO ESC is a versatile (esc) drone speed controller used across a wide range of applications including brushless motor speed control, FPV drone builds, multirotor platforms, and RC aircraft.
Common use cases:
- Controlling motor speed in a quadcopter
- Replacing a burnt ESC after a short
- Upgrading to BLHeli_32 for smoother throttle response
This product is ideal for drone builders and RC enthusiasts.
Technical Tip: Choose ESC amperage 20% above your motor's max draw. DShot600 protocol recommended for modern builds.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Raghav Panchal (verified owner) –
Pretty good Favourite LittleBee BLHeil-S Spring 30A OPTO. Works as expected for my drone project. Would buy again.
Chitra Jain –
Excellent product for the price. My drone flies smoothly with this Favourite LittleBee BLHeil-S Spring 30A OPTO. Highly recommended!
Bhavna Rao (verified owner) –
Good product overall. My drone is flying well with this Favourite LittleBee BLHeil-S Spring 30A OPTO. Satisfied with the purchase.
Tanya Nair (verified owner) –
Great quality Favourite LittleBee BLHeil-S Spring 30A OPTO. Perfect specs for my drone project. Fast delivery too!
Abhishek Joshi (verified owner) –
Received the Favourite LittleBee BLHeil-S Spring 30A OPTO in great condition. Testing done, everything works perfectly.
Ishan Rajan (verified owner) –
Excellent Favourite LittleBee BLHeil-S Spring 30A OPTO! Perfect for my quadcopter build. Arrived well packed and works flawlessly.
Kiara Chauhan (verified owner) –
Perfect for my agriculture drone project. This Favourite LittleBee BLHeil-S Spring 30A OPTO handles the weight effortlessly.
Anil Menon (verified owner) –
Excellent product for the price. My drone flies smoothly with this Favourite LittleBee BLHeil-S Spring 30A OPTO. Highly recommended!
Zara Chopra –
Decent Favourite LittleBee BLHeil-S Spring 30A OPTO. Took some effort to set up but working now.
Divyansh Bisht (verified owner) –
Using this Favourite LittleBee BLHeil-S Spring 30A OPTO in my hexacopter. Smooth operation and excellent thrust.
Siddharth Kamath (verified owner) –
Outstanding Favourite LittleBee BLHeil-S Spring 30A OPTO! Installed it on my racing quad and the performance is amazing.
Arnav Agarwal (verified owner) –
Received the Favourite LittleBee BLHeil-S Spring 30A OPTO in great condition. Testing done, everything works perfectly.
Suresh Garg –
Great Favourite LittleBee BLHeil-S Spring 30A OPTO for beginners and professionals alike. Highly recommended for drone enthusiasts.
Manoj Negi (verified owner) –
Good quality Favourite LittleBee BLHeil-S Spring 30A OPTO. Minor scratches on arrival but functionally perfect.
Amit Bajaj (verified owner) –
Superb Favourite LittleBee BLHeil-S Spring 30A OPTO! Built my first drone with this and it performed beyond expectations.
Eshan Das (verified owner) –
Pretty good Favourite LittleBee BLHeil-S Spring 30A OPTO. Works as expected for my drone project. Would buy again.
Raghav Das (verified owner) –
Pretty good Favourite LittleBee BLHeil-S Spring 30A OPTO. Works as expected for my drone project. Would buy again.