Redfox A3 35A/45A ESC AIO Flight Controller for 2 to 3.5-inch drones
Introducing the Redfox A3 series flight controller, a new choice in lightweight FPV drones brought to you by the Sub250 team.
Designed specifically for 2 to 3.5-inch drones, it integrates the powerful computational capabilities of the F722 MCU to ensure exceptional flight performance.
Featuring an independently designed Type-C adapter board, it can be conveniently placed at any location on the frame for quick parameter adjustments.
Onboard DJI 6-Pin interface, offering direct connectivity to digital video transmission systems.
Equipped with four sets of UART ports, providing more possibilities for installation and upgrades. It also comes with a 5V@2.5A BEC to meet the increasing demand for additional peripherals.
Sub250 is committed to combining “lightweight” and “high performance” to bring a brand new experience to the racing drone field. The Redfox A3 series flight controller helps you explore the perfect fusion of lightweight design and exceptional performance.
Designed specifically for 2 to 3.5-inch drones, it integrates the powerful computational capabilities of the F722 MCU to ensure exceptional flight performance.
Featuring an independently designed Type-C adapter board, it can be conveniently placed at any location on the frame for quick parameter adjustments.
Onboard DJI 6-Pin interface, offering direct connectivity to digital video transmission systems.
Equipped with four sets of UART ports, providing more possibilities for installation and upgrades. It also comes with a 5V@2.5A BEC to meet the increasing demand for additional peripherals.
Sub250 is committed to combining “lightweight” and “high performance” to bring a brand new experience to the racing drone field. The Redfox A3 series flight controller helps you explore the perfect fusion of lightweight design and exceptional performance.
FC Specification：
MCU: STM32F722
IMU: ICM42688-P
Firmware Target Name: SUB250REDFOX722AIO
OSD Chip: AT7456E
Barometer: Built-in
UART: 6 sets (UART1, UART2, UART3 for Digital VTX SBUS receiver, UART4, UART5 for ESC telemetry, UART6)
External Buzzer: Supported
External LED: Supported
6-Pin DJI Air Unit Plug: Supported
USB Port Type: SH1.0 5PIN to Type-C
BEC Output: 5V 2.5A
Mounting: 25.5mm x 25.5mm, φ3mm hole reduces to φ2mm with Anti-vibration Silicone Grommet
Dimension: 33.5mm(L) x 33.5mm(W) x 6.45mm(H) ,1.6mm Board Thickness
Weight：8.7g
ESC Specification:
Continuous Current: 35A/45A
Burst Current: 45(10s)/55A(10s)
Power Input: 2~6S (LiPo Battery)
ESC Protocol: Dshot300, Dshot600
Current Sensor: Supported
ESC Firmware: BLHeli_32
Features：
- STM32F722 MCU, powerful computing performance with high-speed and real-time response.
- Reliable and durable BLHeli_32 35A/45A ESC supports up to 128khz PWM frequency.
- Independently designed DJI 6PIN interface, directly connected to DJI digital video transmission system.
- TypeC adapter board with boot button, SH1.0 5PIN direct plug, meeting the placement needs of various kinds of small frames.
- 4 sets of complete UART ports provide more possibilities for installation and expansion, and the optimized pad design makes welding easier.
- 5V@2.5A BEC meets the demands of more peripheral devices.
- Supports functions such as OSD parameter adjustment, GPS, LED, buzzer, etc.
- Ultra-light weight of 8.7g, 25.5mmx25.5mm M3 mounting holes, suitable for most frames on the market.
Packaging：
1 x Redfox A3 35A/45A AIO
1 x External USB-C Port Module (Wire Length:150mm)
1 x 6Pin DJI Air Unit Connecting Cable
5 x M2*6.5 Black Anti-vibration Silicone Grommets（4 x Pre-installed）
5 x M2*6.5 Red Anti-vibration Silicone Grommets
5 x M2x10 Screws
8 x M2 Nylon Nuts
1 x 35V 470uf Capacitor
1 x XT30 16AWG 70mm Power Cable
1 x Manual & Support Card
* All duties and taxes are the responsibility of the customer.
Shipping Methods and Charges
We are currently able to ship orders to most international addresses. But some countries are not available to ship batteries without purchasing of whoop drone (logistics company restrictions).
- Some remote address will be charged remote shipping fees according to the quotation of the logistics company.
For the strict Customs Policy, countries below are not available for delivering batteries. Therefore, if you fail to purchase from our site, hope can you understand that. We'll open selling once there is a reliable logistics channel.
-India (Both drones and batteries)
-Kuwait
Shipping Time:
Shipping Methods and Charges
We are currently able to ship orders to most international addresses. But some countries are not available to ship batteries without purchasing of whoop drone (logistics company restrictions).
- Some remote address will be charged remote shipping fees according to the quotation of the logistics company.
For the strict Customs Policy, countries below are not available for delivering batteries. Therefore, if you fail to purchase from our site, hope can you understand that. We'll open selling once there is a reliable logistics channel.
-India (Both drones and batteries)
-Kuwait
Shipping Time:
All orders will be shipped from China.
All orders will be processed within 3-5 working days after your payment clearing.The checking number will be updated within 3-5 working days.
If we are experiencing a high volume of orders or some products are out of stock, shipments may be delayed in a few days.
If there will be a significant delay in the shipment of your order, we will contact you via email. Please make sure your email address is available and remember to check the email for the notification.
Estimated Shipping Time:
Expedited Shipping: 5-10 working days after shipping
Standard Shipping (Registered Mail): 12-30 working days
All orders will be processed within 3-5 working days after your payment clearing.The checking number will be updated within 3-5 working days.
If we are experiencing a high volume of orders or some products are out of stock, shipments may be delayed in a few days.
If there will be a significant delay in the shipment of your order, we will contact you via email. Please make sure your email address is available and remember to check the email for the notification.
Estimated Shipping Time:
Expedited Shipping: 5-10 working days after shipping
Standard Shipping (Registered Mail): 12-30 working days
Batteries shipping: delivery time within 15- 35days usullay (battery only can ship via battery shipping way)
Please note:
* These are estimated delivery times only, Sub250 can not guarantee an exact delivery time.
* The estimated delivery time may be longer if any battery is included in your order.
* We accept no responsibilities and liabilities for the delay in shipping time as this is beyond our control.
* Any problem about shipping info of your order, please contact Customer Support.
Battery Shipping Issues
- We can't ship the battery to the following countries by now: Indonesia / Middle / East / Indonesia/ Philippines/ Vietnam/ India/ Mexico/ UAE/ Brunei/ Finland/ Chile / Brazil / Oman and other remote areas. If your place an order but we don't have a logistic Chanel to ship, we will send an email to inform you to cancel the order.
- For European customers, if your parcel includes only batteries, it will take a longer time for the parcel to arrive in your country. Click here to track your parcel.
- If you only order batteries without a drone, then it can't be shipped by expedited Shipping (including DHL / FedEx / UPS) because of the strict restriction of shipping.
- If the number of batteries in your order exceeds the acceptable range of the logistics, we will ask you to cancel the order or ship the batteries separately(an extra shipping fee may be required).
More Info required
If you are in Taiwan, South Korea, or Brazil, there is some extra information that we need in your order because of your country's import policy.
Wrong Address
Shipments will be sent to the address entered on our web page during checkout. We cannot be held responsible if the incorrect shipping address is entered by the customer during checkout. We can only modify a wrong address if customer contacts us before the package is marked as shipped.
We cannot change shipping addresses after the order has been shipped, as the address information you enter is used as part of the fraud checks and fraud prevention. If additional fees are required to re-ship packages due to address errors, those fees may be passed on to the customer.
Packages that are returned because of an incorrect address provided by the customer will be subject to an additional shipping charge. This shipping charge will apply even if you were not originally charged shipping under a free shipping promotion.
Damaged box or incorrect item(s)
If you receive damaged or incorrect item(s), contact Customer Support in 5 business days with receipt of your shipment to make the necessary corrections.
* All duties and taxes are the responsibility of the customer.
Please note:
* These are estimated delivery times only, Sub250 can not guarantee an exact delivery time.
* The estimated delivery time may be longer if any battery is included in your order.
* We accept no responsibilities and liabilities for the delay in shipping time as this is beyond our control.
* Any problem about shipping info of your order, please contact Customer Support.
Battery Shipping Issues
- We can't ship the battery to the following countries by now: Indonesia / Middle / East / Indonesia/ Philippines/ Vietnam/ India/ Mexico/ UAE/ Brunei/ Finland/ Chile / Brazil / Oman and other remote areas. If your place an order but we don't have a logistic Chanel to ship, we will send an email to inform you to cancel the order.
- For European customers, if your parcel includes only batteries, it will take a longer time for the parcel to arrive in your country. Click here to track your parcel.
- If you only order batteries without a drone, then it can't be shipped by expedited Shipping (including DHL / FedEx / UPS) because of the strict restriction of shipping.
- If the number of batteries in your order exceeds the acceptable range of the logistics, we will ask you to cancel the order or ship the batteries separately(an extra shipping fee may be required).
More Info required
If you are in Taiwan, South Korea, or Brazil, there is some extra information that we need in your order because of your country's import policy.
Wrong Address
Shipments will be sent to the address entered on our web page during checkout. We cannot be held responsible if the incorrect shipping address is entered by the customer during checkout. We can only modify a wrong address if customer contacts us before the package is marked as shipped.
We cannot change shipping addresses after the order has been shipped, as the address information you enter is used as part of the fraud checks and fraud prevention. If additional fees are required to re-ship packages due to address errors, those fees may be passed on to the customer.
Packages that are returned because of an incorrect address provided by the customer will be subject to an additional shipping charge. This shipping charge will apply even if you were not originally charged shipping under a free shipping promotion.
Damaged box or incorrect item(s)
If you receive damaged or incorrect item(s), contact Customer Support in 5 business days with receipt of your shipment to make the necessary corrections.
* All duties and taxes are the responsibility of the customer.
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