#stm32f405

[hardbananamiracle]

Exploring the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV: A High-Performance Drone Flight Control System

In the world of drones, the flight control system (FC) and electronic speed controller (ESC) are two key components that directly influence the stability, maneuverability, and overall flight experience of the drone. In recent years, as FPV (First-Person View) drones have gained popularity, a range of excellent flight control systems have emerged on the market. Among them, the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV stands out for its outstanding performance and highly integrated design, making it a top choice for drone enthusiasts and competitive pilots alike. Today, we will dive deeper into this flight control system to help you better understand its functionality, advantages, and how to maximize its potential in your drone.

What is the SpeedyBee F405 V4? The SpeedyBee F405 V4 is a high-performance flight controller designed by SpeedyBee. It utilizes the advanced F405 chip, which provides powerful computing capabilities and precise flight control for drones. The F405 V4 is built to offer a balance between performance and stability, making it suitable for FPV racing, freestyle flying, and other complex flight scenarios. Its key advantage lies in its ability to process high-speed data and support multiple sensors, enabling highly accurate and smooth flight control.

Core Components: BLS 55A ESC and Integrated Design Unlike many traditional flight controllers, the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV system adopts an integrated design. The ESC (electronic speed controller) is one of the critical components of the drone's power system. It is responsible for controlling the speed of the motors, ensuring they operate accurately according to the flight controller’s commands. This flight control system comes equipped with a 55A ESC, which can handle up to 55 amps of current per channel, making it suitable for high-power motors, particularly in FPV racing and high-speed flights.

The 55A ESC provides sufficient current for the motors, ensuring that the drone operates smoothly under various load conditions. For FPV drone enthusiasts, this means that even in high-demand situations or when the drone is subjected to instant high loads, the SpeedyBee F405 V4 can still deliver the necessary power output, ensuring smooth and safe flight performance.

30x30mm Mounting Hole Distance: Compatibility and Compact Design The size and layout of the drone frame often place high demands on the flight controller selection. The SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV system features a 30x30mm standard mounting hole distance, making it compatible with most FPV drone frames that follow this standard. This design allows the flight controller to be securely mounted in a variety of frames while maintaining a compact size that reduces the drone's weight and enhances overall performance.

This compact and efficient design is essential in FPV racing, where every gram of weight impacts the drone’s speed and maneuverability. In racing, minimizing the drone’s weight directly influences flight speed and handling responsiveness. By integrating the ESC and flight controller into a single unit, SpeedyBee F405 V4 reduces wiring complexity and installation time, making it easier to assemble and enhancing the flying experience.

Supporting 3-6S Batteries: Flexible Power Options Another noteworthy feature of the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV system is its support for 3S to 6S batteries. This means that it is compatible with a range of battery configurations, from the lower voltage 3S batteries to higher voltage 6S batteries. The choice of battery directly impacts the drone's flight time, power output, and responsiveness. For long-duration flights or high-intensity applications, the 6S battery support allows for stronger power output and longer flight times.

3S batteries are ideal for beginners and lighter flight applications, while 6S batteries are typically used in racing and high-performance flights. By supporting a wide range of battery configurations, the SpeedyBee F405 V4 offers greater flexibility, allowing users to select the most suitable power setup based on their flight needs.

FPV Flight and Real-Time Video Transmission The core advantage of FPV flying lies in offering a first-person view, allowing pilots to have a more intuitive and immersive control experience. The SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV system fully supports FPV flying, seamlessly connecting with FPV cameras and video transmission systems. Pilots can wear FPV goggles to experience a real-time view from the drone, providing an immersive flying experience.

The integrated design of the flight controller and video transmission system ensures that the entire flying process is smoother. It not only reduces flight control latency but also improves the stability of video transmission. In racing or complex flight conditions, pilots need millisecond-level responsiveness, and the SpeedyBee F405 V4’s high-performance flight controller and low-latency video transmission ensure precise control and efficient flying.

Conclusion: Why Choose the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV? From the above analysis, it’s clear that the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV is a highly integrated, high-performance flight control system ideal for FPV racing and recreational flying. It not only supports efficient motor control but also features powerful flight control capabilities and broad compatibility, making it suitable for a variety of flying needs.

The advantages of the SpeedyBee F405 V4 include:

A high-integrated design that reduces wiring complexity and improves installation convenience. A powerful 55A ESC that ensures stable operation for high-power motors. A 30x30mm standard mounting hole distance, making it compatible with most FPV frames. Support for 3S to 6S batteries, providing flexibility for different power setups. Excellent FPV support, ensuring stable and smooth real-time video transmission. If you're looking for a high-performance and easy-to-install flight control system, the SpeedyBee F405 V4 BLS 55A 30x30 ESC&FC FPV is undoubtedly an excellent choice. It’s not only ideal for racing pilots but also for those seeking a stable and efficient flight experience. Whether you're a beginner or an experienced pilot, this flight control system will deliver a flying experience that meets your needs.

[jayakody2000lk]

Adapting HX711 modules for 3.3V Operation

The HX711 is a versatile integrated circuit (IC) designed for precision analog-to-digital (A/D) conversion, particularly suited for strain gauge load cell applications. It features a 24-bit A/D converter with a differential input stage capable of handling both single-ended and differential input signals. Additionally, this device offers adjustable gain amplification to accommodate various load cell sensitivities.

A common module based on the HX711 available in the market, including on AliExpress, is shown below. This module utilizes its internal analog supply regulator, which ensures a stable analog supply (AVDD) for the ADC and other internal components. The output voltage of the regulator (AVDD) is calculated using the following formula: VAVDD = VBG × (R1 + R2) / R2.

According to the electrical characteristics listed in the datasheet, the reference bypass voltage (VBG) is 1.25V. For the modules mentioned, R1 is set at 8.2kΩ and R2 at 20kΩ. By substituting these values into the formula, we calculate AVDD to be approximately 4.29V.

The HX711 IC operates within a voltage range of 2.6V to 5.5V. However, many HX711 modules on the market come with an internal voltage regulator that outputs approximately 4.29V. This can pose challenges when using the module with 3.3V microcontrollers. Furthermore, the datasheet specifies that the output voltage of the regulator should be at least 100mV lower than the supply voltage (VSUP), making the current regulator's output voltage incompatible with 3.3V supply voltages.

To address this, we need to ensure that AVDD is within the 2.6V to 3.2V range to make the module compatible with both 3.3V and 5V systems. After conducting some calculations, we determined that replacing R1 with 10kΩ and R2 with either 15kΩ or 12kΩ would be ideal. Using a 15kΩ resistor gives an AVDD of 3.1V, while using a 12kΩ resistor reduces it to 2.75V. In one of our experimental boards, we opted to replace R2 with a 12kΩ resistor.

As a further test, we lowered the AVDD to approximately 1.6V, and at this voltage, the HX711 still produced the correct results in our test setup. Interestingly, we observed that swapping R1 and R2 allows us to achieve an AVDD of 1.76V. To test this, we swapped R1 (8.2kΩ) and R2 (20kΩ) in one of the modules, and after applying a 5V supply, we noted that the AVDD returned at 1.65V, with the HX711 still providing correct outputs.

To evaluate the boards, we created a quick prototype using the STM32F405 MCU. In this prototype, we powered the HX711 module with 3.3V and directly connected its I/O pins to the STM32 GPIO pins.

For interaction with the module, we utilized the HX711 library provided at https://github.com/PCov3r/HX711-STM32-Library. The source code for our test firmware is available here.

After making the above modifications, all modules produce a stable output at 3.3V. We tested these modules with both 3.3V and 5V MCUs, using 5kg, 10kg, and 20kg load cells, and it operated correctly across all these combinations.

[circuitme]

Extension render

👀Extremely simple board

The Adafruit Feather Express board with STM32F405 extension has been designed and is finished now. I am ready to order PCBs at JLCPCB now. == 👀Deska pro rozšíření Feather boardu je vážně maličká a jednoduchá

Výchozí deska je Adafruit Feather Express s STM32F405 a navrhnul jsem pro ní rozšíření s I2C akcelerometrem pro vytvoření dataloggeru. Nyní jsem připravený objednat výrobu desek.

[bestshoppingapp-blog]

Matek F405-STD BetaFlight Flight Controller STM32F405 Eingebauter OSD Inverter für … Matek F405-STD BetaFlight STM32F405 Integrierte OSD Inverter Flight Controller für RC Multirotor FPV Racing Drone Buy it Now

[mangowall]

Description:   MicroPython development board adopts STM32F405 , sends data by USB port. It works between 3.6V and 10 V, with 4 build in LED light and one accelerating sensor. Let you be a geek ...

[couponsofferte]

✂ Matek F405-STD BetaFlight STM32F405 Flight Controller Built-in OSD Inverter for RC Multirotor FPV Ra 💰 27.27$ anzichè ✖32.08$ 💫 15% di sconto 🔗 https://it.banggood.com/custlink/K3KEP4f1We offerta con coupon ✂BGF405CM✂ ⏰ scade il 11 dicembre https://www.couponsofferte.it/coupon/Matek-F405-STD-BetaFlight-STM32F405-Flight-Controller-Built-in/14620

[phungthaihy]

Matek Systems F405-WING (New) STM32F405 Flight Controller Built-in OSD for RC Airplane Fixed Wing http://ehelpdesk.tk/wp-content/uploads/2020/03/1964435469-1.jpg

[120stillwell]

For just $112.00 EMAX Mini Magnum 2 F4 35A Flytower 20x20mm 35A 2-6S BLHeli_32 4in1 ESC + F4 Flight Controller OSD+VTXSpecification(Instruction manual):Brand name: EMAXItem name: mini magnum 2 F4 35A stack Total weight: 17.21gF4 flight controller:(OMNIBUSF4 Firmware)STM32F405 MCUMPU6000 accelerometer/gyro (connected via SPI)On-board OSDOn-board Buzzer Integrated 5V/3A BECDedicated PPM/ Sbus receiver input30x27mm board with 20mm mounting holes35A BLHeli_32 ESC:Continuous current 35A ( max burst 40A)Supply voltage 2-6S Lipo( 1700kv Motor LIMIT for 6S )STM32F051K6U6 MCU BLHeli_32 firmware,support DSHOT,MULTISHOT,ONESHOT125Top quality MOSFET 3oz high TG PCB board32x37mm board with 20mm mounting holes.Current Sensor VTX:Frequency band: 5658-5945MHz (FCC Compliant Channels / with HAM unlock)TBS Audio ControlChannel: 37Transmit power: 13dBm/23dBm(25mW/200mW)Supply voltage: 4.5V-5.5VAntenna port: 50Ω Package included:1x EMAX mini magnum 2 F4 35A stack 

[zabpadotcom]

Matek Systems F722-WING STM32F722RET6 Flight Controller Built-in OSD for RC Airplane Fixed Wing

https://zabpa.com/product/matek-systems-f722-wing-stm32f722ret6-flight-controller-built-in-osd-for-rc-airplane-fixed-wing/ Matek Systems F722-WING STM32F722RET6 Flight Controller Built-in OSD for RC Airplane Fixed Wing Description: Brand name: Matek MCU: 216MHz STM32F722RET6 IMU: MPU6000 (SPI) Baro: BMP280 (I2C) OSD: AT7456E (SPI) Blackbox: MicroSD card slot (SPI) 5x Uarts (1,2,3,4,6) with built-in inversion 1x Softserial-Tx 2x Motors, 6x Servos outputs 1x I2C 4x ADC (VBAT, Current, RSSI, AirSpeed) 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red) Switchable Dual Camera Inputs Switchable 5V/9V for Camera/VTX High-precision Current Sense TR/SA VTX control: Yes WS2812 Led Strip : Yes Beeper : Yes RSSI: Yes Analog Airspeed sensor: Yes Digital Airspeed sensor: Yes   FC Firmware INAV Flight/BetaFlight Target: MATEKF722SE PDB Input voltage range: 9~36V (3~6S LiPo) w/TVS protection 2x ESC power pads Battery Voltage Sensor: 1:10 (Scale 1100) Current Senor: 132A,  3.3V ADC,  Scale 250 BEC 5V output Designed for Flight controller, Receiver, OSD, Camera, Buzzer, 2812 LED_Strip, Buzzer, GPS module, AirSpeed Continuous current: 2 Amps, Max.3A BEC 9V /12V output Designed for Video Transmitter, Camera, Gimbal ect. Continuous current: 2 Amps, Max.3A 12V option with Jumper pad   BEC Vx output Designed for Servos Voltage adjustable, 5V Default, 6V or 7.2V via jumper Continuous current: 5 Amps, Max.6A Output Ripple: 50mV (VIn=24V, VOut=5V@5A load) BEC 3.3V output Designed for Baro / Compass module and Spektrum RX Linear Regulator Continuous current: 200mA Physical Mounting: 30.5 x 30.5mm, Φ4mm with Grommets Φ3mm Dimensions: 54 x 36 x 13 mm Weight: 25g F722-WING VS F405/F411-WING   F722-WING F405-WING F411-WING MCU 216MHz STM32F722 168MHz STM32F405 100MHz STM32F411 IMU MP6000 MP6000 MP6000 BARO BMP280 BMP280 BMP280 OSD AT7456E AT7456E AT7456E BlackBox MicroSD MicroSD / Firmware INAV BetaFlight INAV ArduPilot INAV BetaFlight Dual Camera In Yes / / 5V/9V Switcher Yes / / Current Sense High precision 132A 104A 78A Max.Voltage 36V(8S) 30V(6S) 30V(6S) Motors 2 2 2 Servos 6 7 5 UART 5 6 2 Softserial 1 1 1 Uart Inversion All RX2 RX1 5V for FC 2A 2A 2A 9V for VTX 2A 2A / Vx for Servos 5A 5A 3A LDO 3.3V 200mA 500mA 200mA Size 54×36 56×36 41×28 Weight 25g 25g 12g Matek Systems F722-WING Flight Controller Manual, click here Package Included: 1x Matek Systems F722-WING STM32F722RET6 Flight Controller Shopping Made Fun Read More https://zabpa.com/product/matek-systems-f722-wing-stm32f722ret6-flight-controller-built-in-osd-for-rc-airplane-fixed-wing/

[how2to18]

via Adafruit Industries – Makers, hackers, artists, designers and engineers! https://ift.tt/3dsg082

[circuitme]

Feather for extension

📚A few weeks ago I was asked if I have a data logger for acceleration data

🔴 I had to say I do not

I do not have time to develop anything complex but I found Adafruit Feather board Express with STM32F405 and SD cart slot. The perfect carrier board for the data logger. Now I am in the process of ordering ADC and DAC kit board at JLCPCB. I realized this is the ideal time to add another board to share shipping costs. So here is the schematics of accelerometer board for this nice Feather board by Adafruit. == 📚Před pár týdny jsem byl dotázán, zda nemám data logger pro data z akcelerometru

🔴 Musel jsem říct, že nemám

Nyní nemám moc času vyvíjet cokoliv složitého, ale načšl jsem hezký Feather board of Adafruit s STM32F405 a slotem na SD kartu. To je perfektní nosná deska pro budoucí data logger. Protože jsem před objednávkou výroby desek pro ADC a DAC kity v JLCPCB, napadlo mě, že je to ideální doba pro přidání další desky k objednávce a můžu tak sdílet jedno poštivné. Tedy zde je schéma pro destičku s akcelerometrem pro Feather board od Adafruit.

[grocerysus]

MAMBA F405 MK2 Betaflight Flight Controller F40 40A 3-6S DSHOT600 FPV Racing Brushless ESC

MAMBA F405 MK2 Betaflight Flight Controller F40 40A 3-6S DSHOT600 FPV Racing Brushless ESC

MAMBA F405 Betaflight Flight Controller & F40 40A 3-6S DSHOT600 FPV Racing Brushless ESC

Specificaiton:

Mamba F405 FC

Item name: F405 Betaflight Flight Controller Input power: 12.6-25V (3-6S) BEC: 5V/1.5A MCU: STM32F405 Gyro: MPU6000 Flash: 16MB OSD: AT7456 Mounting hole: 30.5*30.5mm Weight: 6g Mamba F40 ESC Item name: Mamba F40HV ESC  Input voltage: 3-6S (12.6V~25V) Continue…

[mangowall]

Features: �� – Debugging default output about 9V before use – Input voltage 4.5-8V – Continuously adjustable output voltage 4.3-27V (Any voltage above 4.3V and below 27V can be output and ...

[myfpvstore-blog]

BetaFPV F4 2S Brushless Flight Controller

BetaFPV F4 2S Brushless Flight Controller

BetaFPV F4 2S Brushless Flight Controller

This F4 flight controller is designed for BetaFPV 2S whoop drones; the Beta65X and Beta75X. It will turn these 2s brushless whoop drones into beasts.

SPECIFICATIONS:

CPU: STM32F405 (Overclock to 240MHz)

Six-Axis: MPU6000

Size: 26mm x 26mm, whoop mounting pattern

Firmware version: Betaflight OMNIBUSF4SD (OBSD)

OSD: Built-in BetaFlight OSD (STM32 controls…