BLHleli ESC

BLS_hd.SchDoc

BLS_V1.1.PcbDoc

BOM download

61687

F411 flight control

Introduction: The STM32F411 flight control of the flying machine
uses matek firmware and supports betaflight and INAV.

Sensor: MPU6000+BMP280+QMC5883 Interface: PWM×6, uart×2, LED, buzzer, OSD, USB
Size: 30×30mm, mounting hole 20×20mm
 
 
Description:
1. The resistance detected by VBAT is 10K: 1K, There is no change in the schematic diagram, just solder 10 directly on the PCB.
2. After the test flight, the self-stabilization is very strong and the heading is very stable.
3. The BF firmware used is 3.5.7. After upgrading to a higher version, the magnetometer will not be able to detect it. (The manufacturer seems to have stopped producing the flight controller. It is probably because the subsequent firmware will not be maintained.)
4. There seems to be something wrong with the OSD. You can update the font. The OSD display in the Task list is also normal, but the image transmission cannot receive the picture. (I’ll work on it later, I’ll update it when it’s done...)
 

02_Sensor.SchDoc

MATEK_F411SE.PcbDoc

Bitmap MATEK_F411SE.pdf

Assembly drawing MATEK_F411SE.pdf

01_MCU&Power.SchDoc

betaflight_3.5.7_MATEKF411SE.hex

Hover test.mp4

BOM download

61688

Beidou module test HT1612

Introduction: Beidou test board, using HT1612, uses serial port (RX, TX) to interact with the host computer

As required by the course, the Beidou test board was produced. In the actual test, the signal can be found. In the antenna placement window, more than 5
 
four-layer boards of GPS and Beidou satellites can be found. The impedance matching line width is 32.61mil.
 
The Beidou module uses USB to ttl to connect to the serial port. The upper level The machine uses ustar, and it has been uploaded to the attachment.
 
When welding, the inductor package was not adjusted properly, and the pad appeared large, which does not affect the use. The battery package was drawn by myself. If you do not use the battery, you do not need to weld the BAT capacitor. The battery was originally designed for tire pressure battery welding. Use it, forget to design the charging circuit, and temporarily discard
 
the physical picture (the pins on the left are GND, TXD, RXD, and 5V from top to bottom, and forget to mark them in the picture):
 
 
PCB:
 
 
 
Schematic: