Intelligent industrial control board based on Hangshun MCU

project description

• Using HK32F103C8T6 as the main control MCU
• With 5 channels of photoelectric relay output, the relay output has a light display
• With 4 isolated switch inputs and 2 modulus inputs
• BOOT button to avoid troublesome jumpers
• 2 on-board buttons
• 4 LED indicators
• Can use DAP-Link and serial port download program
  • Thanks to Chuangxin Workshop for providing PWLink emulator support

Project overview

• PCB board 3D model
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  • 
• PCB layout 2D model
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• PCB schematic diagram
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• Physical PCB (light board)
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• Physical PCB (soldering)
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Hardware description

BOOT button and NRST reset button

• Replace the old BOOT button in the form of a jumper cap with a button to facilitate debugging operations
  • BOOT startup rules
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  • BOOT in jumper form (not easy to use)
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  • BOOT in button form (easy to use)
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Two onboard key inputs and four optocoupler isolated inputs

• Onboard key input
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• Optocoupler isolation input
  • From top to bottom they are PB7, PB6, PB5, PB4
  • Short-circuit the yellow wireframe part to allow the input to be directly grounded
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Analog input

Five-way optocoupler relay output

• The order of photoelectric relays from top to bottom is PA8, PB15, PB14, PB13, PB12
• LED lights with synchronized display
• !

Debug interface

• Support SWD and serial port

Power supply interface

• The layout supports the following input interfaces
  • micro_USB_B input (5V)
  • Terminal input (5V)
  • Pin header and cable input (5V/3.3V)
  • DC wire input (5V-9V)
• 

development tools

• Lichuang EDA V6.4.17
• keil MDK-ARM Plus Version: 5.25.2.0
• VScode Version: 1.54.3
• STM32CubeMX Version: 6.2.0
• PowerWriter

design record

>The current version is V1.0

• V1.0 known issues

  • Use of Linear Regulators
    • If the power supply is 5V
      • The 5V linear regulator located in the center of the board needs to be removed and its input and output shorted
      • 
  • The distance between the crystal oscillator and the MCU is too far. Although it does not affect the use, it is not standardized enough.
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  • The photoelectric relay part lacks a current limiting resistor, causing the Darlington transistor to overheat. This can be solved by clearing the wiring and using flying wires.
    • Traces that need to be cleared (pink part)
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    • Flying lead position (resistance 2K)
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• V1.1

  • Modify the problem of V1.0 and it can be used normally without cutting the wiring.
  • Update the corresponding wiring diagram
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  •    

last edited time

>March 30, 2021 08:26:45