Enhanced-CNC-Controller

This is a ARM based 3 Axis CNC Software. Based on FreeRTOS.

We use the following Hardware:

• STM32F429 DISCO Board
• TI DRV8825 for X Y Z Stepper Driving
• A PWM based MOSFET Spindle Control

Current Supported G-Codes

• G00
• G01
• G10
• G11
• G20
• G21
• G28
• G29
• G90
• G01
• G92
• M02
• M03
• M05
• M17
• M18
• M30

Dependience Requirement

• Ubuntu or MAC OSX
• st-link or openocd
• arm-none-eabi-gcc 4.8

Buring the Software to Board

   make
   make openocdflash or make flash (Depends on what you are using)

Using the Software

• We Use the Touch Screen of STM32F429 DISCO to Control our machine

  There are modes

  • JOG mode for manual control
  • Spindle for Spindle Control (10 Steps)
  • Gcode for gcode ttransmission

• Python G-Code Sender

  • Usage

python3 main.py -f NC_FILE -p /dev/tty*

• Must make Control Board Enter Gcode Mode First

Pin Connections

PA9 -> USART
PA10 -> USART

PB4 -> PWM Spindle Ctl
PB7

PB12
PB13
PB14
PB15

PC1
PC3 -> X Motor Enable
PC4 -> Y Motor Enable
PC5 -> Z Motor Enable
PC8 -> Y Motor Direction
PC11 -> X Motor Direction
PC12 
PC13 -> Z Motor Direction

PD2
PD4
PD5
PD7

PE2 -> X Motor Step
PE3 -> Y Motor Step
PE4 -> Z Motor Step
PE5
PE6

PF6

PG2
PG3
PG9 -> X Axis - Limit
PG13 -> Y Axis - Limit
PG14 -> Z Axis - Limit

TODO

• Add G02 G03 Code
• Add Z surface detection
• Add SD Card Support