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pid-stm32f746

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Embedded graphical interface for PID control

// repository documentation

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# Embedded graphical interface for PID control
This project implements an embedded graphical interface for PID control.

# Introduction
The idea behind this project is allow user to control speed motor using PID (*Proportional* - *Integral* - *Derivative*) control system from an simple graphical interface.

This project uses a microcontroller plataform (`STM32`) to implement a real PID control for DC motor control.
Development was done using `STM32F746g-Discovery` board from STMicroelectronics

# Graphical interface
The first screen contains buttons and controls for update/clear PID variables and set point

![Aplicacao](https://raw.githubusercontent.com/JON95Git/pid-stm32f746/main/pid-gui-screen-param.png)

The second screen contains two widgets to monitor input and output system values, PWM duty cycle to mosfet driver and RPM

![Aplicacao](https://raw.githubusercontent.com/JON95Git/pid-stm32f746/main/pid-gui-screen-monitor.png)

The third screen contains a graph to show data

![Aplicacao](https://raw.githubusercontent.com/JON95Git/pid-stm32f746/main/pid-gui-screen-graph.png)

# Dependencies

## Software
To build this project you need:
- A PC `host` runing `GNU/Linux`
- Toolchain [arm-none-gnueabi-gcc](https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads) for `arm cortex M` microcontrollers
- `Make` tool to use `Makefile`
- Library [LVGL](https://github.com/lvgl/lvgl) (up to `7.0`)
- [OpenOCD](http://openocd.org/) tool for build/debug firmware
- [STM32CubeMX](https://www.st.com/en/development-tools/stm32cubemx.html) to change peripheral
- [CMSIS DSP](https://www.keil.com/pack/doc/CMSIS/DSP/html/index.html) to PID control

## Hardware
To run this project you need
- Devboard [STM32F746g-Discovery](https://www.st.com/en/evaluation-tools/32f746gdiscovery.html)
- DC motor 200RPM 3-6V, 
- Driver Mosfet Irf 520 
- RPM sensor (based on LM393)
- Encoder disc 20 steps
- Low pass filter

## Circuit diagram

![Diagram](https://raw.githubusercontent.com/JON95Git/pid-stm32f746/main/stm32-pid-diagram.png)

## Application running

You can see the application running [here](https://www.youtube.com/watch?v=ZlJbMAFaLPU)

pid-stm32f746

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