STM32F4 Discovery Blog

Overclock STM32F4 device up to 250MHz 21

Overclock STM32F4 device up to 250MHz

Let’s test what STM32F4xx devices can do. I have all “4 speed families” at home so why not to try it how fast we can go. By default, for those who don’t know max frequencies for STM32F4xx devices, they are in list below: 84MHz: STM32F401 MCUs, including Nucleo-F401 board 100MHz: STM32F411 MCUs, including Nucleo F411 board 168MHz: STM32F405/7 and STM32F415/17 MCUs, including STM32F4-Discovery board 180MHz: STM32F427/29 and STM32F437/39 MCUs, including STM32F429-Discovery board Ok, we have everything provided, let’s test how far...

Project 03- STM32F4xx PID controller 33

Project 03- STM32F4xx PID controller

CMSIS files from ARM provides ARM Math functions. There are also PID controller functions in different formats for f32, q31 and q7. This tutorial/project will talk about how to implement PID controller on STM32F4xx using PID functions from ARM. PID Controller Fast about PID controller. PID stands for Proportional-Integral-Derivative controller. This is a control loop feedback mechanism widely used in industrial control systems. It calculates the error between measured value and the desired setpoint value. According to the error, it...

Snake game on STM32F429-Discovery board 9

Project 02- Snake game for STM32F429-Discovery board

After first FFT project, I’ve decided to make a simple snake game. Basically I’ve made it in Labview first for my partial exam at the university. It looked great so why not port it also to STM32F429-Discovery board which has everything already prepared for us. You just need USB OTG cable and external keyboard to drive snake and you are ready to play. Snake game Features Works on STM32F429-Discovery board Supports external keyboard using USB HID Host stack on STM32 Supports...

MPU-6050 6-axes gyroscope and accelerometer 113

Library 43- MPU-6050 6-axes gyro and accelerometer for STM32F4

MPU-6050 is a 3-axes accelerometer and 3-axes gyroscope MEMS sensor in one piece. It can also measure temperature. It is very cheap device but also very powerful. It can measure simultaneously three (X, Y and Z) channels for accelerometer and gyroscope at the same time with 16-bit resolution. This chip is also compatible with MPU9150, except that MPU9150 has 3axes magnetometer (or compass) included. MPU-6050 Features Accelerometer 4 selectable full scales (2G, 4G, 8G and 16G) Gyroscope 4 selectable full scales...

Servo motor 71

Library 42- Control RC servo with STM32F4

Library 42 allows you to simple connect and interface RC servo motors with STM32F4. They are small, cheap motors, commonly used for RC (Radio Control), small scale robotics and more. Servos are really simple to interface. They expect 50Hz signal on the input. According to the pulse length (duty cycle) they rotate between 0 and 180 degrees. If signal has 1ms pulse length, motor rotation will be 0 degrees and if signal has 2ms length, then it will have 180degrees rotation. Any pulse length...

STM32F4 FFT example 147

STM32F4 FFT example

As you maybe know, STM32F4 is Cortex M4 with DSP instructions. This allows you to make a FFT with a few simple steps. For that purpose, I have made an example, on how to create FFT with STM32F4. I recommend use my FFT library for future use. It is built on ARM DSP library with everything included for beginner. When the ARM company issued Cortex-M4 core, it also published DSP libraries for mathematics and other stuff. And there are also...