Electrical projects

This project is about simulating a traffic light. There is a 1-digit common anode 7-segment which shows how long each signal is on. I connected three 220v signal lamp as its lights by a relay board which its relays work at 5v. Output voltage of stm32f103c8t6 is 3.3v so I used three transistors as switches to convert 3v output to 5v that is needed for relay board. Download link: https://drive.google.com/open?id=1UVHMYvGlCxITk0jRz3Y8TPV_h8HHZmJN

This post is about running a blinking LED with STM32F103C8T6. This code was written in MDK Version 5 - Keil. I used a transistor as a driver to prevent MCU from over current cause ARM CPUs work with 3.3v and can not provide high current output. I uploaded program with ST-LINK programmer. Delay is 500 ms and you can change it in the program. There is a simulation in Proteus. Download link: https://drive.google.com/open?id=1b5yuQiFmAGQk1EN5_WoC0AhpC-9L2_Co