Here is a very simple breadboard power supply that outputs a selectable 5V or 3.3V regulated voltage.
I am a beginner in electronics and programming for microcontrollers, so traditionally I started from driving an LED which is a ‘Hello World!’ project in microcontrollers world. I started with STM32 controller (STM32F103) which is ARM, and I can use C language.
When my LED finally started blinking, I thought it might be useful from me (and hope I can be useful for someone else) if I create a simple re-usable template project. As a result, now there is one more repository
I use Linux, no fancy GUI, sorry.
I am a beginner in electronics, and just learned that LEDs and microcontroller’s I/O ports are so sensitive … Thanks Mr. Ohm whose law saves us!