If there’s already something there you should click the little button ... blink sketch from the IDE examples. Be sure to pick “Upload Method: STLink” from the Tools menu of the Arduino ...

Arduino Camping Light * Camping Light with a single push button switch to control the light output between off, dim, medium, and high brightness * Test Configuration: MCU: Arduino UNO R3 IDE: Arduino ...

Arguably the biggest advantage of the Arduino ecosystem is how easy it is to get your code running. Type a few lines into the IDE, hit the button, and in a few seconds you’re seeing an LED blink ...