How to build: drag a part from the toolbar onto the board. Click one pin, then click another to draw a wire β click empty board space in between to bend the cable and keep routing tidy (hold Ctrl to snap that bend to horizontal/vertical). Click a part or wire to edit it in the panel. Press Delete to remove the selected part or wire.
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Selected component
Click a component on the board to see and edit its properties here.
Microcontroller code setup() / loop()
Serial monitor