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Core concepts
Schematic
The electrical diagram. Shows which parts are connected to which, ignores physical layout.
How it looks
Real image: the CORE3588 schematic, exported by KiCad (shown in greys)
The green READY light on CORE3588, cut from our real schematic. Lines are connections; nothing here says where the parts sit on the board.
- 1Power comes in from the top: the 3.3 volt supply, named PERIPH_3V3.
- 2R61, a resistor that limits the current.
- 3D7, the green light (an LED).
- 4Q2, a transistor used as a switch.
- 5READY_LED_CTL: the control wire from the computer module.
- 6Ground, 0 volts.
How it works
Where it fits
The schematic is checked by ERC and turned into a netlist; the layout must then join exactly those nets in copper.