PCB layout
- The PCB layout is a mirrored positive one - black on white.
- Mirrored as viewed from the silkscreen top (component) side.
- The PCB layout is printed 1:1 on paper by means of a laser printer or copier machine.
- The laser printer or copier toner will not run out when it gets wet or oily.
- The ink of an inkjet paper print does run out and inkjet printers are therefore useless with the described method.
Circuit Diagram
- Very popular microcontroller.
- A lot of references and a very good supports by the manufacturer
- So many choices of microcontroller design with different function and application


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