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AVR AtMega32U4 microcontroller
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16mhz crystal
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22pf capacitor
Crystal load caps.
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1uF capacitor
UCAP (for AVR USB)
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10uF capacitor
USB connector decoupling.
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10k ohm resistor
AVR reset pull-up.
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5.1k ohm resistor
USB connector CC1 /CC2 pull-down.
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22 ohm resistor.
USB connector A7//B7 to D- and A6/B6to D+.
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7.5k resistor
Transistor base current limmiter.
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50 ohm resistor
LED current limmiter.
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PNP transistor.
For LED current control (via PWM).
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3mm LED
Keycap backlight.
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Mechanical Key Switch (Cherry MX footprint with LED).
USB-C receptacle.
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6-PIN AVR ISP header.
For programming microcontroller.
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PCB
Custom - KiCAD files on gitlab.
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Tact-Switch
For controlling LED brightness.
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