

AmethystKeyboard
- Size
- 235.2 × 95.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 82
- Pads
- 387
- Tracks, vias
- 303, 7
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 25 Feb 2024
- Updated
- 9 Dec 2024
Overview
AmethystKeyboard is an open-source printed circuit board by QuickPurpleFox, from the QuickPurpleFox/Amethyst32 repository on GitHub, published under the MIT licence. It is a 2-layer board of 235.2 × 95.1 mm with 99 parts on 82 nets, routed with 303 tracks and 7 vias.
It is built around the ATMEGA328P-PU and 74HC595. Its parts include 47 diodes, 47 switches, 2 ICs, 1 capacitor and 1 resistor. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
README
README.mdAmethyst32
6502 based computer with 32kb of ram memory, with video based on tms9918 and sound on ym3812
License
Authors
- @QuickPurpleFox | Daniel K
supported by

Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 47 | Diode | ScottoKeebs_Components:Diode_DO-35 | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +31 |
| 46 | Keyswitch | ScottoKeebs_MX:MX_PCB_1.00u | S1, S2, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20, S21, S22, S23 +30 |
| 1 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U2 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | C_Polarized_Small | Capacitor_THT:CP_Radial_D5.0mm_P2.50mm | C1 |
| 1 | Conn_01x10 | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J1 |
| 1 | Keyswitch | ScottoKeebs_MX:MX_PCB_2.00u | S37 |
| 1 | Resistor | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
Questions
How big is the AmethystKeyboard PCB?
It measures 235.2 × 95.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the AmethystKeyboard use?
99 parts, built around the ATMEGA328P-PU and 74HC595. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the AmethystKeyboard KiCad files?
From the QuickPurpleFox/Amethyst32 repository on GitHub, at the commit this page was made from: the board is Amethyst32Keyboard/AmethystKeyboard.kicad_pcb and its schematic Amethyst32Keyboard/AmethystKeyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AmethystKeyboard design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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