2 layers347.7 × 146.6 mm
Mysterium pcb
coseyfannitutti/mysterium
TKL keyboard that can be entirely assembled using only through hole components, including usb type-c
227 parts541GPL-3.0
2 layers314.3 × 143.3 mm
This design may be freely produced, modified, and manufactured for PERSONAL USE ONLY and may not be reproduced in physical form for public sale.
- Size
- 314.3 × 143.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 210
- Nets
- 128
- Pads
- 845
- Tracks, vias
- 2,207, 90
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Aug 2020
- Updated
- 28 Nov 2020
Overview
TH75 is an open-source printed circuit board by ramonimbao, from the ramonimbao/Herringbone repository on GitHub. It is a 2-layer board of 314.3 × 143.3 mm with 210 parts on 128 nets, routed with 2,207 tracks and 90 vias.
It is built around the ATMEGA32A-PU. Its parts include 87 diodes, 6 resistors, 5 capacitors, 2 connectors and 2 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
1README
README.mdHerringbone
Through-hole 75% Keyboard
Partslist
| Count | Part |
|---|---|
| 1 | ATmega32A 40 pin DIP |
| 1 | 40 pin DIP socket |
| 1 | HRO-TYPE-C-M-12 |
| 1 | 500 mA polyfuse |
| 2 | 6mm momentary push buttons |
| 1 | 16 MHz quartz crystal |
| 1 | 10 uF electrolytic capacitor |
| 2 | 100 nF ceramic disk capacitor |
| 2 | 22 pF ceramic disk capacitor |
| 2 | 68 Ω resistor |
| 2 | 1.5 kΩ resistor |
| 2 | 5.1 kΩ resistor |
| 2 | 3.6 V zener diode |
| 84 | universal switching diode |
This design may be freely produced, modified, and manufactured for PERSONAL USE ONLY and may not be reproduced in physical form for public sale.
Parts
210| Qty | Value | Footprint | References |
|---|---|---|---|
| 84 | 1N4148 | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23, D24, D25 +68 |
| 73 | MX-NoLED | MX_Only:MXOnly-1U-NoLED | MX1, MX2, MX10, MX11, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX21, MX22, MX23 +57 |
| 12 | M2 | MountingHole:MountingHole_2.2mm_M2_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8, H9, H10, H12, H13 |
| 5 | MX-NoLED | MX_Only:MXOnly-1.25U-NoLED | MX60, MX75, MX76, MX77, MX88 |
| 4 | MX-NoLED | MX_Only:MXOnly-1.5U-NoLED | MX31, MX44, MX79, MX80 |
| 2 | 1.5k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R1, R2 |
| 2 | 100nF | Capacitor_THT:C_Disc_D4.3mm_W1.9mm_P5.00mm | C3, C4 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C1, C2 |
| 2 | 3.6V | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D2, D3 |
| 2 | 5.1k | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R5, R6 |
| 2 | 75 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | R3, R4 |
| 2 | MX-NoLED | MX_Only:MXOnly-2.25U-NoLED | MX58, MX61 |
| 2 | MX-NoLED | MX_Only:MXOnly-1.75U-NoLED | MX46, MX72 |
| 2 | SW_Push | Button_Switch_THT:SW_PUSH_6mm | SW1, SW2 |
| 1 | 10uF | Capacitor_THT:CP_Radial_D4.0mm_P1.50mm | C5 |
| 1 | 16MHz | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | 500mA | Capacitor_THT:C_Disc_D5.0mm_W2.5mm_P5.00mm | F1 |
| 1 | ATmega32A-PU | Package_DIP:DIP-40_W15.24mm_Socket | U1 |
| 1 | Conn_01x06 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J2 |
| 1 | Conn_02x03_Odd_Even | random-keyboard-parts:Reset_Pretty | J1 |
| 1 | HRO-USB-SPACER | Type-C:HRO-TYPE-C-31-M-12-USB-Spacer | USB1 |
| 1 | HerringbonePattern | HerringbonePatterns:front-pattern | G1 |
| 1 | HerringbonePatternBottom | HerringbonePatterns:main-bottom-pattern | G2 |
| 1 | LED | LED_THT:LED_D3.0mm | D1 |
| 1 | LOGO | Ramon:Signature | H11 |
| 1 | MX-NoLED | MX_Only:MXOnly-6.25U-ReversedStabilizers-NoLED | MX78 |
| 1 | MX-NoLED | MX_Only:MXOnly-2U-NoLED | MX29 |
| 1 | MX-NoLED | MX_Only:MXOnly-ISO-ROTATED-ReversedStabilizers-NoLED | MX85 |
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Questions
How big is the TH75 PCB?
It measures 314.3 × 143.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the TH75 use?
210 parts, built around the ATMEGA32A-PU. 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 TH75 KiCad files?
From the ramonimbao/Herringbone repository on GitHub, at the commit this page was made from: the board is TH75.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the TH75 design in my own project?
Its repository states no licence, so its author keeps all rights: ask ramonimbao before reusing the design.