4 layers130 × 25 mm
Current sense
westonb/little-bee-B1
A high performance current & magnetic field probe
113 parts331CC-BY-SA-4.0
2 layers142.2 × 132.1 mm
Interphase
Durburz/interphase50a mitosis clone with more keys!!1eleven
- Size
- 142.2 × 132.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 115
- Nets
- 123
- Pads
- 475
- Tracks, vias
- 1,223, 108
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 13 Sep 2017
- Updated
- 16 Feb 2023
Overview
Interphase is an open-source printed circuit board by Durburz, from the Durburz/interphase repository on GitHub, published under the MIT licence. It is a 2-layer board of 142.2 × 132.1 mm with 115 parts on 123 nets, routed with 1,223 tracks and 108 vias.
It is built around the MCP1640-I/MC. Its parts include 66 diodes, 33 switches, 4 capacitors, 4 resistors and 4 ICs. It belongs with the keyboards and input boards of this library.
Main components
1README
README.mdinterphase
interphase is a open-source mechanical keyboard. Kudos to reversebias, as I got inspired by his fascinating mitosis keyboard (https://github.com/reversebias/mitosis-hardware). The only problem was the lack of keys for a full german layout + number row.
Therefor, interphase is a kind of ISO-compatible layout with some minor modifications.
Update on battery life: The AAA batteries (Duracell) per keyboard-half are still going strong. After 5 months of heavy usage at work, they only dropped to ~1.4V. Therefor the total lifetime of the batteries will be approximateley 1 - 1.5 years, as the voltage regulator will work down to 0.35V.
As identified in https://github.com/Durburz/interphase-firmware/issues/6 it is strictly necessary to use the C variant of the MCP1640
Parts
115| Qty | Value | Footprint | References |
|---|---|---|---|
| 66 | D | Diodes_SMD:D_MiniMELF | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +50 |
| 30 | MOM-SPST | Misc:CHERRY-MX_double_bo_nodiode | SW2, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25 +14 |
| 2 | 10µF | Capacitors_SMD:C_0805_HandSoldering | C2, C4 |
| 2 | 309K | Resistors_SMD:R_0805 | R2, R7 |
| 2 | 4,7µF | Capacitors_SMD:C_0805_HandSoldering | C1, C3 |
| 2 | 4,7µH | SMD_Packages:SMD-1206_Pol | L1, L2 |
| 2 | 536K | Resistors_SMD:R_0805 | R1, R6 |
| 2 | Core51822B | Misc:Core51822(B) | U1, U4 |
| 2 | MCP1640 | TO_SOT_Packages_SMD:SOT-23-6 | U2, U3 |
| 2 | MOM-SPST | Misc:CHERRY-MX_double_bo_1_5u | SW26, SW31 |
| 1 | Battery_Cell | Misc:KEYSTONE-82_AAA_battery-clip | BT1 |
| 1 | Conn_01x04_Male | Pin_Headers:Pin_Header_Straight_1x04_Pitch2.54mm | J1 |
| 1 | MOM-SPST | Misc:CHERRY-MX_double_bo_2u_nodiode | SW5 |
Questions
How big is the Interphase PCB?
It measures 142.2 × 132.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Interphase use?
115 parts, built around the MCP1640-I/MC. 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 Interphase KiCad files?
From the Durburz/interphase repository on GitHub, at the commit this page was made from: the board is interphase.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interphase 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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