2 layers362 × 20 mm
Front plate
ayan20985/wavelength-keyboard
the wavelength keyboard is a custom ortholinear bluetooth mechanical keyboard
30 parts1MIT
2 layers362 × 150.6 mm
Wavelength v0.0
ayan20985/wavelength-keyboard1the wavelength keyboard is a custom ortholinear bluetooth mechanical keyboard
- Size
- 362 × 150.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 731
- Nets
- 567
- Pads
- 2,395
- Tracks, vias
- 5,858, 536
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 Mar 2025
- Updated
- 28 Jul 2025
Overview
Wavelength v0.0 is an open-source printed circuit board by ayan20985, from the ayan20985/wavelength-keyboard repository on GitHub, published under the MIT licence. It is a 2-layer board of 362 × 150.6 mm with 731 parts on 567 nets, routed with 5,858 tracks and 536 vias.
It is built around the BQ24075RGT, CSD87313DMS and JS202011AQN, with the 1N4148WS and ESD9B5.0ST5G among its other parts. Its parts include 231 resistors, 225 diodes, 108 transistors, 108 switches and 6 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
Main components
5
BQ24075RGT
QFN-16-EP(3x3)-40℃~+125℃ 1.5A 4.2V 4.35V~6.4V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery ManagementCSD87313DMS
WSON-8(3.3x3.3)-55℃~+150℃ 1.25V 17A 2 N-Channel 200pF 28nC@4.5V 30V 365pF 4.29nF 5.5mΩ@4.5V Common Drain N-Channel WSON-8(3.3x3.3) MOSFETs ROHSTexas InstrumentsMOSFETs
JS202011AQN
插件-40℃~+85℃ 300mA 5,000 cycles 6V DPDT PC Pin Rectangular Columnar 插件 Slide Switches ROHSC&KSlide Switches
1N4148WS
SOD-3231.25V@150mA 100V 150mA 1uA@75V 200mW 2A 4ns Independent SOD-323 Switching Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Switching Diodes
ESD9B5.0ST5G
SOD-923(0402)-55℃~+125℃ 1 10V 15pF 5V 8.4V 80W@8/20us 80nA 8A@8/20us Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 SOD-923(0402) ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
README
README.mdwavelength-keyboard
A custom ortholinear bluetooth mechanical keyboard with a left-sided numpad. Supports low-profile Kalih Choc(olate) switches and has additional dev-connectors for accessing the MCU or for other projects such as the analog gauge based task manager, etc.
keyboard layout
I am using ortholinear as it is more comfortable and natural to type on, I am also using a left-sided numpad making mouse positionining more comfortable. Using KLE (keyboard layout editor) you can open the layout.json file to edit/view it to your needs.
hardware
I have chosen the nrf52840 MCU as it has abundant GPIO pins for all the rows and columns in my switch matrix, it also has built-in bluetooth support. Regarding the I have also chosen the Choc v1 switches as they are low profile and have hot-swap sockets.
Parts
731| Qty | Value | Footprint | References |
|---|---|---|---|
| 110 | LED | LED_SMD:LED_0603_1608Metric | D11, D108, D114, D116, D129, D131, D133, D135, D137, D139, D141, D143, D145, D147, D149, D151 +94 |
| 108 | 10 | Resistor_SMD:R_0603_1608Metric | R101, R103, R105, R106, R109, R111, R113, R115, R117, R119, R121, R123, R125, R127, R129, R131 +92 |
| 108 | 15 | Resistor_SMD:R_0603_1608Metric | R100, R102, R104, R108, R110, R112, R114, R116, R118, R120, R122, R124, R126, R128, R130, R132 +92 |
| 108 | 1N4148WS | dao-choc-ble:D_SOD-323 | D10, D110, D112, D123, D130, D132, D134, D136, D138, D140, D142, D144, D146, D148, D150, D152 +92 |
| 108 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q1, Q10, Q11, Q100, Q101, Q102, Q103, Q105, Q106, Q107, Q108, Q109, Q115, Q116, Q117, Q118 +92 |
| 108 | KEY_SWITCH | dao-choc-ble:Kailh_PG1350_hotswap | K1, K100, K102, K104, K106, K108, K115, K121, K122, K123, K124, K125, K126, K127, K128, K129 +92 |
| 7 | ~ | keyswitches:Stabilizer_MX_2u | STAB1, STAB2, STAB3, STAB4, STAB5, STAB6, STAB7 |
| 6 | 750 | footprints:R_0603_1608Metric | R1, R2, R3, R4, R5, R6 |
| 6 | LED | footprints:LED_1206_3216Metric | D1, D2, D3, D4, D5, D6 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 3 | LOGO | footprints:LOGO | G***, G***, G*** |
| 2 | 1.5k | Resistor_SMD:R_0603_1608Metric | R14, R15 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric | R9, R12 |
| 2 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C21, C22 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R7, R8 |
| 2 | DIN41612_02x05_AB_EvenPins | Connector_DIN:DIN41612_B3_2x5_Male_Horizontal_THT | J1, J4 |
| 2 | OSHW-logo | dao-choc-ble:OSHW-logo | LOGO2, LOGO2 |
| 1 | footprints: | ||
| 1 | 0.1uF | Capacitor_SMD:C_0201_0603Metric | C19 |
| 1 | 1.18k | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R13 |
| 1 | 1uF | Capacitor_SMD:C_0201_0603Metric | C20 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | BQ24075 | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.68x1.68mm_ThermalVias | U5 |
| 1 | BQ297xy | Package_SON:WSON-6_1.5x1.5mm_P0.5mm | U4 |
| 1 | CSD87313DMS | footprints CSD8731:DMS0008A | U6 |
| 1 | Conn_01x02 | Connector_JST:JST_XH_S2B-XH-A_1x02_P2.50mm_Horizontal | J3 |
| 1 | DIN41612_02x32_AB | Connector_DIN:DIN41612_B_2x32_Male_Horizontal_THT | J5 |
| 1 | ESD9B5.0ST5G | Diode_SMD:D_SOD-923 | D6 |
| 1 | Fuse | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | JS202011AQN | footprints SPDT:JS202011AQN | U2 |
| 1 | TPD4EUSB30 | Package_SON:USON-10_2.5x1.0mm_P0.5mm | U3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4085 | J2 |
| 1 | nRF52840 | Package_DFN_QFN:Nordic_AQFN-73-1EP_7x7mm_P0.5mm | U1 |
| 1 | ~ | footprints:front plate | FRONT_PLATE1 |
| 1 | ~ | keyswitches:Stabilizer_MX_6u | STAB8 |
The 707 most common of 731 parts.
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Questions
How big is the Wavelength v0.0 PCB?
It measures 362 × 150.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wavelength v0.0 use?
731 parts, built around the BQ24075RGT, CSD87313DMS, JS202011AQN and 1N4148WS. 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 Wavelength v0.0 KiCad files?
From the ayan20985/wavelength-keyboard repository on GitHub, at the commit this page was made from: the board is hardware/wavelength v0.0.kicad_pcb and its schematic hardware/Daughter Board/front plate.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wavelength v0.0 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).