2 layers133 × 114.7 mm
2 layers219.4 × 78 mm
Keyvas
efremovich/keyvasПроект клавиатуры для Василисы
- Size
- 219.4 × 78 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 137
- Nets
- 107
- Pads
- 941
- Tracks, vias
- 1,575, 239
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 Jun 2025
- Updated
- 5 Jul 2026
Overview
Keyvas is an open-source printed circuit board by efremovich, from the efremovich/keyvas repository on GitHub. It is a 2-layer board of 219.4 × 78 mm with 137 parts on 107 nets, routed with 1,575 tracks and 239 vias.
It is built around the E73-2G4M08S1C, TP4054 and USBLC6-2SC6, with the XC6220B331MR-G and AO3407 among its other parts. Its parts include 51 diodes, 49 switches, 9 resistors, 5 capacitors and 4 ICs.
Main components
5
E73-2G4M08S1C
SMD,18x13mm-103dBm、-95dBm -40℃~+85℃ 120m 17.05mA 3.3V 8.27mA 8dBm Bluetooth 5.0、Bluetooth 4.2 PWM、SPI、ADC、USB、I2C、ISP、JTAG、DMA nRF52840 Chip SMD,18x13mm Bluetooth Modules ROHSChengdu Ebyte Elec TechBluetooth Modules
TP4054
SOT-23-5L-40℃~+85℃ 1 25uA 4.2V 4.2V~6.5V 500mA Charging IC Lithium Battery Not supported 恒流充电、恒压充电、涓流充电、自动再充电、充电终止、可编程充电电流、软启动、欠压锁定 SOT-23-5L Battery Management ROHSUMWBattery Management
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)XC6220B331MR-G
SOT-25-40℃~+85℃ 1 1A 3.3V 50dB@(1kHz) 655mV@(1A) 6V 8uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Output discharge Positive SOT-25 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTorex SemiconductorVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AO3407
SOT-23-55℃~+150℃ 1 P-Channel 1.4W 1V 260pF 30V 37pF 4.1A 75mΩ@4.5V P-Channel ±20V SOT-23 MOSFETs ROHSBORNMOSFETs
README
READMEКлавиатура для Василисы
https://monacokeys.de/en/products/niuniu-40-40-low-profile-mechanical-keyboard-kit
Плагин для генерации https://github.com/adamws/kicad-kbplacer
KLE
kle.klava.org
Parts
137| Qty | Value | Footprint | References |
|---|---|---|---|
| 48 | D_Small | kbd:D3_SMD | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +32 |
| 48 | KEYSW | kbd:SW_Gateron_LowProfile_THT | K1, K2, K10, K11, K12, K13, K14, K15, K16, K17, K18, K19, K20, K21, K22, K23 +32 |
| 8 | MountingHole | kbd:Hole 3,2 | H1, H2, H3, H4, H5, H6, H7, H8 |
| 3 | , , | ||
| 2 | 10pF | kbd:C_0603_1608Metric_REV | C1, C2 |
| 2 | 1K | kbd:R_0603_1608Metric_REV | R7, R9 |
| 2 | 4.7uF | kbd:C_0603_1608Metric_REV | C4, C5 |
| 2 | 5.1K | kbd:R_0603_1608Metric_REV | R4, R5 |
| 1 | 100K | kbd:R_0603_1608Metric_REV | R6 |
| 1 | 1M | kbd:R_0603_1608Metric_REV | R10 |
| 1 | 1N5819 | kbd:D_SOD-323_HandSoldering_REV | D31 |
| 1 | 1nF | kbd:C_0603_1608Metric_REV | C3 |
| 1 | 2M | kbd:R_0603_1608Metric_REV | R3 |
| 1 | 32.768kHz | kbd:Crystal_SMD_MicroCrystal_CM9V-T1A-2Pin_1.6x1.0mm_HandSoldering_REV | X1 |
| 1 | 500mA | kbd:Fuse_1206_3216Metric_REV | F1 |
| 1 | 806K | kbd:R_0603_1608Metric_REV | R2 |
| 1 | AO3407 | kbd:SOT-23_Handsoldering_REV | Q2 |
| 1 | BLUE | kbd:LED_0603_1608Metric_REV | D36 |
| 1 | Conn_01x02_Female | kbd:Battery_TH | J4 |
| 1 | E73-2G4M08S1C | E73-2G4M08S1C-master:E73-2G4M08S1C-52840 | U5 |
| 1 | RED | kbd:LED_0603_1608Metric_REV | D35 |
| 1 | RPROG | kbd:R_0603_1608Metric_REV | R8 |
| 1 | SWD | kbd:connector_swd_REV | J2 |
| 1 | SW_PUSH | kbd:SW_SPST_EVQP7C_REV | RSW1 |
| 1 | SW_SPDT | kbd:SW_SPDT+H-MSK12C01_hor(7pin_SMD)_REV | SW31 |
| 1 | TP4054 | kbd:SOT-23-5_HandSoldering_REV | U3 |
| 1 | USB-C Conn | kbd:TYPE-C-31-M-13C | J3 |
| 1 | USBLC6-2SC6 | kbd:SOT-23-6_Handsoldering_REV | U4 |
| 1 | XC6220B331MR-G | kbd:SOT-23-5_HandSoldering_REV | U2 |
The 136 most common of 137 parts.
Questions
How big is the Keyvas PCB?
It measures 219.4 × 78 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyvas use?
137 parts, built around the E73-2G4M08S1C, TP4054, USBLC6-2SC6 and XC6220B331MR-G. 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 Keyvas KiCad files?
From the efremovich/keyvas repository on GitHub, at the commit this page was made from: the board is keyvas.kicad_pcb and its schematic keyvas.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyvas design in my own project?
Its repository states no licence, so its author keeps all rights: ask efremovich before reusing the design.
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