Chai45HE
About the Chai45HE PCB
Chai45HE is an open source PCB design by gohanda11, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 238.1 × 76.2 mm, with 174 components from 19 distinct parts.
Other key parts include the USBLC6-2SC6, TLV75733PDBV, XC6206P332MR-G and AT32F405RCT7. By type, the board carries 109 capacitors, 4 ICs, 4 resistors, 2 connectors, 2 switches and 1 crystal.
From the project
Chai45HE is a 40% Hall-effect keyboard based on the HE60 project. This is a modified version that adapts the original 60% design to a compact 40% layout.
Chai45HE is a 40% Hall-effect keyboard based on the HE60 project. This is a modified version that adapts the original 60% design to a compact 40% layout.
- 40% compact layout - Hall-effect magnetic switches support - Based on HE60's proven design and technology - Custom PCB design files included
1. firmware.bin をダウンロードします。 2. 基板裏側の BOOT ボタンを長押ししながらUSBケーブルを接続し、Bootloader Modeに入ります。 3. WebDFU にアクセスし、DFU in FS mode に接続します。 4. Firmware Download セクションでダウンロードした firmware.bin ファイルを選択します。 5. Download ボタンを押して書き込みを実行します。
Main components on the Chai45HE
Chai45HE bill of materials (BOM)
174 components, 19 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-2SC6 | SOT-23-6 | U1 |
| 1 | TLV75733PDBV | SOT-23-5 | U2 |
| 1 | XC6206P332MR-G | SOT-23-3 | U3 |
| 1 | AT32F405RCT7 Artery Technology | LQFP-64_10x10mm_P0.5mm | U4 |
| 1 | X322512MSB4SI | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | TYPE-C-31-M-12 | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | JST_SH | JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 6 | SN74LV4051A | TSSOP-16_4.4x5mm_P0.65mm | AM1, AM2, AM3, AM4, AM5, AM6 |
| 1 | BSMD0805-050-24V | Fuse_0805_2012Metric | F1 |
| 45 | MT9102ET | SOT-23-3 | HE1, HE2, HE3, HE4, HE5, HE6, HE7, HE8 +37 |
| 2 | TS-1187A-B-A-B | SW_Push_1P1T_XKB_TS-1187A | SW1, SW2 |
| 56 | 100n | C_0402_1005Metric | C1, C3, C5, C7, C9, C11, C13, C15 +48 |
| 45 | 4.7n | C_0402_1005Metric | C2, C4, C6, C8, C10, C12, C14, C16 +37 |
| 4 | 2.2u | C_0603_1608Metric | C148, C149, C150, C151 |
| 2 | 30p | C_0603_1608Metric | C152, C153 |
| 1 | 10u | C_0603_1608Metric | C157 |
| 1 | 1u | C_0603_1608Metric | C159 |
| 2 | 5.1k | R_0402_1005Metric | R1, R2 |
| 2 | 12k | R_0402_1005Metric | R3, R4 |
Chai45HE design files
The KiCad project lives in the gohanda11/Chai45HE repository on GitHub; these links point at the commit this page was built from.
- LayoutChai45HE/Chai45HE.kicad_pcb
- SchematicChai45HE/Chai45HE.kicad_sch
Chai45HE: common questions
How big is the Chai45HE PCB?
The Chai45HE measures 238.1 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Chai45HE?
174 components, from 19 distinct parts. The full bill of materials is listed on this page.
Where can I download the Chai45HE design files?
From the gohanda11/Chai45HE repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Chai45HE design in my own project?
Yes, under the terms of its GPL-3.0 license, which gohanda11 chose for the repository.