CADPad
About the CADPad PCB
CADPad is an open source PCB design by Lumethra, published on GitHub. It is a 2-layer board measuring 175.4 × 142.7 mm, with 97 components from 16 distinct parts.
Other key parts include the NICE_NANO_V2, SL2.1s, DW01A and MCP73831T-2ACI/OT. By type, the board carries 30 diodes, 27 switches, 15 resistors, 14 capacitors, 4 ICs and 1 transistor.
It belongs with the keyboards, power & battery and iot & wireless designs in this gallery.
From the project
SHHH, this is a gift, dont spoiler it, SHHHH. But what exactly is this?? Good question. Its a keyboard. Again. Wait, what does again mean, well its my second one. My Auth75 was my first one. Back to what this is. Its technically a keyboard, but I would rather call it a Macropad,
SHHH, this is a gift, dont spoiler it, SHHHH. But what exactly is this?? Good question. Its a keyboard. Again. Wait, what does again mean, well its my second one. My Auth75 was my first one. Back to what this is. Its technically a keyboard, but I would rather call it a Macropad, because its firmwares purpose is to make 3d modeling in Onshape easier. This is also why its called a CADPad, not Catpad (meow), CADPad. C A D, like CAD-design.
Main components on the CADPad
CADPad bill of materials (BOM)
97 components, 16 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | NICE_NANO_V2 Nice_Nano_V2 | Nice_Nano_V2 | U1 |
| 1 | SL2.1s SL2.1S CoreChips(和芯润德) | SSOP-16_L4.6-W2.6-P0.53-LS4.0-BL | U2 |
| 1 | DW01A DW01A_C351410 PUOLOP(迪浦) | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL | U3 |
| 1 | MCP73831T-2ACI/OT MICROCHIP(美国微芯) | SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BL | U4 |
| 1 | FS8205A FS8205A_C2830320 TECH PUBLIC(台舟) | SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | Q1 |
| 1 | S2B-PH-SM4-TB(LF)(SN) S2B-PH-SM4-TB JST | CONN-SMD_P2.00_S2B-PH-SM4-TB-LF-SN | CN1 |
| 27 | C2803348 ~ | SW_Hotswap_Kailh_MX | S1, S2, S3, S4, S5, S6, S7, S8 +19 |
| 5 | TYPE-C 16PIN 2MD(073) TYPE-C 16PIN 2MD SHOU HAN(首韩) | USB-C-SMD_TYPE-C-6PIN-2MD-073 | USB1, USB2, USB3, USB4, USB5 |
| 30 | C81598 ~ | D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8 +22 |
| 8 | 1UF 1uf | C_0603_1608Metric | C1, C2, C3, C4, C5, C6, C8, C10 |
| 4 | 100NF 100nf | C_0603_1608Metric | C7, C9, C11, C12 |
| 2 | 4.7UF 4.7uF | C_0603_1608Metric | C13, C14 |
| 3 | 5.1K 5.1k | R_0603_1608Metric | R1, R2, R13 |
| 8 | 56K 56k | R_0603_1608Metric | R3, R4, R5, R6, R7, R8, R9, R10 |
| 1 | 100 | R_0603_1608Metric | R11 |
| 3 | 1k | R_0603_1608Metric | R12, R14, R19 |
CADPad design files
The KiCad project lives in the Lumethra/CADPad repository on GitHub; these links point at the commit this page was built from.
- LayoutPCB/CADPad.kicad_pcb
- SchematicPCB/CADPad.kicad_sch
- BOMProduction/bom.csv
CADPad: common questions
How big is the CADPad PCB?
The CADPad measures 175.4 × 142.7 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the CADPad?
97 components, from 16 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the CADPad design files?
From the Lumethra/CADPad repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the CADPad design in my own project?
The repository has no license, so all rights stay with Lumethra. Use it as a reference, and ask the author before reusing the design.
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