Expansion
About the Expansion PCB
Expansion is an open source PCB design by kuku-199, published on GitHub. It is a 2-layer board measuring 52 × 43.4 mm, with 52 components from 33 distinct parts.
Other key parts include the USB_C_16P, CP2102N-AXX-XQFN28, BMI270 and AMS1117. By type, the board carries 20 resistors, 12 capacitors, 9 diodes, 6 ICs, 4 connectors and 1 inductor.
From the project
STM32 Core board
1 USB support PD 1 USART to USB port 1 IMU(BMI270) 1 40P header
⚠️Please read the PCB Engineering Instructions pdf file - 📖Engineering declaration 👓The whole project uses a two-layer process. If you don't have kicad installed, you can directly view Bom for welding. Gerber files are also in HDK - Commander-bom - Expansion-bom Continuous update, currently replenishing Demo.📃 welcome to submit your questions, and I also hope you can submit your own updates to the project📡 I E-mail2981263629@qq.com,if you have questions or new idea can send an email to me⌨ ❗ ❗ ❗ BUG of IO silk-screen in early…
Main components on the Expansion
Expansion bill of materials (BOM)
52 components, 33 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ~ | TSOT-23-8 | U1 |
| 2 | USB_C_16P | Typc-C-16P | U2, U3 |
| 1 | CP2102N-AXX-XQFN28 CP2102N-Axx-xQFN28 | QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U4 |
| 1 | BMI270 | XDCR_BMI270 | U5 |
| 1 | AMS1117 | SOT-89-3 | U6 |
| 1 | CONN_02X20_ODD_EVEN Conn_02x20_Odd_Even | PinHeader_2x20_P2.54mm_Vertical_SMD | J2 |
| 1 | CONN_01X01_PIN Conn_01x01_Pin | SolderWirePad_1x01_SMD_1x2mm | J3 |
| 1 | ~ | Afflatus-outline | J4 |
| 1 | ~ | BTB_0.8_2X20P_M | j1 |
| 1 | LESD3Z5.0CMT1G | D_SOD-323 | D1 |
| 4 | ESD9B5.0ST5G | D_SOD-923 | D2, D3, D4, D5 |
| 1 | 1N5819WS | D_SOD-123 | D6 |
| 1 | Blue | LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D7 |
| 1 | Yellow | LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D8 |
| 1 | Yllow | LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D9 |
| 1 | L | L_Sunlord_MWSA0402S | L1 |
| 5 | 100NF 100nF | C_0402_1005Metric | C1, C6, C7, C9, C10 |
| 3 | 22UF 22uF | C_0603_1608Metric | C2, C3, C14 |
| 2 | 10UF 10uF | C_0603_1608Metric | C4, C5 |
| 1 | 1UF 1uF | C_0402_1005Metric | C8 |
Show 13 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 10UF 10uF | C_0402_1005Metric | C13 |
| 3 | 22R | R_0402_1005Metric | R1, R20, R21 |
| 2 | 100K | R_0402_1005Metric | R2, R3 |
| 1 | 51K | R_0402_1005Metric | R4 |
| 1 | 41.2K | R_0402_1005Metric | R5 |
| 1 | 13K | R_0402_1005Metric | R6 |
| 2 | 0R | R_0402_1005Metric | R7, R13 |
| 1 | 10K | R_0402_1005Metric | R8 |
| 4 | 5.1K | R_0402_1005Metric | R9, R10, R11, R12 |
| 2 | 1K | R_0402_1005Metric | R14, R15 |
| 1 | 200K | R_0402_1005Metric | R18 |
| 1 | 40.2K | R_0402_1005Metric | R19 |
| 1 | 3.3K | R_0402_1005Metric | R22 |
Expansion design files
The KiCad project lives in the kuku-199/Afflatus repository on GitHub; these links point at the commit this page was built from.
Expansion: common questions
How big is the Expansion PCB?
The Expansion measures 52 × 43.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Expansion?
52 components, from 33 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 Expansion design files?
From the kuku-199/Afflatus 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 Expansion design in my own project?
The repository has no license, so all rights stay with kuku-199. Use it as a reference, and ask the author before reusing the design.
