Thumbee
About the Thumbee PCB
Thumbee is an open source PCB design by fifteenhex, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 38 × 38 mm, with 65 components from 28 distinct parts.
Other key parts include the msc313e, spinor, ht42b534-1, RT8059GJ5 and xc6204xxxxMR. By type, the board carries 32 capacitors, 19 resistors, 7 ICs, 3 inductors, 2 connectors and 1 module.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
MStar MSC313E SoC breakout
This is dead. Look at https://github.com/fifteenhex/breadbee instead. It actually works. :D
Rough layout. Minimal decoupling caps because of limited space. Test to see if two layers works. May move to some 0402 passives if not.
Pinout foobar #1. USB ground isn't wired up because of a difference in the pin number of the symbol and the footprint. Fixed by shorting the id pin to ground next to it.
Main components on the Thumbee
Thumbee bill of materials (BOM)
65 components, 28 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | msc313e | QFN-80_EP_8x8_Pitch0.35mm | U1 |
| 1 | spinor | wson8-8x6mm | U2 |
| 1 | ht42b534-1 | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 3 | RT8059GJ5 | TSOT-23-5 | U4, U5, U6 |
| 1 | xc6204xxxxMR | TSOT-23-5 | U7 |
| 1 | thumbee | thumbee | MOD1 |
| 1 | Crystal | Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | Conn_02x05_Odd_Even | PinHeader_2x05_P1.00mm_Vertical_SMD | J11 |
| 1 | USB_B_Mini | USB-MICRO-B | J12 |
| 3 | L | CD32 | L1, L2, L3 |
| 15 | C | C_0603_1608Metric | C1, C18, C19, C20, C21, C22, C24, C25 +7 |
| 5 | 10uf | C_0603_1608Metric | C2, C9, C12, C15, C16 |
| 2 | 1uf | C_0603_1608Metric | C3, C17 |
| 2 | 47pf | C_0603_1608Metric | C4, C5 |
| 3 | 4.7uf | C_0603_1608Metric | C6, C10, C13 |
| 1 | 470nf | C_0603_1608Metric | C7 |
| 3 | 22pf | C_0603_1608Metric | C8, C11, C14 |
| 1 | 2.2uf | C_0603_1608Metric | C23 |
| 2 | 33 | R_0603_1608Metric | R1, R2 |
| 1 | 10k | R_0603_1608Metric | R3 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 75k | R_0603_1608Metric | R4 |
| 2 | 100k | R_0603_1608Metric | R5, R18 |
| 1 | 120k | R_0603_1608Metric | R6 |
| 1 | 57k | R_0603_1608Metric | R7 |
| 1 | 33k | R_0603_1608Metric | R8 |
| 1 | 7.5k | R_0603_1608Metric | R9 |
| 8 | R | R_0603_1608Metric | R10, R11, R12, R13, R14, R15, R16, R17 |
| 1 | 0 | R_0603_1608Metric | R19 |
Thumbee design files
The KiCad project lives in the fifteenhex/thumbee repository on GitHub; these links point at the commit this page was built from.
- Layoutthumbee.kicad_pcb
Thumbee: common questions
How big is the Thumbee PCB?
The Thumbee measures 38 × 38 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Thumbee?
65 components, from 28 distinct parts. The full bill of materials is listed on this page.
Where can I download the Thumbee design files?
From the fifteenhex/thumbee repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Thumbee design in my own project?
Yes, under the terms of its GPL-3.0 license, which fifteenhex chose for the repository.
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