Cameo
About the Cameo PCB
Cameo is an open source PCB design by stepleton, published on GitHub under the Unlicense license. It is a board measuring 55 × 35 mm, with 56 components from 9 distinct parts.
Other key parts include the TXS0108E_PW_20. By type, the board carries 32 jumpers, 17 resistors, 4 capacitors, 2 ICs and 1 connector.
From the project
3.3V ⇄ 5V level adapter for PocketBeagle, and an application or two
is a peripheral cape circuit board that allows the PocketBeagle single-board computer (which uses 3.3V digital signals) to interface with 5V digital logic. It is built around two Texas Instruments TXS0108EPWR or TXB0108PWR 8-bit bidirectional voltage level translator ICs. Sixteen digital I/O signal lines are available.
Cameo is optimised for applications that take advantage of the two PRU-ICSS real-time coprocessors built into the chip-like hybrid circuit that powers the PocketBeagle (a TI AM3358 SoC/Octavo OSD3358 SiP). The digital I/O lines that pass through Cameo include all fourteen…
Main components on the Cameo
Cameo bill of materials (BOM)
56 components, 9 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | TXS0108E_PW_20 | TXS0108EPWR | U1, U2 |
| 1 | CONN_02X13 | Pin_Header_Straight_2x13 | P3 |
| 16 | Jumper_NO_Small | R_0603_HandSoldering | JP1, JP2, JP16, JP19, JP20, JP21, JP22, JP23 +8 |
| 16 | Jumper_NC_Small | R_0603_HandSoldering | JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10 +8 |
| 4 | 0.1 | C_0603_HandSoldering | C1, C2, C3, C4 |
| 1 | 240K 10K | R_0603_HandSoldering | R1 |
| 4 | 10K R_Small | R_0603_HandSoldering | R2, R3, R14, R17 |
| 1 | 120 R_Small | R_0603_HandSoldering | R4 |
| 11 | R_Small | R_0603_HandSoldering | R5, R6, R7, R8, R9, R10, R11, R12 +3 |
Cameo design files
The KiCad project lives in the stepleton/cameo repository on GitHub; these links point at the commit this page was built from.
Cameo: common questions
How big is the Cameo PCB?
The Cameo measures 55 × 35 mm and is 1.6 mm thick.
How many components are on the Cameo?
56 components, from 9 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 Cameo design files?
From the stepleton/cameo repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Cameo design in my own project?
Yes, under the terms of its Unlicense license, which stepleton chose for the repository.