Operacake
About the Operacake PCB
Operacake is an open source PCB design by alexmfz, published on GitHub under the GPL-2.0 license. It is a board measuring 120 × 75 mm, with 152 components from 49 distinct parts.
Other key parts include the SKY13350, SKY13322, RFFC5072, 74AHC1G08 and SKY13317. By type, the board carries 35 capacitors, 30 test points, 20 resistors, 16 ICs, 10 diodes and 7 connectors.
From the project
Copyright 2012 - 2016 Great Scott Gadgets
Copyright 2012 - 2016 Great Scott Gadgets
This is a free hardware design; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.
This design is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
Main components on the Operacake
Operacake bill of materials (BOM)
152 components, 49 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SKY13350 MASWSS0129 | QFN12-3 | U1 |
| 1 | SKY13350 SKY13322 | SKY13322-375LF | U2 |
| 1 | SKY13322 | SKY13322-375LF | U3 |
| 1 | RFFC5072 PCA9557 | TSSOP16 | U4 |
| 1 | SKY13350 TC7MBL3245CFT | TSSOP20 | U5 |
| 4 | SKY13350 74LVC1G58 | SOT363 | U6, U7, U10, U11 |
| 1 | 74AHC1G08 | SOT353-1 | U8 |
| 1 | SKY13317 74AHC1G08 | SOT353-1 | U9 |
| 1 | SKY13317 74LVC1G58 | SOT363 | U12 |
| 1 | MGA-81563 74LVC1G58 | SOT363 | U13 |
| 1 | SKY13317 74AHC1G02 | SOT353-1 | U14 |
| 1 | GSG-74HC04 74AHC1G02 | SOT353-1 | U15 |
| 1 | GSG-74HC08 74LVC1G19 | SOT363 | U16 |
| 1 | CONN_02X20 | HEADER-2x20-REVERSE | J1 |
| 1 | 900MHZ-F-ANTENNA CONN_02X20 | HEADER-2x20-REVERSE | J2 |
| 1 | 1V8 ADDRESS | HEADER-2x3 | P1 |
| 1 | CTOUT_4 BASEBAND | HEADER-2x8 | P9 |
| 1 | GPIO | HEADER-2x11 | P20 |
| 1 | I2S | HEADER-2x13 | P22 |
| 1 | SD | HEADER-2x11 | P28 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 18 | LED | 0603D | DA0, DAG1, DAG2, DAG3, DAG4, DAY1, DAY2, DAY3 +10 |
| 6 | MOUNTING_HOLE | HOLE126MIL-COPPER | MH1, MH2, MH3, MH4, MH5, MH6 |
| 10 | GSG-RF-CONN | GSG-SMA-73251-2120 | PA0, PA1, PA2, PA3, PA4, PB0, PB1, PB2 +2 |
| 30 | CONN_1 | TESTPOINT-50MIL | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8 +22 |
| 4 | GSG-DIODE-TVS-BI | 0402 | D1, D7, D9, D10 |
| 1 | USBLED1 GSG-DIODE-TVS-BI | 0402 | D2 |
| 1 | USBLED0 GSG-DIODE-TVS-BI | 0402 | D3 |
| 1 | LED1 GSG-DIODE-TVS-BI | 0402 | D4 |
| 1 | LED2 GSG-DIODE-TVS-BI | 0402 | D5 |
| 1 | LED3 GSG-DIODE-TVS-BI | 0402 | D6 |
| 1 | 1V8LED GSG-DIODE-TVS-BI | 0402 | D8 |
| 12 | 33PF 100nF | 0402 | C1, C3, C5, C7, C10, C11, C24, C29 +4 |
| 8 | 10NF 100nF | 0402 | C2, C4, C6, C9, C23, C25, C28, C31 |
| 4 | 47PF 100nF | 0402 | C8, C26, C27, C32 |
| 1 | 330PF 100nF | 0402 | C12 |
| 1 | 330PF 33pF | 0402 | C13 |
| 1 | 8P2 33pF | 0402 | C14 |
| 1 | 180PF 33pF | 0402 | C15 |
| 3 | 33PF 33pF | 0402 | C16, C19, C22 |
| 3 | 10NF 33pF | 0402 | C17, C18, C20 |
| 1 | 47PF 33pF | 0402 | C21 |
| 2 | 470 330 | 0603 | R1, R2 |
| 1 | 22K 330 | 0603 | R3 |
| 1 | 51K 330 | 0603 | R4 |
| 2 | 4K7 330 | 0603 | R5, R6 |
| 1 | 10K 1k8 | 0603 | R7 |
| 1 | 1k8 | 0603 | R8 |
| 8 | 10k | 0603 | R9, R10, R11, R12, R13, R18, R19, R20 |
| 4 | 4K7 10k | 0603 | R14, R15, R16, R17 |
Operacake design files
The KiCad project lives in the alexmfz/hackrf repository on GitHub; these links point at the commit this page was built from.
Operacake: common questions
How big is the Operacake PCB?
The Operacake measures 120 × 75 mm and is 1.6002 mm thick.
How many components are on the Operacake?
152 components, from 49 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 Operacake design files?
From the alexmfz/hackrf repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Operacake design in my own project?
Yes, under the terms of its GPL-2.0 license, which alexmfz chose for the repository.
