2 layers288.8 × 160.1 mm
GRAM SLIM
GRAMCTRL/GRAM-SLIM
Open source low-profile leverless design with an integrated RP2040.
64 parts24GPL-3.0
2 layers38.1 × 49.2 mm
KeychainBox
quark-works/KeychainBox- Size
- 38.1 × 49.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 60
- Nets
- 107
- Pads
- 278
- Tracks, vias
- 411, 41
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 24 May 2023
- Updated
- 29 Jun 2023
Overview
KeychainBox is an open-source printed circuit board by quark-works, from the quark-works/KeychainBox repository on GitHub, published under the MIT licence. It is a 2-layer board of 38.1 × 49.2 mm with 60 parts on 107 nets, routed with 411 tracks and 41 vias.
It is built around the RP2040, W25Q128JVSIQ and USBLC6-2SC6, with the XC6206-2.8V among its other parts. Its parts include 21 switches, 17 capacitors, 11 resistors, 4 ICs and 3 diodes. It belongs with the RP2040 boards of this library.
Main components
4
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
XC6206-2.8V
SOT-23-3L-40℃~+85℃@(Ta) 1 1uA 2.8V 250mA 350mV@(30mA) 6V Fixed Over Current Protection Positive SOT-23-3L Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSYONGYUTAIVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
Parts
60| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | SW_Push | qw-footprints:SKRRAXE010 | SW2, SW3, SW4, SW5, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21 +4 |
| 10 | 100nF | Capacitor_SMD:C_0402_1005Metric | C3, C5, C6, C11, C12, C13, C14, C15, C16, C17 |
| 4 | 1uF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C4, C10 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R10, R11 |
| 2 | 22pF | Capacitor_SMD:C_0402_1005Metric | C7, C8 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R8, R9 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R2, R3 |
| 2 | Schottky Diode | Diode_SMD:D_SOD-123 | D1, D2 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 10uF | Capacitor_SMD:C_0402_1005Metric | C9 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 470 | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 5.6k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 500 mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | Boot | Button_Switch_SMD:SW_SPST_SKQG_WithStem | SW1 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | JTAG_TC2030 | marbastlib-various:CON_TC2030_outlined | J2 |
| 1 | RP2040 | footprints:RP2040-QFN-56 | U3 |
| 1 | USB C Connector | footprints:TYPE-C_24P_QCHT | J1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U4 |
| 1 | XC6206 | Package_TO_SOT_SMD:SOT-23 | U1 |
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Questions
How big is the KeychainBox PCB?
It measures 38.1 × 49.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the KeychainBox use?
60 parts, built around the RP2040, W25Q128JVSIQ, USBLC6-2SC6 and XC6206-2.8V. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the KeychainBox KiCad files?
From the quark-works/KeychainBox repository on GitHub, at the commit this page was made from: the board is PCB/KeychainBox.kicad_pcb and its schematic PCB/Buttons.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the KeychainBox design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).