2 layers21.8 × 16.3 mm
Fido2-lpc55
Nitrokey/nitrokey-3a-nfc-lpc55-hardware
Nitrokey 3 USB-A NFC LPC55 hardware
39 parts23CERN-OHL-S-2.0
4 layers23.4 × 12 mm
Solo2
solokeys/solo2-hw187Hardware schematic and layout for Solo 2
- Size
- 23.4 × 12 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 41
- Nets
- 98
- Pads
- 268
- Tracks, vias
- 771, 79
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 25 Apr 2021
- Updated
- 18 Apr 2022
Overview
Solo2 is an open-source printed circuit board by solokeys, from the solokeys/solo2-hw repository on GitHub. It is a 4-layer board of 23.4 × 12 mm with 41 parts on 98 nets, routed with 771 tracks and 79 vias.
It is built around the LPC55S69JEV98K, FM11NC08I and GD25Q16CEIGR, with the FSUSB42MUX, GG040205100N2P and PUSB3TB6AZ among its other parts. Its parts include 10 resistors, 9 capacitors, 5 diodes, 2 inductors and 1 IC. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
7
LPC55S69JEV98K
VFBGA-98-40℃~+105℃ 1.8V~3.6V 150MHz 16bit 32 Bit 320KB 64 640KB ARM Cortex-M33 Built-in FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Built-in general-purpose timer、Hardware CRC、Calendar function、Built-in temperature sensor、True random number generator (TRNG)、Storage encryption、Window watchdog (WWDG) VFBGA-98 Microcontrollers (MCU/MPU/SOC) ROHSNXP SemiconductorsMicrocontrollers (MCU/MPU/SOC)FM11NC08I
TDFN-10-EP(3x3)TDFN-10-EP(3x3) RF Transceiver ICs ROHSFUDAN MICRORF Transceiver ICs
GD25Q16CEIGR
USON-8(2x3)-40℃~+85℃ 100,000 cycles 120MHz 16Mbit 1uA 2.7V~3.6V 20 Years 250ms@(64KB) 600us SPI USON-8(2x3) NOR FLASH ROHSGigaDevice Semicon BeijingNOR FLASH
FSUSB42MUX
MSOP-10-40℃~+85℃ 12ns 13ns 2 250ps 2:1 3.7pF 3.9Ω 3V~4.4V 720MHz MSOP-10 Analog Switches, Multiplexers ROHSonsemiAnalog Switches, Multiplexers
GG040205100N2P
040212V 5.5V 5V TVS Unidirectional 0402 ESD and Surge Protection (TVS/ESD) ROHSKyocera AVXESD And Surge Protection (TVS/ESD)
PUSB3TB6AZ
XSON-7(1.2x2.2)-40℃~+85℃ 0.27pF 1nA 4.8V 6V Bidirectional ESD IEC 61000-4-2 XSON-7(1.2x2.2) ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
XRCGB16M000FXN01R0
SMD2016-4P-30℃~+85℃ 16MHz 200Ω 8pF ±40ppm ±40ppm SMD2016-4P Crystals ROHSMurataCrystals
README
README.mdSolo v2 Hardware
This repo contains the schematic and layout for Solo v2. Specifically, it contains the Kicad source files for the "module" PCB which contains all of the relevant circuitry.
What is not included is the "cavity" PCBs, or NFC antenna.
To generate a BOM, see bom/.
This is only provided as a reference. If you'd like to submit a PR or otherwise provide feedback, please contact SoloKeys team first.
Parts
41| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | RB521S30T5G | solo:SOD-523-thin | D3, D4, D5, D6 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R6, R8 |
| 3 | 500k | Resistor_SMD:R_0402_1005Metric | R5, R7, R9 |
| 2 | 100nF | Capacitor_SMD:C_0402_1005Metric | C14, C15 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric | C13, C17 |
| 2 | 22u | Capacitor_SMD:C_0603_1608Metric | C1, C3 |
| 2 | 5k | Resistor_SMD:R_0402_1005Metric | R2, R10 |
| 2 | 8pF | Capacitor_SMD:C_0402_1005Metric | C20, C21 |
| 2 | DNP | Capacitor_SMD:C_0402_1005Metric | CX1, CY1 |
| 2 | Fiducial_0.5mm_Mask1mm | Fiducial:Fiducial_0.5mm_Mask1mm | ABOTTOM_LEFT, ATOP_RIGHT |
| 1 | 180R | Resistor_SMD:R_0402_1005Metric | R1 |
| 1 | 40k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 47pF | Capacitor_SMD:C_0402_1005Metric | C16 |
| 1 | 4u7H | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | ARM_DEBUG | solo:TC2030-IDC-NL | D1 |
| 1 | FM11NC08 | solo:MLPD3X3 | N1 |
| 1 | FSUSB42 | solo:FSUSB42 | SW1 |
| 1 | GD25Q16CEIGR | solo:FLASH_2x3_USON8 | F1 |
| 1 | GG040205100N2P | Resistor_SMD:R_0402_1005Metric | Z1 |
| 1 | LED_RGBA | solo:RGB_LED_606 | L1 |
| 1 | LPC55S69JEV98K | solo:BGA98C50P13X13_700X700X97N | U1 |
| 1 | PUSB3TB6AZ | solo:XSON7 | Z2 |
| 1 | TLV742p | solo:Texas_X2SON-4_1x1mm_P0.65mm | T1 |
| 1 | TOP_A | solo:top-A | TOP1 |
| 1 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | USB_C_Plug | solo:USB-C_WURTH | P1 |
| 1 | XRCGB16M000FXN01R0 | solo:Crystal-2mmx1.6mm | Y1 |
Questions
How big is the Solo2 PCB?
It measures 23.4 × 12 mm and has 4 copper layers, 0.8 mm thick.
What parts does the Solo2 use?
41 parts, built around the LPC55S69JEV98K, FM11NC08I, GD25Q16CEIGR and FSUSB42MUX. 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 Solo2 KiCad files?
From the solokeys/solo2-hw repository on GitHub, at the commit this page was made from: the board is solo2.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Solo2 design in my own project?
Its repository states no licence, so its author keeps all rights: ask solokeys before reusing the design.
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