6 layers84 × 50 mm
Solar ribbit
Ribbit-Network/ribbit-network-frog-hardware
The sensor for the world's largest crowdsourced network of open-source, low-cost, GHG Gas Detection Sensors.
171 parts107MIT
4 layers40 × 30 mm
Pixie device
firefly/pixie-device18Firefly Pixie hardware wallet design, schematics and PCB
- Size
- 40 × 30 mm
- Copper layers
- 4
- Thickness
- 0.79 mm
- Parts
- 64
- Nets
- 61
- Pads
- 288
- Tracks, vias
- 403, 198
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Oct 2023
- Updated
- 27 Nov 2024
Overview
Pixie device is an open-source printed circuit board by firefly, from the firefly/pixie-device repository on GitHub. It is a 4-layer board of 40 × 30 mm with 64 parts on 61 nets, routed with 403 tracks and 198 vias.
It is built around the ESP32-C3, W25Q128JVSIQ and 74LVC1T45W6, with the TPSPX3819M5-L-3-3, USBLC6-2P6 and 0201X104K100NT among its other parts. Its parts include 20 capacitors, 12 resistors, 5 ICs, 4 diodes and 4 switches. It belongs with the ESP32 and RISC-V boards of this library.
Main components
12
ESP32-C3
QFN-32-EP(5x5)12bit 160MHz 22 3V~3.6V Others QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSEspressif SystemsMicrocontrollers (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
74LVC1T45W6
SOT-26-40℃~+125℃ 1 1 1.65V~5.5V 1.65V~5.5V Bidirectional Power-Off Protection Tri-State SOT-26 Translators, Level Shifters ROHSDiodes IncorporatedTranslators, Level Shifters
TPSPX3819M5-L-3-3
SOT-23-5-40℃~+125℃@(Tj) 1 20V 3.3V 420mV@(100mA) 500mA 5uA 70dB@(1kHz) Fixed Over Current Protection、Over Temperature Protection、Enable Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTECH PUBLICVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2P6
SOT-666-6-55℃~+125℃ 0.35pF 14V 2 5.5A 5V 6V 80W 80nA ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
0201X104K100NT
0201100nF 10V X5R ±10% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSGuangdong Fenghua Advanced Tech (FH)Multilayer Ceramic Capacitors MLCC - SMD/SMTRC0201FR-07100RL
0201-55℃~+125℃ 100Ω 25V 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
WS2812C-2020-V1
SMD,2x2mm0.5mA 0.84mm 2.2mm 2kHz 2mm 3.7V~5.3V 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit G:520nm、R:624nm、B:467nm R:130mcd、G:320mcd、B:60mcd SMD,2x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
TS-1089S-AR02516
SMD,4.2x3.3mm-30℃~+80℃ 1.6N 100,000 cycles 12V 2.5mm 3.25mm 4.2mm 50mA Oval Button SMD(SMT) Tab SPST Surface Mount,Vertical White Without Bracket SMD,4.2x3.3mm Tactile Switches ROHSXUNPUTactile Switches
CL05A106MP5NUN
040210V 10uF X5R ±20% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMTCC0201JRNPO9BN100
020110pF 50V NP0 ±5% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTCL03A105MP3NSN
020110V 1uF X5R ±20% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
README
README.mdFirefly Pixie: Hardware
The hardware design, schematics and PCB layouts for the Firefly Pixie Hardware Wallet for Ethereum (and ilk).
See the CHANGELOG for high-level changes between board revisions.
Tech Specs
- Processor: ESP32-C3 (32-bit RISC-V)
- Speed: 160Mhz
- Memory: 400kb RAM, 16Mb Flash, 4kb eFuse
- Inputs: 4x tactile buttons
- Outputs:
- 240x240px IPS 1.3" display (16-bit color; RGB565)
- 4x RGB LED (WS2812B; 24-bit color; GRB888)
- Conectivity:
- USB-C (power + JTAG/CDC-ACM)
- BLE
Contributing
- To modify the files, use KiCad (open-source EDA application)
- Sicne the
git diffinvolved in modifying these files is somewhat opaque, please start a discussion first, so any changes can be coordinated
Photos
See the output folder for rendered schematics, PCBs and 3D renders along with photos of the various revisions.
License
MIT License.
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100n | Capacitor_SMD:C_0201_0603Metric | C2, C3, C7, C11, C13, C15, C16, C18, C19, C20 |
| 5 | 100R | Resistor_SMD:R_0201_0603Metric | R6, R7, R8, R9, R10 |
| 4 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | BOOT1, PU1, TP1, TP2 |
| 4 | WS2812B | firefly:WS2812B | D1, D2, D3, D4 |
| 4 | ~ | firefly:button-oval | SW1, SW2, SW3, SW4 |
| 3 | 10u | Capacitor_SMD:C_0402_1005Metric | C1, C4, C17 |
| 3 | TestPoint | TestPoint:TestPoint_Pad_1.0x1.0mm | 3V1, 5V1, GND1 |
| 2 | 10p | Capacitor_SMD:C_0201_0603Metric | C6, C9 |
| 2 | 1u | Capacitor_SMD:C_0201_0603Metric | C10, C12 |
| 2 | 2n2 | Inductor_SMD:L_0201_0603Metric | L1, L2 |
| 2 | 3p3 | Capacitor_SMD:C_0201_0603Metric | C5, C8 |
| 2 | 5k1 | Resistor_SMD:R_0201_0603Metric | R2, R3 |
| 1 | 0R | Resistor_SMD:R_0201_0603Metric | R5 |
| 1 | 10R | Resistor_SMD:R_0201_0603Metric | R12 |
| 1 | 10n | Capacitor_SMD:C_0201_0603Metric | C14 |
| 1 | 22R | Resistor_SMD:R_0201_0603Metric | R4 |
| 1 | 40Mhz | firefly:crystal_2520 | Y1 |
| 1 | 499R | Resistor_SMD:R_0201_0603Metric | R11 |
| 1 | 5K1 | Resistor_SMD:R_0201_0603Metric | R1 |
| 1 | ESP32-C3 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U4 |
| 1 | PCB_ANTENNA | firefly:PCB_Antenna | AE1 |
| 1 | SN74LVC1T45DBV | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | SPX3819M5-L-3-3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-563 | U1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.23x5.23mm_P1.27mm | U3 |
| 1 | ~ | firefly:JUSHUO_FPC_24 | J2 |
| 1 | ~ | firefly:USB_C_SINK | J1 |
The 58 most common of 64 parts.
Questions
How big is the Pixie device PCB?
It measures 40 × 30 mm and has 4 copper layers, 0.79 mm thick.
What parts does the Pixie device use?
64 parts, built around the ESP32-C3, W25Q128JVSIQ, 74LVC1T45W6 and TPSPX3819M5-L-3-3. 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 Pixie device KiCad files?
From the firefly/pixie-device repository on GitHub, at the commit this page was made from: the board is pixie-device.kicad_pcb and its schematic mcu.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pixie device design in my own project?
Its repository states no licence, so its author keeps all rights: ask firefly before reusing the design.
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