2 layers81 × 47.5 mm
VincentPCB
soerengraae/Vincent
An ESP32-based vinyl record scanner that looks up barcodes in the Discogs database and displays album information on a 3.97" e-ink screen. Still a work in progress.
45 parts
4 layers62.9 × 88.6 mm
Bit block
Citrullin/Sovereign_Bunny_Stack4From web 3 unicorn fantasy to federated web 2.5 reality.
- Size
- 62.9 × 88.6 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 169
- Nets
- 156
- Pads
- 623
- Tracks, vias
- 1,342, 430
- Pours
- 22
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 19 Apr 2026
- Updated
- 22 Jul 2026
Overview
Bit block is an open-source printed circuit board by Citrullin, from the Citrullin/Sovereign_Bunny_Stack repository on GitHub. It is a 4-layer board of 62.9 × 88.6 mm with 169 parts on 156 nets, routed with 1,342 tracks and 430 vias.
It is built around the CH340C, ESP32-WROOM-32D and VC-02, with the TF-01A, TXS0101DBV and AMS1117-5.0 among its other parts. Its parts include 71 capacitors, 44 diodes, 28 resistors, 12 ICs and 7 connectors. It belongs with the ESP32 boards of this library.
Main components
12
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
ESP32-WROOM-32D
-- WiFi Modules ROHSEspressif SystemsWiFi Modules
VC-02
SMD-20PRF ModulesAi-Thinker
TF-01A
SMD1.85mm Connector and Ejector MicroSD Card (TF Card) Push-Push With Locating Pins SMD SD Card / Memory Card Connector ROHSHRO ElectronicsSD Card / Memory Card Connector
TXS0101DBV
SOT-23-6-40℃~+85℃ 1 1 1.65V~3.6V 2.3V~5.5V 24Mbps Automatic direction detection、Output enable high-impedance、Integrated pull-up resistor Bidirectional Level translator Push-Pull、Open-drain SOT-23-6 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
AMS1117-5.0
SOT-223-40℃~+125℃ 1 1.3V 15V 1A 5V 60dB Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
TS5A23159DGSR
VSSOP-10-0.5mm-40℃~+85℃ 1.1Ω 1.65V~5.5V 100MHz 15ns 2 20ns 2:1 VSSOP-10-0.5mm Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, MultiplexersAMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
WS2812B-4020
SMD,4x2mm-20℃~+70℃ 0.6mA 1.7mm 2mm 3.7V~5.3V 3.98mm 800Kbit/s B:465nm~475nm、R:620nm~625nm、G:515nm~525nm Built-in power-on reset circuit、Built-in power-on reset circuit、Integrated intelligent reverse connection protection function G:600mcd~1000mcd、B:200mcd~300mcd、R:300mcd~500mcd SMD,4x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
ESD5V0L1BA-MS
SOD-323-55℃~+125℃ 11V、15V 15A@8/20us 180pF 1uA 500W@8/20us 5V 8.5V ESD IEC 61000-4-2、IEC 61000-4-4 SOD-323 ESD and Surge Protection (TVS/ESD) ROHSMSKSEMIESD And Surge Protection (TVS/ESD)
SS8050-G
SOT-231 NPN 1.5A 100 100MHz 100nA 25V 300mW 400mV 5V NPN SOT-23 Bipolar (BJT) ROHSComchipBipolar (BJT)
PJ-3420-A-SMT
SMD-20℃~+70℃ 3.5mm Headphone Jack 30V 500mA SMD Audio Connectors ROHSXKB ConnectionAudio Connectors (Headphones)
README
hardware/bit.block/board/README.mdPCB Files for the Astronaut on Moon Base Set
The offline local-only voice recognition tinyblock set. Full KiCAD files in this directory.
Parts
169| Qty | Value | Footprint | References |
|---|---|---|---|
| 53 | 0.1u | Capacitor_SMD:C_0402_1005Metric | C13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C28 +37 |
| 40 | WS2812B-4020 | SnapEDA:SMD_WS2812B-4020 | LED1, LED2, LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17, LED18, LED19, LED20, LED21, LED22, LED23 +24 |
| 11 | 10k | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R4, R10, R11, R12, R17, R22, R23, R24 |
| 7 | 1u | Capacitor_SMD:C_0402_1005Metric | C1, C10, C59, C60, C63, C64, C70 |
| 7 | 22uF/10V(20%) | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A | C2, C6, C7, C8, C9, C11, C12 |
| 5 | 100 | Resistor_SMD:R_0402_1005Metric | R5, R6, R7, R18, R19 |
| 4 | 10u | Capacitor_SMD:C_0402_1005Metric | C61, C62, C65, C66 |
| 4 | 22k | Resistor_SMD:R_0402_1005Metric | R15, R16, R20, R21 |
| 3 | 147873-2 | SnapEDA:SW_147873-2 | S1, S2, S3 |
| 3 | 51k | Resistor_SMD:R_0402_1005Metric | R25, R26, R27 |
| 3 | ESD5V0L1BA | Diode_SMD:D_SOD-323 | D1, D2, D4 |
| 3 | TXS0101DBV | Package_TO_SOT_SMD:SOT-23-6 | U6, U7, U8 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric | R8, R9 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R13, R14 |
| 2 | AMS1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4, U5 |
| 2 | SS8050-G | SnapEDA:TRANS_SS8050-G | Q1, Q2 |
| 2 | TS5A23159DGSR | Package_SO:MSOP-10_3x3mm_P0.5mm | U9, U12 |
| 1 | SBR3A40SAQ-13 | SnapEDA:DIOM5226X230N | D3 |
| 1 | 4R7 | Resistor_SMD:R_0402_1005Metric | R28 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U3 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U11 |
| 1 | ESP32-WROOM-32D | RF_Module:ESP32-WROOM-32 | U2 |
| 1 | I2C | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J3 |
| 1 | LED_EXT1 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J4 |
| 1 | LED_EXT2 | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J5 |
| 1 | Microphone | Connector_PinHeader_2.00mm:PinHeader_1x02_P2.00mm_Vertical | J1 |
| 1 | PJ-3420-A-SMT | Library:PJ3420ASMT | J6 |
| 1 | SPI | Connector_JST:JST_SH_SM06B-SRSS-TB_1x06-1MP_P1.00mm_Horizontal | J2 |
| 1 | SW_DIP_x03 | SnapEDA:SW_DS05-127-2-03BK-SMT-TR | SW1 |
| 1 | TF-01A | SnapEDA:TF-01A | MICRO_SD1 |
| 1 | TYPE-C-31-M-12 | SnapEDA:HRO_TYPE-C-31-M-12 | J7 |
| 1 | VC-02 | SnapEDA:Ai-Thinker-VC02 | U1 |
| 1 | YX6300 | Package_SO:SSOP-24_3.9x8.7mm_P0.635mm | U10 |
Similar boards
- 2 layers58 × 48 mm
- 4 layers100 × 100 mm
- 6 layers90 × 89 mm
Modular processing board
igorwolfs/modular-processing-hw
MCU Breakout board with Hirose BM28B connector
177 parts1 - 2 layers391 × 131.1 mm
- 2 layers391 × 131.2 mm
- 2 layers96.2 × 53.4 mm
Fancontroller
dj-bauer/espfancooling
Just another fan controller, but this time with bluetooth
89 parts2GPL-3.0 - 2 layers78.7 × 50.8 mm
Questions
How big is the Bit block PCB?
It measures 62.9 × 88.6 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Bit block use?
169 parts, built around the CH340C, ESP32-WROOM-32D, VC-02 and TF-01A. 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 Bit block KiCad files?
From the Citrullin/Sovereign_Bunny_Stack repository on GitHub, at the commit this page was made from: the board is hardware/bit.block/board/bit_block.kicad_pcb and its schematic hardware/bit.block/board/bit_block.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bit block design in my own project?
Its repository states no licence, so its author keeps all rights: ask Citrullin before reusing the design.