6 layers76 × 101 mm
6 layers76 × 101 mm
Bitaxeproto
bitaxeorg/bitaxeprotoquad Proto MC3 bitaxe
- Size
- 76 × 101 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 229
- Nets
- 169
- Pads
- 750
- Tracks, vias
- 891, 1,191
- Pours
- 28
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 May 2026
- Updated
- 4 Sep 2026
Overview
Bitaxeproto is an open-source printed circuit board by bitaxeorg, from the bitaxeorg/bitaxeproto repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 6-layer board of 76 × 101 mm with 229 parts on 169 nets, routed with 891 tracks and 1,191 vias.
It is built around the ESP32-S3-WROOM-1-N8, TLV3542ID and TPS546D24SRVFR, with the STHW4-DU-HN050206, TS3011ILT and BSS138 among its other parts. Its parts include 114 capacitors, 35 resistors, 15 ICs, 5 connectors and 3 inductors. It belongs with the ESP32 boards of this library.
Main components
7
ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
TLV3542ID
SOIC-8-2.75V~-1.25V、1.25V~2.75V -40℃~+125℃ 100MHz 100mA 150V/us 1pA 2 2.7V~5.5V 2mV 3pA 4.5uV/℃ 5.2mA 7.5nV/√Hz@1MHz 80dB ESD protection Rail-to-Rail Input, Rail-to-Rail Output SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
TPS546D24SRVFR
LQFN-40-CLIP(5x7)-40℃~+150℃@(TJ) 1 1.5MHz 2.95V~16V 250mV~5.5V 40A Adjustable Buck Buck Built-in Yes LQFN-40-CLIP(5x7) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
STHW4-DU-HN050206
-0.6±0.03mm 5*2*0.6mm Compliant with RoHS environmental requirements H62 brass Nickel Plating - Metal Products SMT Copper SheetSTEIPUMetalProducts*SmtCopperSheets
TS3011ILT
SOT-23-5-40℃~+125℃ 1 1pA 1pA 2.2V~5V 200uV 2mV 470uA 5.5V 5uV/℃ 68dB 8ns Push-pull Rail-to-Rail Input SOT-23-5 Comparators ROHSSTMicroelectronicsComparators
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
TC2030-IDC-NL
UncategorisedTag Connect
README
README.mdbitaxeProto miner with quad Block Proto MC3 ASICs
It is still an untested prototype! Don't build this expecting it to work yet.
- Open Hardware License; Real Open Source.
- KiCAD design files.
- Four Proto MC3 ASICs, two stacks of two ASICs
- Each MC3 is nominally 1.12V with approx 675 GH/s.
- 11-13V XT30 input voltage
- TPS546D24S single-phase voltage regulator tuned for 2.4V output @ 30A
- The voltage regulator backside power plane is exposed to hopefully thermally bond it with the main heatsink.
- TPS546D24 backside busbar to cool the voltage regulator from the main heatsink.
- Fan controlled from the ESP32
- ESP32S3 for esp-miner support.
- Display moved off the main board. Should support the bonanzaDisplay
- Gerbers not provided to discourage side hacks and AliEx slop. HMU if you need help generating gerbers with KiCad.
©️ bitaxeorg
Parts
229| Qty | Value | Footprint | References |
|---|---|---|---|
| 44 | 1uF | Capacitor_SMD:C_0402_1005Metric | C100, C101, C102, C103, C104, C105, C106, C107, C108, C109, C110, C111, C112, C113, C114, C115 +28 |
| 20 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C16, C37, C38, C41, C42, C51, C52, C59, C61, C72, C77, C84, C86, C130, C206, C208 +4 |
| 20 | 10uF | Capacitor_SMD:C_0603_1608Metric | C8, C12, C47, C66, C67, C68, C69, C70, C71, C73, C74, C75, C76, C78, C80, C81 +4 |
| 12 | 10k | Resistor_SMD:R_0402_1005Metric | R2, R3, R13, R15, R22, R25, R27, R34, R56, R57, R59, R60 |
| 9 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C11, C79, C85, C87, C89, C92, C94, C97, C131 |
| 7 | 1k | Resistor_SMD:R_0402_1005Metric | R1, R17, R55, R58, R68, R69, R71 |
| 6 | GND | bitaxe:TestPoint_Pad_1.0x0.4mm | TP52, TP53, TP54, TP55, TP58, TP59 |
| 5 | RST | bitaxe:TestPoint_Pad_1.0x0.4mm | TP41, TP44, TP51, TP56, TP57 |
| 4 | 22uF | Capacitor_SMD:C_0805_2012Metric | C21, C22, C35, C36 |
| 4 | 4.7k | Resistor_SMD:R_0402_1005Metric | R18, R19, R20, R21 |
| 4 | Fiducial | bitaxe:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4 |
| 4 | GND | bitaxe:TestPoint_Pad_D1.0mm | TP16, TP17, TP19, TP21 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 4 | ProtoMC3 | bitaxe:proto-mc3 | A1, A2, A3, A4 |
| 4 | RX | bitaxe:TestPoint_Pad_1.0x0.4mm | TP43, TP45, TP47, TP50 |
| 3 | 4.7uF | Capacitor_SMD:C_1206_3216Metric | C6, C7, C19 |
| 3 | 68uF | Capacitor_SMD:CP_Elec_5x5.8 | C1, C2, C3 |
| 2 | 1.5uH | bitaxe:IND-SMD_L2.0-W1.6 | L2, L3 |
| 2 | 100uF | Capacitor_SMD:C_1210_3225Metric | C23, C24 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C9, C10 |
| 2 | 25MHz | bitaxe:SMD3225-4P | U8, U15 |
| 2 | 33nF | Capacitor_SMD:C_0402_1005Metric | C29, C30 |
| 2 | 49.9 | Resistor_SMD:R_0402_1005Metric | R7, R8 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R23, R24 |
| 2 | CLK | bitaxe:TestPoint_Pad_1.0x0.4mm | TP46, TP48 |
| 2 | CLKI | bitaxe:TestPoint_Pad_D1.0mm | TP10, TP11 |
| 2 | SWITCH-SPST | bitaxe:SW-SMD_TC-S3601-3.5-260G-F0.6 | SW3, SW4 |
| 2 | TLV77308PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U7, U10 |
| 2 | TLV77312PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U6, U11 |
| 2 | TPS62933DRLR | bitaxe:SOT-583-8_L2.1-W1.2-P0.50-LS1.6-BR | U4, U5 |
| 2 | TX | bitaxe:TestPoint_Pad_1.0x0.4mm | TP42, TP49 |
| 1 | 0V75 | bitaxe:TestPoint_Pad_D1.0mm | TP6 |
| 1 | 0V75-0 | bitaxe:TestPoint_Pad_D1.0mm | TP2 |
| 1 | 1 | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 10 | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 1000pF | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C18 |
| 1 | 12k | Resistor_SMD:R_0402_1005Metric | R26 |
| 1 | 12pF | Capacitor_SMD:C_0402_1005Metric | C48 |
| 1 | 13.7k | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 1V2 | bitaxe:TestPoint_Pad_D1.0mm | TP12 |
| 1 | 1V2-0 | bitaxe:TestPoint_Pad_D1.0mm | TP4 |
| 1 | 2.2nF | Capacitor_SMD:C_0402_1005Metric | C14 |
| 1 | 220k | Resistor_SMD:R_0402_1005Metric | R70 |
| 1 | 230nH | bitaxe:IND-SMD_L11.0-W7.2 | L1 |
| 1 | 3.3V Zener | Diode_SMD:D_SOD-123 | D13 |
| 1 | 30.9k | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 3V3 | bitaxe:TestPoint_Pad_D1.0mm | TP9 |
| 1 | 4.7nF | Capacitor_SMD:C_0402_1005Metric | C13 |
| 1 | 5.6k | Resistor_SMD:R_0402_1005Metric | R33 |
| 1 | 52.3k | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 5V | bitaxe:TestPoint_Pad_D1.0mm | TP13 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Conn_01x04 | bitaxe:470531000 | J4 |
| 1 | Conn_01x10 | bitaxe:CONN10_1-1735042-0 | J5 |
| 1 | ESP32-S3-WROOM-1 | bitaxe:ESP32-S3-WROOM-1 | U12 |
| 1 | GND0 | bitaxe:TestPoint_Pad_D1.0mm | TP3 |
| 1 | Heatsink | bitaxe:Heatsink-5hole-BitaxeGT | HS1 |
| 1 | LOGO | bitaxe:bitaxe_logo_small | G*** |
| 1 | NetTie_2 | bitaxe:NetTie-2_SMD_Pad0.2mmx1mm | NT1 |
| 1 | PWR EN | bitaxe:TestPoint_Pad_D1.0mm | TP1 |
| 1 | RST | bitaxe:TestPoint_Pad_D1.0mm | TP14 |
| 1 | RX | bitaxe:TestPoint_Pad_D1.0mm | TP15 |
| 1 | SCL | bitaxe:TestPoint_Pad_D1.0mm | TP8 |
| 1 | SDA | bitaxe:TestPoint_Pad_D1.0mm | TP5 |
| 1 | SN74AVC2T45DCUR | bitaxe:VSSOP-8_L2.1-W2.4-P0.50-LS3.2-BR | U14 |
| 1 | STHW4-DU-HN050206 | bitaxeProto:PAD-SMD_L5.0-W2.0_STHW4-DU-HN050206 | U1 |
| 1 | TC2030-IDC | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J8 |
| 1 | TLV3542 | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U19 |
| 1 | TPS22919DCKR | bitaxe:DCK0006A_N | U9 |
| 1 | TPS546D24SRVFR | bitaxe:LQFN40-CLIP | U2 |
| 1 | TS3011 | bitaxe:SOT-23-5 | U13 |
| 1 | USB_C_Receptacle_USB2.0 | bitaxe:USB_C_Receptacle_GCT_USB4105-xx-A | J6 |
| 1 | VDD | bitaxe:TestPoint_Pad_D1.0mm | TP7 |
| 1 | XT30 | bitaxe:XT30PW-M | J1 |
Questions
How big is the Bitaxeproto PCB?
It measures 76 × 101 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Bitaxeproto use?
229 parts, built around the ESP32-S3-WROOM-1-N8, TLV3542ID, TPS546D24SRVFR and STHW4-DU-HN050206. 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 Bitaxeproto KiCad files?
From the bitaxeorg/bitaxeproto repository on GitHub, at the commit this page was made from: the board is bitaxeProto.kicad_pcb and its schematic ASIC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bitaxeproto design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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