2 layers27.4 × 60 mm
6 layers147 × 90 mm
BitaxeNajaDuo
bitaxeorg/naja-duo7Dual BM1373 open-source Bitcoin miner
- Size
- 147 × 90 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 235
- Nets
- 177
- Pads
- 1,079
- Tracks, vias
- 1,285, 405
- Pours
- 24
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 28 Aug 2026
- Updated
- 28 Aug 2026
Overview
BitaxeNajaDuo is an open-source printed circuit board by bitaxeorg, from the bitaxeorg/naja-duo repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 6-layer board of 147 × 90 mm with 235 parts on 177 nets, routed with 1,285 tracks and 405 vias.
It is built around the ESP32-S3-WROOM-1-N16R8, AP2502KTR-G1 and EMC2103-2-AP-TR, with the TLV3544ID, SN74AXC4T774PW and FPC-05F-30PH20 among its other parts. Its parts include 115 capacitors, 54 resistors, 15 ICs, 6 connectors and 4 inductors. It belongs with the ESP32 boards of this library.
Main components
6
ESP32-S3-WROOM-1-N16R8
SMD,25.5x18mm-103.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AP2502KTR-G1
SOT-23-6-40℃~+85℃ 1% 150kHz 20mA 2V~6V 4 Built-in Over-Temperature Protection (OTP) PWM SOT-23-6 LED Drivers ROHSDiodes IncorporatedLED Drivers
EMC2103-2-AP-TR
QFN-16-EP(4x4)I2C QFN-16-EP(4x4) Brushed DC Motor Drivers ROHSMicrochip TechnologyBrushless DC (BLDC) Motor Driver
TLV3544ID
SOIC-14-2.75V~-1.25V、1.25V~2.75V -40℃~+125℃ 100mA 150V/us 1pA 2.5V~5.5V 200MHz 2mV 3pA 4 4.5uV/℃ 5.2mA 7.5nV/√Hz@1MHz 80dB Built-in compensation、ESD protection Rail-to-Rail Input, Rail-to-Rail Output SOIC-14 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
SN74AXC4T774PW
TSSOP-16-40℃~+125℃ 1 310Mbps 4 650mV~3.6V 650mV~3.6V Bidirectional Level translator Power-off protection、Output enable high-impedance Tri-State TSSOP-16 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
FPC-05F-30PH20
SMD,P=0.5mm,卧贴-25℃~+85℃ 0.3mm 0.5mm 2mm 30P 500mA 50V Bottom Contact Hinged Lid Phosphor bronze Surface Mount, Right Angle Tin SMD,P=0.5mm,卧贴 FFC, FPC (Flat Flexible) Connector Assemblies ROHSXUNPUFFC, FPC (Flat Flexible) Connector Assemblies
README
README.mdBitaxeNajaDuo is a dual BM1373 Open Source Bitcoin miner using esp-miner
The BM1373 used in this design is suspected to be the ASIC used in the Antminer S23 series miners.
It is still an untested prototype! Don't build this expecting it to work at all.
Bitaxe is an open source project released under the CERN Open Hardware Licence Version 2 - Strongly Reciprocal
Parts
235| Qty | Value | Footprint | References |
|---|---|---|---|
| 42 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C16, C21, C27, C44, C45, C48, C63, C64, C65, C66, C67, C68, C199, C200, C207 +26 |
| 24 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C12, C24, C26, C38, C41, C49, C54, C55, C110, C111, C112, C113, C116, C117 +8 |
| 19 | 10k | Resistor_SMD:R_0402_1005Metric | R5, R6, R13, R16, R20, R24, R30, R37, R40, R45, R47, R56, R57, R59, R60, R62 +3 |
| 16 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C7, C18, C22, C23, C33, C37, C39, C42, C43, C51, C52, C53, C92, C94, C99, C206 |
| 12 | 100uF | Capacitor_SMD:C_1206_3216Metric | C10, C11, C13, C14, C15, C102, C105, C107, C108, C109, C114, C115 |
| 12 | 1k | Resistor_SMD:R_0402_1005Metric | R26, R28, R38, R55, R58, R61, R64, R68, R69, R70, R71, R72 |
| 8 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3, FID4, FID5, FID6, FID7, FID8 |
| 6 | 0 | Resistor_SMD:R_0402_1005Metric | R29, R32, R34, R36, R67, R73 |
| 4 | 33pF | Capacitor_SMD:C_0402_1005Metric | C47, C50, C100, C103 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1, H2, H3, H4 |
| 4 | NetTie_2 | bitaxe:NetTie-2_SMD_Pad0.2mmx1mm | NT1, NT2, NT5, NT6 |
| 3 | Conn_01x04 | bitaxe:470531000 | J7, J8, J9 |
| 2 | 1 | Resistor_SMD:R_0805_2012Metric | R2, R21 |
| 2 | 1.5uH | bitaxe:IND-SMD_L2.0-W1.6 | L2, L3 |
| 2 | 10 | Resistor_SMD:R_0402_1005Metric | R3, R19 |
| 2 | 1000pF | Capacitor_SMD:C_0805_2012Metric | C9, C46 |
| 2 | 120uF | Capacitor_SMD:CP_Elec_6.3x5.9 | C104, C106 |
| 2 | 2.2nF | Capacitor_SMD:C_0402_1005Metric | C6, C32 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric | C35, C36 |
| 2 | 25MHz | bitaxe:SMD3225-4P | U8, U15 |
| 2 | 300nH | bitaxe:SLC1175-271MEC_COC | L1, L4 |
| 2 | 33nF | Capacitor_SMD:C_0402_1005Metric | C29, C30 |
| 2 | 4.7nF | Capacitor_SMD:C_0402_1005Metric | C5, C31 |
| 2 | 4.7uF | Capacitor_SMD:C_0402_1005Metric | C19, C40 |
| 2 | 470pF | Capacitor_SMD:C_0402_1005Metric | C93, C95 |
| 2 | 49.9 | Resistor_SMD:R_0402_1005Metric | R1, R10 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R14, R25 |
| 2 | BM1340_mode1 | bitaxe:BM1340 | A1, A2 |
| 2 | FerriteBead | Capacitor_SMD:C_1206_3216Metric | FB1, FB2 |
| 2 | LITE | bitaxe:TestPoint_Pad_1.0x0.4mm | TP12, TP13 |
| 2 | MODE | bitaxe:TestPoint_Pad_1.0x0.4mm | TP41, TP42 |
| 2 | ROSC | bitaxe:TestPoint_Pad_1.0x0.4mm | TP10, TP11 |
| 2 | SWITCH-SPST | bitaxe:SW_CS1213AGF260_CRS | SW1, SW2 |
| 2 | TLV77308PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U10, U12 |
| 2 | TLV77312PDBVR | Package_TO_SOT_SMD:SOT-23-5 | U11, U14 |
| 2 | TPS546D24S | bitaxe:LQFN40-CLIP | U3, U7 |
| 2 | TPS62933DRLR | bitaxe:SOT-583-8_L2.1-W1.2-P0.50-LS1.6-BR | U4, U5 |
| 1 | 100pF | Capacitor_SMD:C_0402_1005Metric | C101 |
| 1 | 13.7k | Resistor_SMD:R_0402_1005Metric | R15 |
| 1 | 20k | Resistor_SMD:R_0402_1005Metric | R23 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R27 |
| 1 | 30.9k | Resistor_SMD:R_0402_1005Metric | R12 |
| 1 | 4.7k | Resistor_SMD:R_0402_1005Metric | R39 |
| 1 | 5.6k | Resistor_SMD:R_0402_1005Metric | R31 |
| 1 | 52.3k | Resistor_SMD:R_0402_1005Metric | R17 |
| 1 | AP2502KTR-G1 | Package_TO_SOT_SMD:SOT-23-6 | U16 |
| 1 | BI | bitaxe:TestPoint_Pad_1.0x0.4mm | TP5 |
| 1 | BO | bitaxe:TestPoint_Pad_1.0x0.4mm | TP17 |
| 1 | CI | bitaxe:TestPoint_Pad_1.0x0.4mm | TP8 |
| 1 | CLKI | bitaxe:TestPoint_Pad_1.0x0.4mm | TP6 |
| 1 | CLKI | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | CLKO | bitaxe:TestPoint_Pad_1.0x0.4mm | TP18 |
| 1 | CO | bitaxe:TestPoint_Pad_1.0x0.4mm | TP22 |
| 1 | EMC2103-2-AP-TR | Package_DFN_QFN:QFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U13 |
| 1 | ESP32-S3-WROOM-1-N16R8 | bitaxe:ESP32-S3-WROOM-1 | U6 |
| 1 | FPC-05F-30PH20 | bitaxe:FPC-SMD_30P-P0.50_XUNPU_FPC-05F-30PH20 | J2 |
| 1 | LOGO | bitaxe:bitaxe_logo_small | G*** |
| 1 | NRSTI | bitaxe:TestPoint_Pad_1.0x0.4mm | TP9 |
| 1 | NRSTO | bitaxe:TestPoint_Pad_1.0x0.4mm | TP23 |
| 1 | RI | bitaxe:TestPoint_Pad_1.0x0.4mm | TP19 |
| 1 | RO | bitaxe:TestPoint_Pad_1.0x0.4mm | TP7 |
| 1 | Rshdn | Resistor_SMD:R_0402_1005Metric | R33 |
| 1 | Rtrip | Resistor_SMD:R_0402_1005Metric | R35 |
| 1 | SN74AXC4T774 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 1 | TLV3544 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U17 |
| 1 | USB_C_Receptacle_USB2.0 | bitaxe:USB_C_Receptacle_GCT_USB4105-xx-A | J4 |
| 1 | XT30 | Connector_AMASS:AMASS_XT30UPB-M_1x02_P5.0mm_Vertical | J1 |
The 234 most common of 235 parts.
Questions
How big is the BitaxeNajaDuo PCB?
It measures 147 × 90 mm and has 6 copper layers, 1.6 mm thick.
What parts does the BitaxeNajaDuo use?
235 parts, built around the ESP32-S3-WROOM-1-N16R8, AP2502KTR-G1, EMC2103-2-AP-TR and TLV3544ID. 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 BitaxeNajaDuo KiCad files?
From the bitaxeorg/naja-duo repository on GitHub, at the commit this page was made from: the board is BitaxeNajaDuo.kicad_pcb and its schematic ASIC.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BitaxeNajaDuo 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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