HardLabs

BitaxeNajaDuo

Zayno·BitaxeFluxAstra

BitaxeNajaDuo PCB layout, top view — open source ESP32 board by Zayno

About the BitaxeNajaDuo PCB

BitaxeNajaDuo is an open source ESP32 PCB design by Zayno, published on GitHub under the CERN-OHL-S-2.0 license. It is a 6-layer board measuring 147 × 90 mm, with 198 components from 63 distinct parts.

Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the SN74AXC4T774PWR, TPS546D24SRVFR, TPS62933DRLR, SX3M25.000E20F30THN and TLV77308PDBVR. By type, the board carries 115 capacitors, 52 resistors, 15 ICs, 6 connectors, 6 inductors and 2 modules.

From the project

Current revision: A0 engineering draft. The conversion is not ready for fabrication, assembly or powered ASIC testing. The supplied firmware integration patch deliberately inhibits ASIC power and cannot mine.

Current revision: A0 engineering draft. The conversion is not ready for fabrication, assembly or powered ASIC testing. The supplied firmware integration patch deliberately inhibits ASIC power and cannot mine.

Bitaxe Flux is a single-chip Bitcoin miner derived from Bitaxe Naja Duo. Its goal is to support one Bitmain BM1373, a programmable high-current core supply and substantial desktop CPU cooling, with compatibility with the open-source ESP-Miner architecture. Maximum practical overclocking is the development objective; no hashrate, safe overclock, continuous current, board-power or thermal…

BitaxeNajaDuo, from the project README
From the project README

Main components on the BitaxeNajaDuo

SN74AXC4T774PWRTPS546D24SRVFRTPS62933DRLRESP32-S3-WROOM-1-N16R8SX3M25.000E20F30THNTLV77308PDBVRTLV77312PDBVREMC2103-2-AP25MHzAP2502KTR-G1TLV3544BM1373BM1340_mode1

BitaxeNajaDuo bill of materials (BOM)

198 components, 63 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SN74AXC4T774PWR
SN74AXC4T774
U2
2
TPS546D24SRVFR
TPS546D24S
U3, U7
2
TPS62933DRLR
U4, U5
1
ESP32-S3-WROOM-1-N16R8
U6
1
SX3M25.000E20F30THN
25MHz
U8
1
TLV77308PDBVR
U10
1
TLV77312PDBVR
U11
1
TLV77308PDBVR
U12
1
EMC2103-2-AP
EMC2103-2-AP-TR
U13
1
TLV77312PDBVR
U14
1
25MHz
U15
1
AP2502KTR-G1
U16
1
TLV3544
U17
1
BM1373
BM1340_mode1
A1
1
BM1340_mode1
A2
1
XT30PW-M
XT30
J1
1
FPC-05FB-30PH20
FPC-05F-30PH20
J2
1
USB4105-GF-A
USB_C_Receptacle_USB2.0
J4
3
0470531000
Conn_01x04
J7, J8, J9
2
CS1213AGF260
SWITCH-SPST
SW1, SW2
Show 43 more
QtyPartRefs
2
BLM31KN601SN1L
FerriteBead
FB1, FB2
1
SLC1175-301
300nH
L1
2
FTC201612S1R5MBCA
1.5uH
L2, L3
1
SLC1175-271MEC
300nH
L4
19
GRM188R61E106KA73D
10uF
C2, C3, C8, C12, C24, C26, C38, C41 +11
9
TMK107B7105KA-T
1uF
C4, C16, C21, C27, C44, C45, C48, C199 +1
2
GRM155R71E472KA01D
4.7nF
C5, C31
2
GRM155R61H222KA01D
2.2nF
C6, C32
8
KGM05AR71C104KH
0.1uF
C7, C18, C33, C51, C52, C53, C92, C94
2
CC0805KRX7R9BB102
1000pF
C9, C46
12
CL31A107MQHNNNE
100uF
C10, C11, C13, C14, C15, C102, C105, C107 +4
2
GRM155R61A475MEAAD
4.7uF
C19, C40
5
GRM155R71H104KE14D
0.1uF
C22, C37, C39, C42, C43
3
0.1uF
C23, C99, C206
2
CC0402KRX7R9BB333
33nF
C29, C30
2
CL21A226MPQNNNE
22uF
C35, C36
3
KGM05ACG1E330JH
33pF
C47, C100, C103
1
33pF
C50
5
10uF
C58, C59, C60, C61, C62
16
EMK105BJ105MV-F
1uF
C63, C64, C65, C66, C67, C68, C69, C70 +8
17
1uF
C72, C73, C74, C75, C76, C77, C78, C79 +9
1
GRM1555C1H471JA01D
470pF
C93
1
470pF
C95
1
CC0402JRNPO9BN101
100pF
C101
2
120UF
120uF
C104, C106
2
RC0402FR-0749R9L
49.9
R1, R10
2
ESR10EZPJ1R0
1
R2, R21
2
RC0402FR-0710RL
10
R3, R19
9
RC0402JR-0710KL
10k
R5, R6, R13, R16, R20, R24, R30, R37 +1
1
RC0402FR-0730K9L
30.9k
R12
2
RMCF0402JT5K10
5.1k
R14, R25
1
RC0402FR-0713K7L
13.7k
R15
1
RC0402FR-0752K3L
52.3k
R17
1
RC0402FR-0720KL
20k
R23
2
RC0402FR-071KL
1k
R26, R38
1
RT0402BRD072KL
2k
R27
10
1k
R28, R55, R58, R61, R64, R68, R69, R70 +2
2
RC0402JR-070RL
0
R29, R32
1
RC0402FR-075K6L
5.6k
R31
4
0
R34, R36, R67, R73
1
RC0402JR-074K7L
4.7k
R39
2
RC0402DR-0710KL
10k
R45, R47
8
10k
R56, R57, R59, R60, R62, R63, R65, R66

BitaxeNajaDuo design files

The KiCad project lives in the Zayno/BitaxeFluxAstra repository on GitHub; these links point at the commit this page was built from.

BitaxeNajaDuo: common questions

What microcontroller does the BitaxeNajaDuo use?

The BitaxeNajaDuo is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.

How big is the BitaxeNajaDuo PCB?

The BitaxeNajaDuo measures 147 × 90 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the BitaxeNajaDuo?

198 components, from 63 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the BitaxeNajaDuo design files?

From the Zayno/BitaxeFluxAstra repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the BitaxeNajaDuo design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Zayno chose for the repository.

Can I test firmware for the BitaxeNajaDuo without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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