Bitaxe Flux - ENGINEERING DRAFT
About the Bitaxe Flux - ENGINEERING DRAFT PCB
Bitaxe Flux - ENGINEERING DRAFT 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 144 components from 50 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 88 capacitors, 30 resistors, 11 ICs, 6 connectors, 6 inductors and 2 switches.
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…
Main components on the Bitaxe Flux - ENGINEERING DRAFT
Bitaxe Flux - ENGINEERING DRAFT bill of materials (BOM)
144 components, 50 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | SN74AXC4T774PWR SN74AXC4T774 | TSSOP-16_4.4x5mm_P0.65mm | U2 |
| 2 | TPS546D24SRVFR TPS546D24S | LQFN40-CLIP | U3, U7 |
| 2 | TPS62933DRLR | SOT-583-8_L2.1-W1.2-P0.50-LS1.6-BR | U4, U5 |
| 1 | ESP32-S3-WROOM-1-N16R8 | ESP32-S3-WROOM-1 | U6 |
| 1 | SX3M25.000E20F30THN 25MHz | SMD3225-4P | U8 |
| 1 | TLV77308PDBVR | SOT-23-5 | U10 |
| 1 | TLV77312PDBVR | SOT-23-5 | U11 |
| 1 | EMC2103-2-AP EMC2103-2-AP-TR | QFN-16-1EP_4x4mm_P0.65mm_EP2.1x2.1mm | U13 |
| 1 | AP2502KTR-G1 | SOT-23-6 | U16 |
| 1 | BM1373 | BM1340 | A1 |
| 1 | XT30PW-M XT30 | AMASS_XT30UPB-M_1x02_P5.0mm_Vertical | J1 |
| 1 | FPC-05FB-30PH20 FPC-05F-30PH20 | FPC-SMD_30P-P0.50_XUNPU_FPC-05F-30PH20 | J2 |
| 1 | USB4105-GF-A USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A | J4 |
| 3 | 0470531000 Conn_01x04 | 470531000 | J7, J8, J9 |
| 2 | CS1213AGF260 SWITCH-SPST | SW_CS1213AGF260_CRS | SW1, SW2 |
| 2 | BLM31KN601SN1L FerriteBead | C_1206_3216Metric | FB1, FB2 |
| 1 | SLC1175-301 300nH | SLC1175-271MEC_COC | L1 |
| 2 | FTC201612S1R5MBCA 1.5uH | IND-SMD_L2.0-W1.6 | L2, L3 |
| 1 | SLC1175-271MEC 300nH | SLC1175-271MEC_COC | L4 |
| 19 | GRM188R61E106KA73D 10uF | C_0603_1608Metric | C2, C3, C8, C12, C24, C26, C38, C41 +11 |
Show 30 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 9 | TMK107B7105KA-T 1uF | C_0402_1005Metric | C4, C16, C21, C27, C44, C45, C48, C199 +1 |
| 2 | GRM155R71E472KA01D 4.7nF | C_0402_1005Metric | C5, C31 |
| 2 | GRM155R61H222KA01D 2.2nF | C_0402_1005Metric | C6, C32 |
| 8 | KGM05AR71C104KH 0.1uF | C_0402_1005Metric | C7, C18, C33, C51, C52, C53, C92, C94 |
| 2 | CC0805KRX7R9BB102 1000pF | C_0805_2012Metric | C9, C46 |
| 12 | CL31A107MQHNNNE 100uF | C_1206_3216Metric | C10, C11, C13, C14, C15, C102, C105, C107 +4 |
| 2 | GRM155R61A475MEAAD 4.7uF | C_0402_1005Metric | C19, C40 |
| 5 | GRM155R71H104KE14D 0.1uF | C_0402_1005Metric | C22, C37, C39, C42, C43 |
| 2 | CC0402KRX7R9BB333 33nF | C_0402_1005Metric | C29, C30 |
| 2 | CL21A226MPQNNNE 22uF | C_0805_2012Metric | C35, C36 |
| 3 | KGM05ACG1E330JH 33pF | C_0402_1005Metric | C47, C100, C103 |
| 16 | EMK105BJ105MV-F 1uF | C_0402_1005Metric | C63, C64, C65, C66, C67, C68, C69, C70 +8 |
| 1 | GRM1555C1H471JA01D 470pF | C_0402_1005Metric | C93 |
| 1 | CC0402JRNPO9BN101 100pF | C_0402_1005Metric | C101 |
| 2 | 120UF 120uF | CP_Elec_6.3x5.9 | C104, C106 |
| 2 | RC0402FR-0749R9L 49.9 | R_0402_1005Metric | R1, R10 |
| 2 | ESR10EZPJ1R0 1 | R_0805_2012Metric | R2, R21 |
| 2 | RC0402FR-0710RL 10 | R_0402_1005Metric | R3, R19 |
| 9 | RC0402JR-0710KL 10k | R_0402_1005Metric | R5, R6, R13, R16, R20, R24, R30, R37 +1 |
| 1 | RC0402FR-0730K9L 30.9k | R_0402_1005Metric | R12 |
| 2 | RMCF0402JT5K10 5.1k | R_0402_1005Metric | R14, R25 |
| 1 | RC0402FR-0713K7L 13.7k | R_0402_1005Metric | R15 |
| 1 | RC0402FR-0752K3L 52.3k | R_0402_1005Metric | R17 |
| 1 | RC0402FR-0720KL 20k | R_0402_1005Metric | R23 |
| 2 | RC0402FR-071KL 1k | R_0402_1005Metric | R26, R38 |
| 1 | RT0402BRD072KL 2k | R_0402_1005Metric | R27 |
| 2 | RC0402JR-070RL 0 | R_0402_1005Metric | R29, R32 |
| 1 | RC0402FR-075K6L 5.6k | R_0402_1005Metric | R31 |
| 1 | RC0402JR-074K7L 4.7k | R_0402_1005Metric | R39 |
| 2 | RC0402DR-0710KL 10k | R_0402_1005Metric | R45, R47 |
Bitaxe Flux - ENGINEERING DRAFT design files
The KiCad project lives in the Zayno/BitaxeFluxAstra repository on GitHub; these links point at the commit this page was built from.
Bitaxe Flux - ENGINEERING DRAFT: common questions
What microcontroller does the Bitaxe Flux - ENGINEERING DRAFT use?
The Bitaxe Flux - ENGINEERING DRAFT is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.
How big is the Bitaxe Flux - ENGINEERING DRAFT PCB?
The Bitaxe Flux - ENGINEERING DRAFT measures 147 × 90 mm, has 6 copper layers and is 1.6 mm thick.
How many components are on the Bitaxe Flux - ENGINEERING DRAFT?
144 components, from 50 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 Bitaxe Flux - ENGINEERING DRAFT 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 Bitaxe Flux - ENGINEERING DRAFT 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 Bitaxe Flux - ENGINEERING DRAFT 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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