Bitaxe
About the Bitaxe PCB
Bitaxe is an open source ESP32 PCB design by skot, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 56.5 × 99.8 mm, with 86 components from 45 distinct parts.
Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the 25MHZ, TXB0104RGYR, MCP1824T-1802E, MCP1824T-0802E and EMC2101. By type, the board carries 48 capacitors, 15 resistors, 11 ICs, 4 connectors, 3 transistors and 2 switches.
It belongs with the iot & wireless and displays & leds designs in this gallery.
From the project
Open source ASIC Bitcoin miner hardware
Main components on the Bitaxe
Bitaxe bill of materials (BOM)
86 components, 45 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 25MHZ 25MHz | O 25,0-JO32-B-1V3-1-T1-LF | U1 |
| 1 | TXB0104RGYR | TXB0104 | U2 |
| 1 | MCP1824T-1802E | SOT-23-5 | U5 |
| 1 | MCP1824T-0802E | SOT-23-5 | U6 |
| 1 | EMC2101 | TSSOP-8_3x3mm_P0.65mm | U7 |
| 1 | INA260 | TSSOP-16_4.4x5mm_P0.65mm | U8 |
| 1 | TPS40305 | TPS40305 | U9 |
| 1 | DS4432U+ | TSSOP-8_3x3mm_P0.65mm | U10 |
| 1 | RT9080-33GJ5 | RT9080-33GJ5 | U11 |
| 1 | ESP32-S3-WROOM-1 | ESP32-S3-WROOM-1 | U12 |
| 1 | BM1366_MODE1 BM1366_mode1 | BM1366 | U14 |
| 2 | CSD17311Q5 | CSD17311Q5 | Q1, Q2 |
| 1 | 2N7002K | SOT-323_SC-70 | Q4 |
| 1 | 32.768KHZ 32.768kHz | SC32S-7PF20PPM | Y1 |
| 1 | 54-00164 | BarrelJack_Wuerth_694106106102_2.0x5.5mm | J1 |
| 1 | CONN_01X02 Conn_01x02 | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | CONN_01X04 Conn_01x04 | 470531000 | J4 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J8 |
| 2 | GT-TC029B-H025-L1N | SW_CS1213AGF260_CRS | SW1, SW2 |
| 1 | SS310 | D_SMA | D1 |
Show 25 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 150NH 150nH | FP1005R1-R15-R | L1 |
| 9 | 0.1UF 0.1uF | C_0402_1005Metric | C1, C7, C9, C19, C20, C29, C33, C42 +1 |
| 23 | 1UF 1uF | C_0402_1005Metric | C2, C3, C4, C5, C6, C8, C10, C11 +15 |
| 1 | 330UF 330uF | CP_EIA-7343-31_Kemet-D_Pad2.25x2.55mm_HandSolder | C13 |
| 1 | 220UF 220uF | CP_Elec_6.3x7.7 | C28 |
| 2 | 6.8PF 6.8pF | C_0402_1005Metric | C30, C31 |
| 3 | 47UF 47uF | C_1210_3225Metric | C34, C36, C37 |
| 1 | 1UF 1uF | C_0805_2012Metric | C38 |
| 1 | 3.3NF 3.3nF | C_0402_1005Metric | C39 |
| 1 | 180PF 180pF | C_0805_2012Metric | C40 |
| 1 | 1.5NF 1.5nF | C_0805_2012Metric | C41 |
| 2 | 10UF 10uF | C_0805_2012Metric | C43, C51 |
| 1 | 470PF 470pF | C_0805_2012Metric | C45 |
| 1 | 220UF 220uF | CAP_2R5TPE220MAFB | C46 |
| 1 | 100UF 100uF | C_1206_3216Metric | C47 |
| 5 | 10K 10k | R_0402_1005Metric | R1, R4, R6, R7, R9 |
| 1 | 5.6K 5.6k | R_0402_1005Metric | R2 |
| 2 | 5.1K 5.1k | R_0402_1005Metric | R3, R5 |
| 1 | 1M | R_0402_1005Metric | R8 |
| 1 | 3.83K 3.83k | R_0402_1005Metric | R10 |
| 1 | 4.12K 4.12k | R_0402_1005Metric | R12 |
| 1 | 1.33K 1.33k | R_0402_1005Metric | R13 |
| 1 | 4.99K 4.99k | R_0402_1005Metric | R14 |
| 1 | 3.32K 3.32k | R_0402_1005Metric | R15 |
| 1 | 80.6K 80.6k | R_0402_1005Metric | R16 |
Bitaxe design files
The KiCad project lives in the skot/bitaxe repository on GitHub; these links point at the commit this page was built from.
Bitaxe: common questions
What microcontroller does the Bitaxe use?
The Bitaxe is built around the ESP32-S3-WROOM-1, from the ESP32 family.
How big is the Bitaxe PCB?
The Bitaxe measures 56.5 × 99.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Bitaxe?
86 components, from 45 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 design files?
From the skot/bitaxe 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 design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which skot chose for the repository.
Can I test firmware for the Bitaxe 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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