Bitaxe v2.2: Open Source Bitcoin Mining Hardware & Firmware
Open source Bitcoin miner hardware and firmware using BM1397 ASICs.
- The bitaxe v2.2! Hashing just a hair under 400GH/s 12.5W.
- Standalone: can mine directly to your pool over WiFi. No External computer needed.
- Embedded: low cost, low maintenance, high availability, high reliability, low power.
- ASIC: based on the very efficient BM1397 from Bitmain.
- Versatile: solo/pool mining, autotune power/heat/efficiency.
- Open Source: All design files are provided.
Features
- ESP32-S3-WROOM-1 wifi microcontroller on board
- TI TPS40305 buck regulator steps down the 5V input to power the BM1397
- Maxim DS4432U+ current DAC digitally adjusts the BM1397 core voltage from 0.04V to 2.4V
- TI INA260 power meter measures the input voltage and current of the miner
- Microchip EMC2101 measures the BM1397 internal diode temperature. Also PWM controls the fan and monitors tach output.
- Two sweet RGB status LEDs
Current Status
- The hardware has been built and tested.
- Using cgminer on a separate computer, the bitaxe can mine in excess of 400 GH/s
- ESP32 miner firmware is still under development.
