shufps / 0xaxe

0xaxe

0xAxe is a 16-ASIC-BM1366 Miner based on the QAxe

rev1: not tested
rev1.1: working but needs some manual fixes
rev1.2: should be working without fixes, but not tested yet.

0xAxe is working (see screenshot at the end of the page to get an impression what to expect) 🥳

note: The 0xAxe is not a stand-alone device because it only supports USB but it can be run connected to a Raspberry Pi without problems. Also multiple devices can be connected to a single Pi.

ASICs

The 0xAxe uses 16 ASICs of type BM1366

Compilation (Bootloader or CMSIS-DAP)

# install curl
sudo apt install curl

# install rust
curl --proto '=https' --tlsv1.2 https://sh.rustup.rs -sSf | sh

# add to ~/.bash.rc (afterwards, opening a new terminal is needed)
echo 'source "$HOME/.cargo/env"' >> ~/.bashrc

# clone repository
git clone https://github.com/shufps/0xaxe

# clone submodules
cd 0xaxe
git submodule init
git submodule update

# add rust target for STM32L0 variants
rustup target add thumbv6m-none-eabi

# build firmware for L072
cd firmware/fw-L072KZ
./build.sh

Installation via USB Bootloader on board with BOOT button

The STM32L072CB variant has an integrated DFU Bootloader that starts when pressing the BOOT button during reset.

Afterwards the firmware can be flashed via dfu-utils:

# install cargo-binutils and llvm tools
cargo install cargo-binutils
rustup component add llvm-tools-preview

# create the firmware.bin
DEFMT_LOG=info cargo objcopy --release --bin qaxe -- -O binary 0xaxe.bin

# install dfu-utils
sudo apt-get install dfu-util

now start the stm32 in DFU mode by pressing `boot` 

# after booting, list the devices
dfu-util --list

# flash the binary
dfu-util -a 0 -s 0x08000000:leave -D 0xaxe.bin

Installation via CMSIS-DAP Programmer

note: Using CMSIS-DAP and PicoProbe is only interesting for developers trying to alter the firmware.

As programming/debug adapter the Picoprobe firmware running on a Raspi Pico works best:
https://github.com/rp-rs/rp2040-project-template/blob/main/debug_probes.md / https://github.com/raspberrypi/picoprobe/releases/tag/picoprobe-cmsis-v1.0.3

There also is a little board with only 3 parts that gives a nice low-cost solution to flash the Qaxe:
https://github.com/shufps/raspi-pico-dap

On rev3 there should be the option to boot the stm32 (by pressing the boot-button on reset) into DFU-Bootloader mode what makes flashing via USB and without CMSIS-DAP programmer possible.

Flashing

After the source was compiled it is flashed by:

# build firmware for L072
cd firmware/fw-L072KZ
# run firmware (this also flashes it to the stm32)
./run.sh

Mining Client

Stratum Mining Client:
https://github.com/shufps/piaxe-miner

Misc

If you like this project and want to support future work, feel free to donate to: bc1q29hp4fqtks2wzpmfwtpac64fnr8ujw2nvnra04