The BitAxe is a fully open-source ASIC Bitcoin miner.
- They have sold more than 2500 devices
- They pioneered the first pool with net negative fees
- They have a strong community, primarily on Discord and Twitter
- Currently testing six ASIC chips working in parallel on a single device.
Here's a German podcast that delves into the topic:
https://nodesignal.space/2024/03/23/nodesignal-talk-e174-bitaxe-open-source-bitcoin-mining/