Bitaxe Ultra

(1 customer review)


Condition: New
Hashrate: 400-550 Gh
Power: 11-13 Watts
Efficiency:22 J/T
Location: St. Louis, MO

Availability: In stock

SKU: ATBTAXU Categories: , Tags: , ,

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Quantity 3 - 910 - 2425 - 99100 +
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Price $247.76$246.51$244.02$241.53

Bitaxe Ultra

Bitaxe is a fully open-source hardware Bitcoin ASIC miner. Ultra is the 3rd major revision of the Bitaxe that now includes the BM1366 ASIC chip from Antminer S19XP. A 5V DC power supply with 2.1/5.5mm barrel jack connector is included with Bitaxe Ultra.

 Powered by the AxeOS, an open-source firmware that gives you full control over your mining. Change settings and monitor performance on a clean web-interface. 


  • 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 BM1366 from Bitmain.
  • Versatile: solo/pool mining, autotune power/heat/efficiency.


  • ESP32-S3-WROOM-1 wifi microcontroller on board
  • TI TPS40305 buck regulator steps down the 5V input to power the BM1366
  • Maxim DS4432U+ current DAC digitally adjusts the BM1366 core voltage from 0.04V to 2.4V
  • TI INA260 power meter measures the input voltage and current of the miner
  • Microchip EMC2101 PWM controls the fan and monitors tach output. Measuring internal die temp isn’t working.
  • 0.91″ SSD1306 OLED I2C Display Module

Comes with 14 day full refund/return Altair warranty.

Additional 1 year replacement or repair warranty applies (void if the item shows signs of overheating or physical damage)
We will provide any help needed for setup or technical support to get you hashing. 

Setup Instructions

  1. Attach the display on the display header on Bitaxe PCB
  2. Plug Bitaxe into a 5v power supply, 3A minimum 5A recommended.
  3. Bitaxe will now attempt to connect to a default network, which it will not find. To configure the Bitaxe use a WiFi capable device such as a Phone or Laptop and search for the new WiFi Access point Bitaxe_XXXX. Connect to the Bitaxe SSID and you should be prompted for or taken to the web portal. If this does not happen after you connect to the Bitaxe, open your browser and visit
  4. When you see the AxeOS web portal click on the ‘settings’ button
  5. Configure the WiFi SSID and Password for your local WiFi network (Note: Bitaxe is not compatible with 5Ghz Wifi, it only works with 2.4Ghz Wifi)
  6. Update the pool url, port and user to your preferred pool. 
  7. Click Save, then click restart to apply the changes.
  8. Done! If everything is configured correctly your bitaxe will start mining. You can re-vist and reconfigure the Bitaxe on your local network by visiting the IP address displayed on the http://device.You can also press the ‘boot’ button on the device to enable the WiFi access point and connect to it directly at any time. Pressing the ‘boot’ button again will disable the access point.

Frequenty Asked Questions

This is a learning device aimed at makers, tinkerers and hardware enthusiasts. Low noise, Wifi Connectivity and the ability to run this without connecting to a computer make it an ideal home miner. Profitability will depend on many factors such as power cost, bitcoin price etc.

Temperature in 0-80°C range are OK. 

Mining efficiency drops with rising temperature, so ideally you want this temperature under 65C. 

The minimum payout on most bitcoin mining pools is too large for sub petahash mining operations. Bitaxe is better suited for lottery mining for a chance at winning 6.25 BTC block reward on solo mining pools like ckpool and kano pool.

While the odds of hitting the block lottery on a single chip ASIC miner are low, it happens more often than one might imagine. There are documented instances of people hitting a BTC block with comparable devices like the Gekkoscience Compac F. 

BTC donation address: bc1qfc5fgpy96z0q6ltvh99pcujec9mwzugv3zcste

Weight 0.5 lbs
Dimensions 6 × 6 × 2 in

1 review for Bitaxe Ultra

  1. duarteb (verified owner)

    Fast delivery to France from USA in 3 days
    Thanks a lot

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Bitaxe Ultra

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