Coffee warmer with built-in 700 GH/s miner – fanless and temperature-controlled
We present “My Coffee”, the ultimate coffee warmer with integrated Bitcoin miner with up to 700 GH/s!
No more cold coffee thanks to our new, innovative coffee warmer with built-in 700 GH/s (Solo-) miner. Our Swiss friends from dezentralshop.ch gave us the idea at the Swiss Bitcoin Conference: What to do with all the waste heat from the small miners – and why do we need these ugly fans at all?
We need a nice product for the desk. After a little bit more than six months it will be on your desk, the unbeatably quiet, temperature-controlled standalone miner for your coffee cup. Carefully manufactured for the modern technology enthusiast. This compact marvel measuring 105 mm x 105 mm x 42 mm is not just a coffee warmer; it is a mixture of elegance, innovation, functionality and yield.
Features
- High-quality materials: The bottom half is made from sustainably sourced and dried walnut wood for a natural and warm feel, while the top is made from smooth aluminum, providing a stylish and durable finish to your coffee cup.
- Efficient heating: The aluminum lid harnesses the waste heat from Bitcoin mining and keeps your coffee at a perfect 55 degrees Celsius, keeping your drink warm without excessive energy consumption.
- Built-in Bitcoin Miner: Harness the power of Bitcoin mining with the built-in miner that offers an impressive hashing rate of around 700 GH/s while using an efficient power consumption of just 23 W via USB-C. Mine Bitcoins while enjoying your coffee. Powered by Bitmain’s BM1398 chips.
- Advanced connectivity: Equipped with built-in WiFi, a web interface, and a configuration hotspot for easy setup and monitoring. Built-in NanoPi running open source Linux OS (Debian), i.e. You can install a Bitcoin node, Lightning and/or other services if you want.
- OLED Display and LED Lights: The 0.91-inch OLED screen on the front provides real-time updates and information, while the subtle LED lights underneath add a touch of elegance and atmosphere to your workspace.
- Customizable LEDs: Personalize your coffee warmer with controllable LEDs, allowing you to adjust the device’s glow to match your mood or decor.
- Dual-Function Buttons: Two buttons on the front allow for easy customization of functions and screen display, ensuring a user-friendly experience.
Note on the Hashrate
During the development process of Mein Coffee, we quickly realized that achieving the perfect balance between hashrate and temperature management is both an art and a science.
Mein Coffee operates on the principle of “target temperature” rather than “target hashrate.” This means that the device focuses on maintaining a constant temperature and dynamically adjusting the hashrate to avoid overheating. Our self-adapting algorithm ensures that the hashrate stays as high as possible without the temperature getting out of control.
Through extensive testing, we have developed a system for quantifying heat absorption efficiency that we call “hash value.” This metric represents the average hashrate over a 3-hour benchmark while maintaining a target temperature of 55°C. The results show how different items interact with the hotplate:
Bare hotplate: With nothing on it, the device achieves a hashrate of approximately 60 GH/s as the limited heat dissipation keeps the temperature stable.
Enamel coffee mug (full of coffee): The heat absorption properties of a full coffee mug allow the hotplate to operate at approximately 330 GH/s while maintaining the same target of 55°C. Different mugs/cups will have different hashrates.
Large heatsink + fan: By quickly dissipating heat from the surface, this configuration boosts the hashrate to an impressive 700+ GH/s at 55°C.
These tests highlight an important principle: the faster you can dissipate heat from the hotplate, the higher the hashrate you can achieve. Or in other words, the bigger the cup of coffee or tea in the morning, the bigger the reward. Stack Sats for Coffee – or vice versa.
My Coffee makes it easy to combine functionality with performance – keep your coffee warm, melt a scented candle or optimize mining with additional cooling solutions. Whether you’re a casual user or a hashrate enthusiast, this innovative device turns everyday heat into Bitcoin rewards.
Specification
- Power consumption: 28W via a standard USB-C charger
- Dimensions: 105mm x 105mm x 42mm
- Temperature range: 55 – 65 °C, configurable
- Hash Rate: About 700GH/s, depending on the target temperature set
- Connectivity: Built-in WiFi, web interface, WiFi hotspot for easy configuration
- Display: 0.91″ OLED screen
- Material: Walnut wood (base), polished aluminum (top)
Available from the end of January 2024. Can be pre-ordered now, free shipping to all countries in the European Union.
