Nerdminer
Educational lottery miner based on ESP32. Essentially zero chance of finding a block, but a fun way to learn about mining. Completely silent, no fans.
Open Source Hardware
This miner is built on open-source hardware designs — transparent schematics published for anyone to audit, modify, and manufacture. No vendor lock-in, no proprietary firmware, and community-verified security.
Every Bitcoiner who cares about decentralization should own open-source mining hardware. It is the ultimate expression of hardware sovereignty — no single company controls the design, the firmware, or your ability to mine.
Explore the Bitaxe Hub →Open Source Miners United
Open Source Miners United (OSMU) is the community movement behind open-source Bitcoin mining hardware. The designs were published openly, enabling permissionless manufacturing worldwide — ensuring no single entity controls mining hardware production.
D-Central participates in the OSMU ecosystem by assembling open-source miners, carrying Bitaxe-compatible accessories, and supporting builders from Canada.
Shop Open Source Miners →Manufactured by D-Central
This device is assembled and quality-tested by D-Central Technologies in Canada. D-Central builds open-source mining hardware and related accessories, including heatsinks, cases, stands, and power solutions.
When you buy from D-Central, you get a device prepared by a team that works directly with Bitcoin mining hardware. Units are tested before shipping and backed by Canadian technical support and ASIC repair experience.
Supporting manufacturers like D-Central is how open-source hardware achieves real decentralization — multiple independent producers worldwide, each building from the same open designs, ensuring no single entity controls the supply chain. Your purchase directly supports this mission.
Shop D-Central Miners →Built for Solo Mining
Solo mining means mining independently — no pool, no shared rewards. One lucky hash wins the entire block reward. Low-power miners like this one are perfect for solo mining: the electricity cost is negligible, so you can run 24/7 as a perpetual lottery ticket.
Every hash has an equal chance. Every hash counts.
Solo Mining Calculator →Profitability Calculator
| Period | Revenue | Electricity Cost | Profit |
|---|---|---|---|
| Daily | $0.00 | $0.00 | $0.00 |
| Weekly | $0.00 | $0.01 | $-0.01 |
| Monthly | $0.00 | $0.05 | $-0.05 |
| Yearly | $0.00 | $0.61 | $-0.61 |
Heating offset estimates the value of heat replacing an electric space heater during heating season (~6 months/year in Canada). Actual savings depend on your heating setup and climate.
Solo Mining Estimate
Solo mining is a lottery. There is no guarantee of finding a block. These estimates are based on current network difficulty and your hashrate. Every hash has an equal chance.
Where to Buy the Nerdminer
D-Central Technologies
CanadaBitcoin Mining Hackers since 2016. Ships from Laval, Quebec.
Full Specifications
| Model | Nerdminer |
| Model Number | Nerdminer |
| Manufacturer | D-Central |
| Algorithm | SHA-256 |
| Coins Mined | Bitcoin (BTC) |
| Hashrate | 50 KH/s |
| Power Consumption | 1 W |
| Efficiency | 20000000 J/TH |
| Chip Model | ESP32-S3 |
| Chip Count | 1 |
| Cooling | Passive |
| Voltage Range | 5V USB-C |
| Operating Temperature | 0-60°C |
| Dimensions | 60x25x15 |
| Weight | 0.05 |
| Interface | WiFi |
| BTU Output | 3.4 BTU/hr |
| Equivalent Heater | Small personal heater (3 BTU/hr) |
| Daily Power Cost | $0.00/day |
| Monthly Power Cost | $0.05/mo |
| Circuit Requirement | Standard 120V 15A |
| Release Date | 2023-06-01 |
| MSRP | $29.00 |
| Status | Active |
Home Mining Assessment
Educational lottery miner based on ESP32. Essentially zero chance of finding a block, but a fun way to learn about mining. Completely silent, no fans.
The Nerdminer is a SHA-256 cryptocurrency miner manufactured by D-Central. It delivers a hashrate of 50 KH/s with a power consumption of 1W, achieving an efficiency of 20000000 J/TH.
Built on the ESP32-S3 ASIC chip, uses passive cooling, weighs 0.05 kg, measures 60x25x15.
With a home mining score of 35/100, this miner is best suited for dedicated mining spaces for residential use. It produces 3.4 BTU/h of heat output, making it suitable for supplemental space heating.
At 20000000 J/TH, the Nerdminer sits in the legacy efficiency tier, so it is most economical run as a space heater or for hobby and learning setups rather than for pure profit.
The Nerdminer is solo-mining capable, so you can point it at your own node or a solo pool for a shot at a full block reward, and its waste heat (around 3.4 BTU/h) can be ducted into a room, turning money you would otherwise spend on heating into hashrate.
View detailed specifications, real-time profitability calculations, and comparison data for the Nerdminer in our comprehensive ASIC miner database.
Open-source miner setup path
Match the board family, firmware, power supply, case, cooling, and solo-mining expectations before buying accessories or tuning.
Related Miners
NerdQAxe++
Bitmain Antminer S19 XP (140Th)
Ebang Ebit E9i
Innosilicon T2 Turbo+ 32T
Frequently Asked Questions
What are the current mining economics for the Nerdminer?
At $0.07/kWh, the Nerdminer currently shows an estimated daily net cost of $0.00 before pool fees and hardware cost. Lower electricity rates, network changes, BTC price changes, or useful heat recovery can change the result.
Can I mine Bitcoin at home with the Nerdminer?
The Nerdminer has a home mining score of 35/100. With 0 dB noise and 1W power draw, it may require a dedicated space like a garage, basement, or outdoor enclosure. Consider noise insulation and proper ventilation.
Can the Nerdminer heat my home?
The Nerdminer outputs approximately 3.4 BTU/hr of heat. For reference, a typical space heater produces 5,000-5,500 BTU/hr. All electrical energy consumed by the miner is converted to heat, making it 100% efficient as a heater. D-Central offers Bitcoin Space Heater builds designed specifically for home heating integration.
What power supply does the Nerdminer need?
The Nerdminer draws 1W of power. You need a power supply rated for at least 1W with appropriate voltage (5V USB-C). D-Central stocks compatible power supplies in our shop. Always use a quality PSU from a reputable manufacturer to protect the miner and wiring.