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Heltec Automation

Heltec Bitcoin Miner - NMMiner USB Chian Solo Lottery Miner with 387.5 KH/s | ESP32-S3 Plug & Play Crypto Miner with 0.96" Display, Low Power, WiFi/Bluetooth, Real-Time Monitoring & USB Tester

  • Based on 122 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Aug 12
Order within 18 hours and 43 minutes
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Color: Green


Features

  • Low-Cost Bitcoin MinerExperience the thrill of Bitcoin Solo Lottery mining at an extremely low entry cost. Powered by a deeply optimized ESP32-S3 chip with a hash rate up to 387.5KH/s, it continuously buys you a ticket of hope.
  • Unique USB Chain DesignMultiple crypto miner can be easily daisy-chained via USB-A interfaces, requiring only one power supply. Build a clean and efficient BTC Lottery Device Chain for combined hashing power and centralized management.
  • Dual-Mode Mining & Real-Time MonitoringSwitch between bitcoin solo miner mode or a desktop clock mode (mining runs in background) with one click. The built-in high-precision USB tester monitors device power consumption (5-20V/0-6A), offering both utility and fun.
  • Open-Source & Plug-and-PlayThe bitcoin lottery miner is easy setup with the official Web Flash Tooljust configure Wi-Fi and your Bitcoin address via a browser. Also compatible with Arduino/Platform.io, making it a versatile ESP32 development board for hobbyists.
  • Low Power & Cluster ManagementOptimized for energy efficiency. Use the free NMController software (Windows/Mac) to easily manage and monitor multiple nerdminer within your local network.

Description

Heltec, represents a humble and sincere greeting to technology. Since 2014, we have been committed to offering highly reliable wireless and loT products to developers and businesses worldwide. Every product we offer is not just hardware, but a complete solution. Heltec can help you quickly build stable and efficient application scenarios,allowing technology to truly serve the real world. Do I need a computer or extra equipment for mining? No extra equipment is needed! Only a USB power supply (5V-3A) and a WiFi network are required. It takes only 3 steps to set up, making it easy for beginners. Do I need multiple power supplies when using multiple miners? It supports chaining multiple bitcoin miners, requiring only one 5V-3A power supply. Hash rate is cumulative, and wiring is simple, resulting in very low deployment costs for multiple units. How do I manage multiple solo miners? Through the official NMTech NMController tool (Windows client requires .NET Framework, web version requires Python environment), you can monitor hash rate, voltage, and operating status in real-time within the local area network. Does the firmware need activation? What if I lose it? No activation required! The firmware can be downloaded from GitHub (NMminer1024) or the web-flash tool. If lost, it can be restored with one click using the tool, without any extra cost.

Brand: Heltec Automation


Model Name: DL-78-1


Connectivity Technology: Wireless


Included Components: USB Cable


Operating System: Windows, macOS


Connectivity Technology: Wireless


Operating System: Windows, macOS


Processor Brand: Espressif


Wireless Compability: 802.11bgn


Compatible Devices: Personal Computer, Laptop


Brand: Heltec Automation


Model Name: DL-78-1


Built-In Media: USB Cable


Unit Count: 1 Count


Item Weight: 0.03 kg


Item Type Name: NM USB Chain


Manufacturer: HELTEC AUTOMATION


Model Number: DL-78-1


Mfr Part Number: DL-78-1


Warranty Description: 1 Year Manufacturer Limited


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Its the router not the miner
Color: White
It works but theres a catch if your getting o kh/s its most likely your router it thinks your being spammed on the port your trying to use and so its dropping the packets and not telling you you will need to move it to a dmz on the router or shut down the security feature or get a solo miner friendly router for these to work ... show more
Reviewed in the United States on July 22, 2026 by mike musick
    • Doesn't Actually mine anything at all just for show.
Color: Pink
Review Image by Sharon
Review Image by Sharon
Review Image by Sharon
Got this for fun. Initially it didn’t even work. I was able to connect to the internet and add my BTC address but it wouldn’t finish the initial setup. Was driving me nuts. I was determined to make it work. Reset it probably about 3 or 4 times. Ended up changing the preset pool because the problem was the one that was preloaded into it didn’t work. I Love that this is pink and matches my desk setup excited to have this cool little miner on my desk that hopefully strikes gold & wins big. Have patience. It does work but because it comes without a manual you have to just kind of tinker with it and figure it out. You can reset it by pressing and holding the top button. Update- After verifying to see if it was actually mining it does not. It's just a toy for show an expensive miniature alarm clock. Definetly Returning. Total Scam. It's a lottery miner that doesn't actually mine anything at all. ... show more
Reviewed in the United States on February 1, 2026 by Sharon
    • No instructions - but, I did figure it out.
Color: Yellow
No instructions. Comes preset with some unknown BTC wallet address - so, if you do not set that to yours you will never get the reward if it does happen. Had to use trial and error to eventually figure it out. Nice to see the crypto prices on the screen as a monitor. Here is the process to get it working: plug into a USB power port, press the button on the top, change mobile phone wifi to the network name of the miner. The config page loads, there you can set the miner to use your home wifi network with the password, BUT once that is connected, you need to load the real config page by entering the miner's IP address (like: 192.168.1.100) into your browser and then you can edit the BTC wallet address. It is also good to see that it is operating. CAUTION: if you press the button on top of the miner you can inadvertently clear the wifi settings and then you have to do it all over again. It seems to have a mind of it's own. It either changes screens or resets config. I have noticed that if you unplug it and plug it back in, it reboots with its wifi and wallet settings retained. ... show more
Reviewed in the United States on January 26, 2026 by Jason M
    • Fun toy, can show pictures,weather,crypto ticket and more.
Color: Black
Review Image by TechManTy
Fun toy, not anything to make money off of. I needed a clock and a crypto ticker, format pictures to 240x240 or they will show odd. As far as safe who knows! VLANS FTW!
Reviewed in the United States on July 18, 2026 by TechManTy
    • Want to waste 9 dollars right now?!?! Buy this.
Color: Black
Review Image by YouWantedReviews
Not strong enough to actually mine, you can get it and install it but it literally just can’t do enough to help you mine coins, even if you flash the device. If you want an expensive yet extremely cheap clock with no inherent mining value. This will be compatible with being poor. To setup a mining operation to get one to crack a block you’d need millions of them and even then they aren’t compatible with other miners, zero compatibility. No battery, and not functional. ... show more
Reviewed in the United States on July 20, 2026 by YouWantedReviews
    • Best crypto budget lotto miner, start with this one
Color: Yellow
This is a very good cheap intro to crypto, device does work and operates at a slightly higher hash level level for the price point. Unfortunately, not sure if the devices that I have are just a little bit problematic, but they do reset themselves about once a week and have to be re-sync to the network. I have quite a few of these and they are fun to give out to family and friends. What’s planning on purchasing more but I’m not so certain given the fact that the ones I’m currently testing and have been running seemed to need to be fixed about once a week out of five total that I have currently only one of a different model and design stays connected and doesn’t require extra fiddling. Hopefully I got one or two bad ones and if I look into getting more, I will get a better stock. ... show more
Reviewed in the United States on July 20, 2026 by Darth Nefarious
    • Use the Taz pool
Color: Green
After millions of visits to reedit, chatgpt troubleshooting, shouting at the gateway login in screen for the device, and about 4 gallons of tears I finally figured out how to get this thing to actually work. 1.stratum+tcp://public-pool.io:21496 <----never works, you will get to about 80-86% connection progress and get stuck on pool connection and never connect in. 2. Your wifi info you put in did save even though when you go back to the info section of the gateway page for the device shows nothing. Rule of thumb is that if you make it to a pool connection stage that means it has accepted your wifi info and connected to the internet otherwise you would be able to attempt the pool connection 3.Use the NM ESP Flash tool, to get your computer to recognize the device hold down the little button WHILE you plug it into usb, you will know you did it right because the screen will just show black and a new COM device will show up when you go to update the firmware with the tool, for me it was COM3. 4. Use firmware version 1.1.01, i prefer this version because it wont just say "Pool Connect" for the status and will actually say "Pool Connect <pool name> 5. MOST IMPORTANT USE stratum+tcp://pool.tazmining.ch:33333 it connected instantly for me and is running 100% stable. 6.Dont really pay attention to the provided instructions they are really incorrect. And don't worry about that license nonsense you see either you don't need it just follow my instructions. 7.Don't leave the password field blank in the gateway for the pool use "x" without the quotes and no space before or after 8.Plug it in and let it work Update: So i have come to understand the operations of these devices a little better. I have found out how to get them functionally operating and have mine going with a uptime currently around 32 hours. If you want to view your stats connect to the same network the device, then punch into a web browser the device IP that your screen displays. I just downloaded a the "NM Controller" software that essentially does the same thing except in a program not a webpage. The wepage looks exactly like the one in the images they provided.My ip was like 192.168.1.27 or something like that, it will be a diffrent ip then the one you used at the wifi configuration page incase you cant read the screen. On a final note, you dont have to use the tazming pool either just search on google for a "Lotto Miner Pool" i switched my pool to stratum+tcp://ss.antminer.com:3343 or port 3333 I THINK just look it up and see what you like. Also ask chatgpt for recommended pools as it was a life saver because im well versed in python but C is a lanuage as ancient as sumarian culture thats annoying. Oh also, if you want to make your own antminer it's super duper easy just buy a esp32-s3 and you can essentially use the firmware tool website to dump on the info. Personally i had chatgpt write up a firmware thats custom with my own wificonfig page and coded to be pinned out for a esp32-s3 and had it put in some coding for a ssd1306 display to show the same kind of information on the device. Just tell it to be sure to add the "stratum protocols" for mining which is just basically the part on how in connects to the pool and such. After that check your new webserver and screen. Depending in your pool aswell you might be able to hop on their website and see all the miners currently in the same pool and your device name should popup or wallet or matching stats. Its kind of neat to verify its actually working that way. Cheers prospectors! ... show more
Reviewed in the United States on February 16, 2025 by Justin K.
    • Would recommend
Color: Yellow
Review Image by raymond
Woooo this is tiny! Great to have on your desk. What’s interesting is that it seems to out perform my larger nerdminers! It was easy to set up. The price was great. Would recommend at least one
Reviewed in the United States on December 14, 2025 by raymond

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