Posted on: November 4, 2025 By Bitaxemining Community Admin | Last Updated: April 20, 2026
The EPS32 (CYD) USB Bitcoin miner has gained popularity very rapidly as one of the simplest, least expensive ways to begin participating in a lottery-based mining pool. This tutorial will take you through the entire procedure, including common problems to watch out for during setup.
What Is a USB NM Lottery Miner?
This is a device that utilizes low power and uses a USB interface for mining Bitcoins using the ESP32 processor chip. The device joins a pool and mines using the lottery method.
This makes it perfect for:
- Studying the process of mining
- DIY projects
- Testing cryptocurrency arrangements
It is not designed for making profits.
What You Need Before Setup
To get started, you need:
- The provided USB A to C cable (some other cables will not work)
- 2.4 GHz WiFi connection (the 5 GHz band is not compatible)
- A Bitcoin wallet address
- A smartphone or a computer
Step-by-Step Setup
Here is a step-by-step guide to set up your USB NM lottery miner:
Step 1: Power On the Device
After inserting the cable, the miner will automatically power on. Use your smartphone to scan the QR Code on the screen to directly connect to the miner’s WiFi. If you are using a computer, the miner will appear on your WIFI network as “nmap-2.4g”. Simply select the network and enter the password: 12345678 to connect.
Step 2: Connect to the Miner’s WiFi
As soon as you connect to “nmap-2.4g”, the configuration screen will appear on your smartphone. Click on “Configure WiFi”.
Step 3: Select Your WiFi Network
Select the desired WiFi network name (SSID) and enter the WiFi password in the “Password” field. (Device only works with 2.4 GHz WIFI frequency.)
Step 4: Add Your Bitcoin Wallet Address
The pool address has already been filled in for you; however, you must enter your BTC wallet address into the “Your BTC Addresses” box. In case you haven’t set up your crypto wallet yet, you can create one for free using the Trust Wallet service. Just select Bitcoin from the assets drop-down menu, and then copy and paste your receiving address.
Step 5: Configure Device Settings
Choose your time zone, then choose the screen sleep timer. For instance, if you put in “30”, the display will be black within 30 seconds. This saves battery power. If you set the screen sleep timer to “0,” the LCD will always be on. Finally, click on “Save.”
Step 6: Start Mining
After saving, the device will flash “Config” for a few seconds, and then automatically start mining. You will know the device is mining when it displays your hash rate on the LCD.
Step 7: Check Your Mining Stats
If you want to see the stats of your mining machine while at home, simply enter the IP address of the miner in the web browser on your mobile or desktop PC. If you wish to access the stats of your mining machine when you are not at home, visit nmminer.com and enter your Bitcoin receiving address in the search box.
Editing Your Settings
If you made a mistake during setup, just type your device IP into your web browser, scroll to the far right of your screen, and click “edit”. This will give you access to your configuration settings. (Your device IP is located on the LCD screen of your device directly underneath the block counter, and just to the left of your hash rate.
Troubleshooting Common Issues
Here are some common issues and their solutions:
Miner Stuck on Loading Screen
If the miner gets stuck at “70%” on the loading screen, this may be an issue with your WIFI connection. Check that you are connected to WIFI, and that you’re on the 2.4 GHz channel (not 5 GHz). If you are certain you’re on the 2.4 GHz and it’s still not working, try unplugging the device from power for 60 seconds, and then plugging it back in. If none of this is working, it is also possible that your mining pool might have temporarily crashed. When pools crash, they are typically back up and running in just an hour or two. If the pool has crashed, see “device reset” below; it’s very easy to fix.
Screen Timeout
The screen goes dark at whatever interval you designated when you configured your device, but you can wake up the device at any time by pressing the “boot” button underneath the device for 1 second. The blue status light underneath the device is the indicator that the device is still mining, even when the screen is dark. You can also check your mining stats by typing the IP address of your solo lottery miner into your web browser, or by visiting solobtc.nmminer.com and typing your Bitcoin receive address into the search bar. Bear in mind that stats on pool sites are often inaccurate; the most accurate stats will be shown on the device itself.
Miner Won’t Power On
Make sure you are using the USB cable that was included with your USB Bitcoin miner. The device can only be powered with a USB-A to USB-C cable, which is included. Other USB cable combinations will not work; for example, a USB-C to USB-C connector cannot be used. If you have chosen to install the protective case that is included, make sure all the screws on the case are properly aligned and screwed in securely before attempting to power the unit on.
Check Mining Pool Status
If you have followed all these instructions correctly and your USB Bitcoin miner is still not hashing, check the pool status at solobtc.nmminer.com. The mining pool does crash occasionally, and this is not anything wrong with your device. If the pool is crashed, simply wait until the pool is up and running again to continue mining, which is typically no more than just a few hours. If you have confirmed the pool is up and running again, but your device is still not hashing, you’ll need to reset your device.
Reset Your Device
To reset your device, press and hold the white “boot” button located underneath the device for 5 seconds to re-start device (see diagram below). Upon restarting, your USB lottery miner will automatically reconnect to the mining pool and start hashing. You will not have to reconfigure your device.
FAQs
What should I do if I forget my WiFi settings?
If one is unable to access their device because of wrong WiFi settings, then resetting it will enable the device to access it again without requiring any additional configuration.
Can I use a mobile hotspot instead of home WiFi?
Yes, as long as it is 2.4 GHz WiFi. There are some mobile WiFi that operate on 5 GHz, so you may want to change it.
Conclusion
Configuring the EPS-32 (CYD) USB NM lottery miner is relatively easy, which makes it perfect for beginners who want to learn more about Bitcoin mining. There are several easy steps that need to be performed in order to connect the hardware and participate in the lottery process. Since the configuration is automatic, setting it up requires no experience at all.
However, it should be understood that this particular miner was designed for educational purposes and not for earning. In other words, do not expect the USB NM Lottery Miner (ESP32 / CYD) to generate any profits since it will most likely generate very little. Nevertheless, by knowing how it operates and configuring it correctly, you will definitely enjoy mining.
