NMMiner is an optimized BTC mining firmware designed for ESP32-based development boards. With one-click deployment through the NMMiner Flash Tool, it provides an accessible entry point into cryptocurrency mining.

• ESP32 development boards with the following chips:
  • ESP32-S3
  • ESP32-D0
  • ESP32-C3

• Optimized Performance

  • ESP32-D0: Up to 1,012 KH/s
  • ESP32-S3: Up to 390 KH/s
  • ESP32-C3: Up to 402 KH/s

• Management Tools

  • NMController Client: Windows desktop application (source code)
    • Pre-compiled installers (x64 and x86) available in the tool folder
  • NMController Web: Cross-platform Python implementation (source code)
    • Compatible with Windows and macOS

The following table shows the supported development boards and their performance metrics:

Boards equipped with only a boot button:

Boards with both boot and user buttons:

1. Automatic WiFi Connection: Upon power-on, the device attempts to connect to the previously configured WiFi network. If connection fails after 15 seconds, it automatically enters configuration mode.

2. Access Point Setup: Search for the free access point named nmap-2.4g (no password required).

3. Configuration Interface:

   • Mobile devices: You will be automatically redirected to the configuration page
   • PC/Desktop: Navigate to 192.168.4.1 in your web browser

4. Parameter Configuration: Configure your mining parameters following the on-screen instructions. Note that higher UI refresh values result in increased hash rates, and hash rates also improve when the display is turned off.

5. Accessing Configuration: You can return to the configuration page at any time using the button controls.

6. Saving Settings: After clicking Save, allow 10-15 seconds for the process to complete. Do not manually reset the device; it will restart automatically.

For single button boards:

1. Long press the boot button

For dual button boards:

1. Long press the user button

2. Follow the First-Time Configuration steps.

Step 1: Open the NMMiner Flash Tool in Chrome or Edge browser.

Step 2: Select your board model and initiate the firmware update. The tool will automatically:

• Download the latest firmware version from GitHub
• Configure flash parameters for your specific board

Note 1: If you're simply updating existing firmware, the above steps are sufficient. For first-time installations, firmware activation is required.

Note 2: If you lose your license, re-flash your device using the NMMiner Flash Tool to receive a new license automatically.

Step 1: After flashing the firmware, obtain your license following the on-screen instructions.

Step 2: Copy the license string into the license code field and click the activation button. Successful activation will display a confirmation message.

Step 3: For first-time installations, configure basic settings as shown below. Alternatively, you can configure these settings later using the button controls.

Step 4: Your miner is now ready to use!

Due to limited on-chip resources, some high-difficulty mining pools may reject connections from ESP32-based miners. The following pools support low-difficulty stratum connections suitable for this hardware:

• stratum+tcp://public-pool.io:21496 - Home page
• stratum+tcp://pool.tazmining.ch:33333 - Home page

• stratum+tcp://dgb-stratum.solominer.net:3333 - Home page

Both NMController Client and NMController Web provide identical functionality:

• NMController Client: Windows desktop application
• NMController Web: Cross-platform solution for Windows and macOS

The client automatically scans your local network to discover active miners:

Configure individual miners or groups of miners through the NMController interface (requires firmware v1.5.xx or later):

Access the web monitoring interface by navigating to your miner's IP address in a web browser. This interface provides functionality similar to NMController:

We are committed to expanding support for additional Arduino development board models. If you encounter any issues or have suggestions for improvement, please reach out to us.

• board support:
  • elecrow_esp32_display_24inch and elecrow_esp32_display_28inch.
• feature:
  • New clock style(remove second)
  • Merry Christmas surprise(Trigger on Christmas Day, exit via any screen touch), board support NMTV-154, CYD2.4 , CYD2.8 ,CYD3.5
• fix:
  • Block hit counter issue.
• remove:
  • None.
• optimize:
  • Stability Optimization.

• board support:
  • None.
• feature:
  • Date format adjustable by users in clock page.
  • 24h and 12h time format adjustableby users in clock page.
• fix:
  • Some potential restart risks.
  • Screen dead pixels on the loading page of miner.
• remove:
  • None.
• optimize:
  • Stability Optimization.
  • Some known issues.

• board support:
  • waveshare-esp32-s3-touch-lcd-35
• feature:
  • Resumes on the last page after a shutdown or crash.
• fix:
  • Some potential restart risks.
• remove:
  • None.
• optimize:
  • Coin price page alignment optimization.
  • Screen lights up gradually when you turn on the miner to avoid screen distortion.

• board support:
  • A new screen driver for esp32-c3-042-oled
• feature:
  • Multi-currency price page on miner screen.
• fix:
  • Oled device display.
  • License lost issue on waveshare-esp32-s3-lcd-147 and waveshare-esp32-s3-lcd-147b board.
• remove:
  • Market price enable option on config page.
• optimize:
  • Memory usage.

• board support:
  • None.
• feature:
  • A totally new web monitor page for each miner(monitor and config all other miners on this kind of page).
• fix:
  • Primary pool lost and recover logic.
• remove:
  • None.
• optimize:
  • Memory usage.
  • ssl connection.
  • Price color on clock page, green for raise and red for drop.

• board support:
  • Waveshare-esp32-s3-lcd-147(USB-A) and Waveshare-esp32-s3-lcd-147b(USB-C).
• feature:
  • When the primary mining pool active again, miner will switch back to the primary pool within 10s.
• fix:
  • Hit value issue on NM-TV clock page.
  • Screen can not wakeup in sleep mode on NM-TV .
• remove:
  • None.
• optimize:
  • Miner page UI for share : session best/all time best when enable "save status" option.
  • Miner page UI for share : session last/session best when disable "save status" option.

• feature:
  • None.
• fix:
  • Loading page stuck issue.
• remove:
  • None.
• optimize:
  • Clock page.
  • Memory usage.

• feature:
  • None.
• fix:
  • Wifi connection issues.
  • Market Price freeze issues.
• remove:
  • Last diff in miner page.
• optimize:
  • UI of clock page on T-display s3 dongle.

• feature:
  • Add NM-TV-154 board support, upto 1010kH/s.
  • Auto timezone.
  • Dark style of clock page.
• fix:
  • Some wifi connection issues.
  • Price display overflow issue.
• remove:
  • Share status save in nvs(only save best diff and block hit conuter).
  • Timezone in configuration page.
• optimize:
  • ESP32-D0WDQ6-V3 reversion 3 upto 1010kH/s.
  • ESP32-D0WDQ6 reversion 1 upto 857kH/s.
  • ESP32-S3 upto 390kH/s.
  • ESP32-C3 upto 396kH/s.
  • Random delay when connecting to Wi-Fi to avoid being denied access by the router.

• feature:
  • None.
• fix:
  • WPA group key exchange cause wifi disconnect issue.(This kind of issue is more common on MikroTik and Fritz!box.)
• remove:
  • None.
• optimize:
  • ESP32-D0WDQ6-V3 reversion 3 upto 993kH/s.
  • ESP32-D0WDQ6 reversion 1 upto 873kH/s.
  • The initial share difficulty starts from 0.0005

• feature:
  • New firmware release reminder on miner loading page and miner main page.
  • Pool url field on web monitor page.
  • Pool url display on miner clock page.
• fix:
  • When the screen is asleep, tapping the screen will wake it up(for CYD 2.4, 2.8, 3.5).
  • Log issue for pool switch.
• remove:
  • Temperature of CYD on web monitor page.
• optimize:
  • ESP32D0 upto 483kH/s.
  • Clock display to 12-hour format.
  • Memory usage.

• Add:
  • Screen touch driver to CYD 2.4, 2.8, 3.5 inch board.
• Fixed:
  • CYD ili9341 ui issue.
  • NTP and swarm issue.
• Improved:
  • None.
• Modify:
  • Clock page style.
  • Time zone allow float value input.
  • CYD has no temperature sensor, display real time instead.
  • NTP calibration interval 6h.

• Add:
  • board 'esp32 2432s024' support.
  • board 'esp32 3248s035' support.
  • board 'esp32 c3 0.42 oled' support.
  • board 'esp32 s3 0.42 oled' support.
  • board 'esp32 cam' support.
  • board 'wt32 sc01' support.
  • board 'lilygo t qt' support.
• Fixed:
  • Hashrate issues.
• Improved:
  • ESP32 d0 hashrate upto 470kH/s.
  • NMController client update to v0.4.1, *.ini file support.
  • NM-USB-Chain default page to meter page.
  • Add price to clock page.
• Modify:
  • Clock page time rolling to static.

• Add:
  • Configure NMMiner via the NMController client to make your life easier.
• Fixed:
  • Restart issue.
• Improved:
  • NMController client update to v0.4.
• Modify:
  • None.

• Add:
  • esp32-s3-geek support, upto 308kH/s.
• Fixed:
  • Local diff infinite issues.
• Improved:
  • NMController client update to v0.3.
• Modify:
  • None.

• Add:
  • None.
• Fixed:
  • Freezing issues.
• Improved:
  • NMController web server.
• Modify:
  • None.

• Add:
  • Led enable/disable option.
• Fixed:
  • Fallback wallet address save failed issue.
• Improved:
  • ESP32d0 upto 412kH/s
• Modify:
  • Get DNS from router.
• Known:
  • Freezing in some wifi environment.

• Add:
  • None.
• Fixed:
  • Reboot issue.
  • Freezing issue.
• Improved:
  • ESP32d0 upto 375kH/s
  • ESP32s3 upto 318kH/s
  • ESP32c3 upto 308kH/s.
• Modify:
  • UDP boardcast from 2s to 5s.
  • DNS fixed to 8.8.8.8 and 8.8.4.4

• Add:
  • esp32 dev kitc 32 ,upto 340kH/s.
• Fixed:
  • Reboot issue.
  • Freezing issue.
• Improved:
  • ESP32d0 upto 340kH/s, ESP32s3 upto 291kH/s, ESP32c3 upto 284kH/s.
• Modify:
  • None.

• Add:
  • None.
• Fixed:
  • Reboot issue.
  • Freezing issue.
• Improved:
  • ESP32 d0 upto 224kH/s.
• Modify:
  • Remove ssl connection.

• Add:
  • Fallback pool option.
• Fixed:
  • seeed xiao esp32 c3 configuration mode issue.
• Improved:
  • ESP32 s3 upto 255KH/s,ESP32 c3 upto 240KH/s.
• Modify:
  • SSL option, enable ssl connection in pool URL as "stratum+ssl://example-pool.com:12345"

• Add:
  • None.
• Fixed:
  • seeed xiao esp32 c3 configuration mode issue.
• Improved:
  • None.
• Modify:
  • None.

• Add:
  • support: seeed xiao esp32 c3 ,seeed xiao esp32 s3
• Fixed:
  • Pool connection time out.
  • Block counter issue.
• Improved:
  • None.
• Modify:
  • None.

• Add:
  • support: lilygo-t-display-s3 amoled
• Fixed:
  • None.
• Improved:
  • UDP broadcast protocol format.
• Modify:
  • Configuration mode time out logic.

• Add:
  • support: holo-cubic-25mm, upto 117kH/s.
• Fixed:
  • UTC issues.
  • Block counter flase count.
  • QR code issue.
  • Restart constantly.
• Improved:
  • Sahre accept rate.
• Modify:
  • Default Wifi change to 'NMMtech-2.4G'.
  • Default DNS get from LAN.

• Add:
  • support: TTGO T display, upto 90~92kH/s.
  • Feature: Led indicator for nm-bot-chain.
  • Feature: Screen brightness adjustment from config page.
• Fixed:
  • UTC issues.
  • Lilygo T Display s3 and TTGO T Display power supply issues.
  • Chip ESP32-D0WDQ6-v1 crashed issues, firmware compatible with ESP32-D0WDQ6-v3.
• Improved:
  • None.
• Modify:
  • User button long pressed to enter miner configuration for 2 buttons boards.
  • Logo 'lottery' to 'miner'.
  • Uptime 999 days maximum.

• Add:
  • Board support heltec-wifi-lora32-v2, upto 92kH/s.
• Fixed:
  • Nm-usb-chain gauge calibration.
  • Remove tempurature from CYD board, No tempurature sensor.
• Improved:
  • Breath led on Lilygo T dongle s3.
• Modify:
  • None.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi Lora32 v2
  • Heltec WiFi Lora32 v3
  • Heltec Wireless Stick v3
  • Heltec Wireless Stick Lite v3
  • Heltec Wifi Kit32 v3
  • NM Bot Chain v1
  • NM USB Chain v1
  • CYD(ESP32-2432S028R) with ILI9341 and ST7789 TFT driver.
  • Lilygo T Display-s3
  • Lilygo T Dongle-s3

• Add:
  • Board support CYD(ESP32-2432S028R) with ILI9341 and ST7789 TFT driver, upto 92kH/s.
• Fixed:
  • Restart issues.
  • Shortage of lvgl heap.
• Improved:
  • None.
• Modify:
  • Remove firmware version in stratum protocol.
  • Update NMControler, Added column sorting.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v2
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • NM-Bot-Chain-V1
  • NM-USB-Chain-V1(Coming soon to sale)
  • CYD(ESP32-2432S028R) with ILI9341 and ST7789 TFT driver.
  • Lilygo-T-Display-s3
  • Lilygo-T-Dongle-s3

• Add:
  • Board support Lilygo T Dongle s3
  • BTC market price(Disable default, enable this feature on config page)
• Fixed:
  • Miner reboot constantly.
• Improved:
  • UI
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • Lilygo-T-Display-s3
  • Lilygo-T-Dongle-s3
  • NM-Bot-Chain-V1(Coming soon to sale)
  • NM-USB-Chain-V1(Coming soon to sale)

• Add:
  • Board support NM Bot Chain V1
  • Board support NM USB Chain V1
  • Screen orientation option in configuration page.
• Fixed:
  • Valid block worng display, hashrate fall in worng state occasionally.
• Improved:
  • UI
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • All_usbcdc_screenless_esp32s3fn8
  • Lilygo-T-Display-s3
  • NM-Bot-Chain-V1(Coming soon to sale)
  • NM-USB-Chain-V1(Coming soon to sale)

• Add:
  • Board support Heltec Wireless Stick V3.
• Fixed:
  • None.
• Improved:
  • The initiation order.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • All_usbcdc_screenless_esp32s3fn8
  • Lilygo-T-Display-s3

• Add:
  • Board support Lilygo-T-Display s3.
• Fixed:
  • Readme and structure of tool folder.
• Improved:
  • Loading screen.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • All_usbcdc_screenless_esp32s3fn8
  • Lilygo-T-Display-s3

• Add:
  • Web ESP-Tool.
  • Support chip, esp32fn8.
• Fixed:
  • None
• Improved:
  • None.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3
  • all_usbcdc_screenless_esp32s3fn8

• Add:
  • License.
• Fixed:
  • None
• Improved:
  • Automatically enter configuration mode.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
  • Heltec wireless stick lite v3
  • Heltec Wifi kit 32 v3

• Add:
  • None
• Fixed:
  • Readme.md
• Improved:
  • None
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3

• Add:
  • Tool, NMController, Something like a LAN centralized monitoring client, Windows 10 or higher require.
  • Firmware, mining status broadcast to LAN.
• Fixed:
  • None
• Improved:
  • None
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3

• Add:
  • None
• Fixed:
  • License disappear issue when return to configuration page.
• Improved:
  • None
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3

• Add:
  • None
• Fixed:
  • Device would occasionally restart frequently when connecting to WiFi at startup.
• Improved:
  • None
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3

• Add:
  • Web Monitor, makes it easy to monitor your machine without any special client tools. You only need a phone or computer's browser.
  • Heltec WiFi lora 32 v3 firmware
• Fixed:
  • Some issues from WiFi.
• Improved:
  • Memory management.
  • Almost reaching 120KH/s when USB CDC disable.
• Baord support
  • Heltec Vision Master T190
  • Heltec WiFi lora 32 v3
• Next
  • Some screenless board support.

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 118kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi signal strength on screen.
• Fixed:
  • Memory leak issues.
  • Stratum nBits sector parse issues.
• Modify:
  • None
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 118kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi signal strength on screen.
• Fixed:
  • Mining status clean issues.
• Modify:
  • None
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 118kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi signal strength on screen.
• Fixed:
  • Configuration of user BTC address not effective issue.
• Modify:
  • Contact us, telegram group add.
  • Modify firmware update tools, make it easy to update firmware.
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 118kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi signal strength on screen.
• Fixed:
  • Some ssl issues.
• Modify:
  • Add some log on loading screen.
  • Hashrate upto 118K when screen off.
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 117kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi Signal Strength add.
• Fixed:
  • Some issues after full chip erase.
• Modify:
  • None
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 117kH/s
  • ssl connection support
  • Screen auto off in 60s
  • Real time clock
  • Configuration on websever, it's easy enough to build your first BTC Miner.
  • WiFi Signal Strength add.
• Fixed:
  • Fixed default WiFi parameters issues.
  • Fixed parameter of 'screen off time out'.
• Modify:
  • Some nvs handles, not compatible with v0.1.52.
• Baord support
  • Heltec Vision Master T190

• Features:
  • BTC solo miner base on esp32s3 series
  • Up to 117kH/s
  • ssl connection support
  • Screen auto off in 60s, can be setted from the Configuration Page
  • Real-time clock
  • Configuration on webserver, it's easy enough to build your first BTC Miner.
• Fixed:
  • First push
• Modify:
  • None
• Board support
  • Heltec Vision Master T190