Description
The LilyGo T-Display S3 (H577) is a 1.9-inch ESP32-S3 color LCD module with pre-soldered pin headers, the OEM display used in the NerdQaxe, NerdAxe, NerdMiner v2, and the entire Hammer miner lineup. The genuine LilyGo H577 is sold as a drop-in replacement screen, with authentic Sitronix ST7789V silicon, 16 MB flash, and 8 MB PSRAM, ready to flash and install with no soldering required.
Technical Specifications
| Component | Specification |
|---|---|
| Module | LilyGo T-Display S3, soldered-pin OEM (H577) |
| Manufacturer | LilyGo |
| Manufacturer SKU | H577 / XY230513 |
| MCU | Espressif ESP32-S3R8 dual-core Xtensa LX7 |
| CPU clock | Up to 240 MHz |
| Architecture | Xtensa LX7, 32-bit |
| Flash memory | 16 MB (128 Mb), QIO 80 MHz |
| PSRAM | 8 MB OPI (octal SPI) |
| Flash mode | DIO |
| PSRAM type | OPI |
| Wireless | WiFi 802.11 b/g/n (2.4 GHz), Bluetooth 5 LE + BT mesh |
| Antenna | Onboard PCB antenna |
| Display | 1.9-inch full-color IPS TFT LCD |
| Driver IC | Sitronix ST7789V |
| Resolution | 170 (H) × 320 (V) pixels |
| Display interface | 8-bit parallel I8080 |
| Backlight control | GPIO38 (LCD_BL) |
| Display power enable | GPIO15 |
| Buttons | BOOT (GPIO0), RESET, IO14 user button |
| USB connector | USB Type-C (data + power, USB 2.0 only, no PD negotiation) |
| USB stack | USB Serial / JTAG (CDC + JTAG) |
| Header | Pre-soldered 2.54 mm pin headers |
| Auxiliary connectors | STEMMA QT / Qwiic compatible, JST-SH 1.0 mm 4-pin (I²C), JST-GH 1.25 mm 2-pin (battery) |
| Battery support | Single-cell 3.7 V Li-Po via JST-GH connector |
| Battery charger | TP4054 (default 500 mA charging current) |
| Battery voltage detection | GPIO04 (analog) |
| Working voltage | 3.3 V (USB-C powered, 5 V input) |
| GPIO I/O pin count | 48 digital I/O |
| Analog inputs | 20 (ADC) |
| PWM channels | 27 |
| Interrupt pins | 46 |
| Communication | I²C, SPI, UART, native USB |
| Programming platforms | Web flasher (Chrome / Edge / Opera), Arduino IDE, MicroPython, ESP-IDF, PlatformIO, ESPHome |
| Default upload speed | 921600 baud |
| Default partition scheme | 16 MB Flash (3 MB APP / 9.9 MB FATFS) |
| Board dimensions | 61 × 26 mm |
| Weight | 14 g |
| Color | Black PCB |
| Cable required | USB 2.0 USB-A to USB-C data cable (charge-only cables not supported) |
| Operating frequency band | 2.4 GHz |
| Firmware as shipped | Blank from factory (browser-flashable in ~2 minutes) |
| Open hardware | Schematic, dimensions, and PinMap published on the official LilyGo GitHub repository |
| Country of manufacture | China (LilyGo factory, Shenzhen) |
| Ships from | Houston, Texas, USA |
| Warranty | 90-day Solo Satoshi warranty |
Compatibility
Drop-in physical replacement for every Bitcoin home miner that uses the LilyGo T-Display S3 H577 as its front-panel display, including:
- NerdQaxe+
- NerdQaxe++ Rev 6 / Rev 6.1
- NerdQaxe+ Hydro
- NerdQaxe++ Hydro
- NerdAxe Gamma
- The entire Hammer miner lineup (every SHA-256 and SCRYPT model in the Riversilicon Hammer family ships with the LilyGo T-Display S3 as standard)
- NerdMiner v2 builds.
- Other open-source ESP32-S3 miners that specify the H577 form factor
Two-Minute Browser Flash, No Soldering, No Driver Install
The screen ships blank from the LilyGo factory. Flashing runs entirely in your web browser:
- Connect the screen to your computer with a USB-C data cable. Charge-only cables will not work.
- Open Chrome, Edge, or Opera. Firefox and Safari do not support the Web Serial API and cannot flash ESP32-S3 boards.
- Put the board into download mode: hold the BOOT button, briefly press and release the RESET button, then release BOOT. The board re-enumerates on USB as a serial device, ready for the flasher.
- Visit the official web flasher for your firmware:
shufps.github.io/nerdqaxe-web-flasherfor Nerd*axe,nerdminer.io/flashorbitmaker-hub.github.io/diyflasherfor NerdMiner v2. - Click “Connect,” select the LilyGo board, choose your firmware version, and click “Install.”
- Unplug the screen, plug it into the USB-C cable on your miner, and the dashboard takes over.
- 1 × OEM LilyGo T-Display S3 (H577 soldered-pin), blank from the factory
- 1 X JST 1.25mm 2P
- Anti-static packaging
- Repair a failed display on a NerdQaxe, NerdAxe, Hammer, or NerdMiner v2 (cracked LCD, dead USB-C port).
- Stock a spare for a multi-miner fleet so a downed display does not cost you uptime.
- Build a NerdMiner v2 from scratch.
- Convert between firmwares using a single physical board and the official browser flashers.
- Develop your own ESP32-S3 project: the H577 is a full development board supporting Arduino IDE, MicroPython, ESP-IDF, and PlatformIO.
Future firmware updates can be performed over the air through the miner’s web dashboard. The browser flasher is only needed for the initial flash, recovery from a brick, or a switch between firmware projects.
What’s in the Box
USB-C cable not included. The cable already on your miner is reused for installation, and any USB-C data cable works for the initial browser flash. Replacement cables are stocked in accessories.
Buy This Replacement Screen If You Need To:
Order From Solo Satoshi
Order before 12:00 PM CST Monday through Friday and your replacement screen ships the same business day from Houston, Texas. Every H577 we sell is the genuine OEM LilyGo soldered-pin module with authentic Sitronix ST7789V silicon, full 16 MB flash, and 8 MB PSRAM. Add to cart above to get your miner back on the dashboard.
