LILYGO T-Keyboard S3 Pro Default Firmware and I2C Expansion Mode
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LILYGO T-Keyboard S3 Pro Default Firmware and I2C Expansion Mode
This is an upgraded version of the T-Keyboard-S3 project called T-Keyboard-S3-Pro. The upgraded T-Keyboard-S3-Pro eliminates the external expansion interface from the original version and introduces four magnetic connection interfaces with quick connectors.
These magnetic interfaces allow multiple T-Keyboard-S3-Pro units to be connected simultaneously (up to 6 units, with the maximum brightness of the onboard LED reduced to 10 when multiple units are connected).
An additional screen is added to the original four, giving a total of five screens. The fifth screen position on the main unit can be replaced by a rotary encoder. It should be noted that due to the long-distance wiring of the hardware, there are some limitations in the direction of expansion of the board.
Only one device can be added to the left and right of the main unit, and up to two devices can be added downwards (with a USB interface blocking expansion). This results in a 2x3 grid layout, for a total of 6 devices.
Specifications
| MCU1 | ESP32-S3R8 Dual-core LX7 microprocessor |
| Wireless Connectivity | 2.4 GHz Wi-Fi & Bluetooth5 (LE) |
| Development | Arduino |
| Flash | 16MB |
| PSRAM | 8MB |
| MCU2 | STM32G030F6P6 |
| Flash | 64kb |
| PSRAM | 8kb |
| Onboard Button | Reset Button + WS2812 + Encoder |
0.85 inch All ViewTFT LCD X 4
| Resolution | 128(H)RGB X 128(V) |
| Drive IC | GC9107 |
| Active Area | 15.2064(H) X 15.2064 (V)mm |
Product Details
Include
T-Keyboard S3 Pro
Slave Keyboard
Effective Date: March 27, 2025
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