# LilyGo-T3S3-LCD-ShellySender

Simple LoRa button transmitter for the LilyGo T3S3 SX1262 with OLED display.

## Features

- One-button ON/OF toggle
- LoRa packet transmission
- OLED status screen
- Transmission counter
- Configurable RF profiles

## Hardware

- LilyGo T3S3 SX1262
- SSD1306 OLED 128x64
- Built-in button (GPIO0)

## Payload Format

```text
MG64738|ON
MG64738|OF
```

## RF Profiles

### Shelly RF

- 865.000 MHz
- BW 125 kHz
- SF12
- CR 4/5
- Sync Word 0x12

### MeshCore Switzerland

Available in source code as alternative profile.

## Display

Status screen:
- Frequency
- Bandwidth
- Spreading Factor
- Coding Rate
- Sync Word
- Transmission counter
- Current payload

Transmit screen:
- Sending status
- Payload
- Result

## Library

- RadioLib
- Adafruit SSD1306
- Adafruit GFX

## Platform

PlatformIO / ESP32-S3