# ESP32-S3 Relay Display Controller (Component) ## Description ESP32-S3 relay controller with ILI9341 TFT touch display, PCF8574-driven 16x2 LCD, 4-channel relay outputs, and 4-layer 140 mm x 100 mm PCB baseline for placement and routing. ## Component Details - **Owner:** rainaman - **Created:** 3/29/2026 - **Last Updated:** 3/29/2026 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart TD PWR["Power Input and LM7805 5V"] --> MCU["ESP32-S3 Dev Board"] MCU --> TFT["ILI9341 TFT Display"] MCU --> TOUCH["FT6206 Touch Controller"] MCU --> LCD["16x2 I2C LCD"] MCU --> RELAY["Four Relay Driver Channels"] RELAY --> TERM["Relay Screw Terminal Outputs"] PWR --> LCD PWR --> TFT PWR --> TOUCH PWR --> RELAY ``` - **Implementation Details:** ESP32-S3 relay/display controller baseline: 140x100 mm 4-layer layout, 0.25 mm trace width, 0.2 mm keep out, ESP32-S3 DevKit, ILI9341 TFT, PCF8574 LCD backpack, 4 relay channels, LM7805 5V rail. - **Stars:** 1 - **Mount Type:** PCB --- *Generated from [https://www.flux.ai/rainaman/esp32-s3-relay-display-controller~f4](https://www.flux.ai/rainaman/esp32-s3-relay-display-controller~f4)*