ESP32-P4 Smart HMI Wall Panel with 4" 720x720 Touchscreen Ethernet RS485 Relays
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ESP32-P4 Smart Wall Panel with Ethernet, 2 Relays and 4" Screen
An advanced panel based on ESP32-P4 with RISC-V architecture. Equipped with a square 4-inch IPS touchscreen display with high 720x720 pixel resolution, an Ethernet interface, and two built-in relays. The device is designed for mounting in a standard 86-type wall box, making it an ideal solution for smart home systems and HMI interfaces.
Example Applications
Smart Switch
HMI Interface
Smart Home Terminal
Key Features:
- High-performance ESP32-P4 microcontroller with RISC-V architecture (two high-performance cores + one low-power core)
- Memory: 32MB PSRAM, 32MB Nor Flash, 768KB HP L2MEM
- 4-inch IPS display with 720 × 720 pixel resolution
- Capacitive, 5-point touch panel, GT911 controller
- Rich image and audio processing capabilities: JPEG encoder-decoder, Pixel Processing accelerator, Image Signal Processor (ISP), H.264 encoder
- Built-in Wi-Fi 6 / Bluetooth 5 (LE) module based on ESP32-C6
- Peripheral interfaces: MIPI-CSI/DSI, USB 2.0 OTG, Ethernet port, TF card slot (SDIO 3.0), dual microphones, speaker output
- Built-in 2 relay channels (10A/250V AC) with opto-isolation
- Built-in isolated RS485 interface
- RJ45 100M Ethernet port
- Modular design, engineered for mounting in a standard 86-type wall box
4" IPS Touchscreen
170° wide viewing angle, excellent image quality, and high contrast. The capacitive, 5-point touch panel ensures intuitive and fast operation.
Built-in RS485 Interface and 2 Relays
The panel is equipped with industrial interfaces. The isolated RS485 port ensures reliable communication, and two relays with opto-isolation allow direct control of 230V AC devices.
RJ45 100M Ethernet Port and Installation Diagram
The RJ45 connector ensures stable wired communication. The panel is designed for easy mounting in a standard 86-type wall box (recommended depth >35mm when using the Ethernet port).
Audio Input/Output
Built-in ES8311 audio codec and ES7210 echo cancellation chip. Meets the requirements for daily audio applications.
Board Description
The device consists of a main board with the ESP32-P4 processor and a bottom board with execution interfaces.
Core Board
- ESP32-P4-Core
Integrated ESP32-P4NRW32, 32MB Nor Flash - ESP32-C6-MINI-1U-H8 Module
SDIO interface, extending with Wi-Fi 6 / Bluetooth 5 (LE) - 2.54 4PIN Pads
For programming the ESP32-C6 module - MIPI DSI Connector
For connecting a 4-inch MIPI display - RTC Battery Connector
For connecting an RTC battery - Built-in Microphones
Microphone inputs with echo cancellation - BOOT Button
Activates programming mode - Expansion Connector (2.0mm pitch)
Exposed IO pins, for connection to the bottom board - RESET Button
-
- PWR Power LED
- USB OTG Type-A Connector
USB OTG 2.0 High-Speed interface - USB TO UART Type-C Connector
For power, programming, and debugging - ES7210 Echo Cancellation IC
- IP101 Ethernet Port IC
- ES8311 Audio Codec
- MIPI CSI Connector
15Pin 1.0mm connector, for connecting MIPI cameras (available only in ESP32-P4-WIFI6-Touch-LCD-4B version) - Speaker Connector
MX1.25 2P, supports 8Ω 2W speaker - TF Card Slot
SDIO 3.0 interface
Bottom Board
- RJ45 100M Ethernet Port
- Relay Indicator LEDs
- Power Isolation Module
- Digital Isolator
- Opto-isolation
-
- 2-channel Relay
- Relay Screw Terminal
- RS485 Screw Terminal
- Power Screw Terminal
Wide input voltage range: DC 6V ~ 30V
Display Specifications
| Model | 4" IPS Touchscreen |
|---|---|
| Resolution | 720 × 720 |
| Communication Interface | Supports RGB565, RGB666, RGB888 |
| Display Panel | IPS |
| Touch Type | Capacitive |
| Touch Driver | GT911 |
| Brightness | 400cd/m² |
| Contrast | 1200:1 |
| Viewing Angle | 170° |
| External Dimensions (H×W) | 86.5 × 86.5 (mm) |
| Display Area (H×W) | 71.93 × 71.93 (mm) |
| Dot Pitch (H×W) | 0.0999 × 0.0999 (mm) |
| Colors | 16.7M |
Relay Specifications
| Specification | Contact Load Rating | ≤10A 250V AC or ≤10A 30V DC |
| Number of Channels | 2 | |
| Contact Type | 1 NO, 1 COM | |
| Isolation | Opto-isolation |
Dimensions
Package Contents
- ESP32-P4-86-Panel-ETH-2RO × 1
Note: 86-type wall box and screws are not included.
Wiki: www.waveshare.com/wiki/ESP32-P4-WIFI6-Touch-LCD-4B
www.waveshare.com/wiki/ESP32-P4-86-Panel-ETH-2RO
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