RockBase IoT

NM-EPD-420 4.2 inch e-Paper ESP32-S3 Development Board WiFi Weather Station Dashboard AHT20 ES8311 Codec

$29.90 USD

~~$35.90 USD~~ $29.90 USD

$1.37 each

Sale Sold out

Taxes included.

颜色: 灰白

Product Features

The NM-EPD-420 is a fully integrated 4.2 inch tri-color ( B/W/R) e-Paper ESP32-S3 development board, specially designed for desktop smart weather dashboard, LoRa Desktop Station. Integrates ESP32-S3, e-ink display, AHT20 temerature and humidity sensor, audio input & output, Lithium battery charging management and multi expansion interfaces into the PCB.

E-Paper only sonsumes power when refreshing screen, keeps static content displayed without power supply, so the board can work for few weeks or few months with a single 3.7V Lithum battery.

The ESP32-Dashboard support weather, timeline, world clock, focus clock, agent and News.

Key Features

Features	Details
💬 ESP32-S3R8	240MHz Xtensa LX7, 16MB Flash + 8MB PSRAM
⚙️ WiFI 2.4G & BLE 5	Any event can trigger the Agent Loop and more Response can be as fast as milliseconds
🧬 4.2-inch E-Paper	Tri-color ( Black / White / Red)
📤 AHT20	temperature & humidity sensor
🧰 ES8311 +DMIC	QAudio codec + Microphone + 3W 4Ω Speaker
🧩 Complete expansion peripherals	TF SD Card, USB-C port, Lithium battery Charging, USER keys, Battery Key
🛠️ LoRa Module (optional)	HT-RA62 LoRa module ( SX1262 module)

Hardware Specifications

COMPONENT	SPECIFICATION
Main SoC	ESP32-S3R8 ( Xtensa LX7 32-bit, 240MHz )
Wireless Protocols	Wi-Fi 2.4GHz + BLE 5
Memory	16MB FLash + 8MB PSRAM
Interface	USB-C, TF Slot, Battery Interface
Operation Temp	-20℃ to 70℃
Certifications	FCC, CE