EleksCava – Wi-Fi E-Ink Display Dev Kit | ESP32 Development Board with RGB LEDs | Stackable Modular Design | Includes Demo Firmware
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This product is a pre-order item and is expected to ship before April 25th after placing your order.
Product Features
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ESP32-Based Open Hardware Platform
Powered by the popular ESP32 chip, EleksCava functions as a versatile development kit suitable for makers, engineers, and embedded system learners. -
E-Ink Display for Low-Power Visual Output
Features a high-contrast black-and-white e-ink screen, ideal for building low-power display projects. Sharp visibility and wide viewing angles make it suitable for data visualization. -
Wi-Fi Enabled + Web Configuration
Includes built-in 2.4GHz Wi-Fi module with browser-based configuration—no dedicated app required. Easily connect and manage via PC, Mac, or Linux. -
Integrated RGB Indicator LEDs
Three onboard RGB LEDs can be programmed for status feedback, alerts, or creative effects—expand your IoT and interface projects visually. -
Demo Firmware: Crypto Price Display (Optional)
A non-commercial firmware is preloaded for demonstration purposes, showing real-time cryptocurrency data via public APIs. Developers can flash custom firmware freely.
Product Description
The Eleksmaker EleksCava is an open-source development board built around the ESP32 platform. Designed for electronic enthusiasts and hardware developers, it features a crisp E-Ink screen, integrated Wi-Fi connectivity, and RGB indicators—all in a compact modular form.
Ideal for low-power display applications, this kit can be used in various IoT, information panel, or creative coding projects. Its 2.9-inch black-and-white E-Ink screen offers excellent visibility and extremely low energy consumption, making it perfect for persistent data displays.
The board includes three RGB LEDs and supports stackable installation using two custom mounting clips provided in the box. This enables the setup of multi-unit displays or vertical panels without cluttering your workspace.
EleksCava comes preloaded with a demo firmware that retrieves real-time cryptocurrency data from publicly available sources. This is intended solely for demonstration and testing purposes. Developers are encouraged to use their own firmware for production or commercial applications.
No app installation is required—everything can be configured via browser over 2.4GHz Wi-Fi. Powered via USB-C, EleksCava is ready to prototype, explore, or integrate into your next DIY idea.
Hardware Specifications
Core Components
- Main Controller: ESP32-WROOM-32
- Display: 2.9-inch black-and-white E-Ink screen
- LED: WS2812B RGB LED ×3
- Buttons: 3 touch-sensitive keys
- Buzzer: Passive buzzer
- Interface: USB-C (serial communication supported)
- Power Management: TP4056 charging controller
- Battery: 3.7V 1200mAh (603450)
Interface Descriptions
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Power Interface
- Charging IC: TP4056
- Power source: USB or battery
- Battery: 3.7V 1200mAh (PH2.0)
- Charge current: 1A
- Protection: Overcharge, overdischarge, short circuit -
USB Interface
- Type: USB-C
- Function: Serial communication
- Baud rate: 115200
- Use: Firmware upload, debugging -
Display Interface
- Protocol: SPI
- Refresh: Partial/full, 1–2s per cycle -
LED Interface
- WS2812B RGB LEDs
- Programmable brightness and effects -
Touch Button Interface
- Capacitive input
- Supports combination input with debounce -
Buzzer Interface
- Passive buzzer for alert tones
EleksCava – Redefining what an e-paper display can do.