Electronic, 3D printing and embedded programming
This article shows how to build a simple weather station using an ESP32 and a 4.2″ SSD1683 eInk display, powered by the GxEPD2 library and the OpenWeatherMap API. A low-power project that displays real-time temperature, humidity, wind, and pressure.
Continuing our previous tutorial on configuring the ESP32 SSD1683 display and wiring, this article dives into text and shape rendering, demonstrating font scaling with setTextSize(), custom GFX fonts via setFont(), and drawing lines, rectangles, circles and rounded shapes. We’ll also cover converting images to 1-bit byte arrays with the online generator and displaying them on the E-Ink screen.
ePaper displays offer ultra-low power consumption and paper-like readability, perfect for battery-powered and outdoor devices. The SSD1683 controller handles timing, waveforms, and pixel updates for crisp, ghost-free images. Learn how to connect an SSD1683 panel to an ESP32 with GxEPD, configure SPI, set display parameters, and perform full or partial updates on a CrowPanel 4.2″ HMI also.
CrowPanel ESP32-S3 4.2” E-paper HMI Display: high-resolution pinout, datasheet and specs
