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Espressif chips now run from the ESP8266 and ESP32 through the S, C, H, P, and E series, and the details live in many datasheets. The Chip Comparison Center puts one chip’s capabilities, side-by-side differences, requirement filters, application references, and matching development boards on a single page so you can choose a chip or a board faster.

This article introduces Velxio, an open-source, browser-based embedded simulator that runs real ESP32 firmware on emulated hardware. It explains how the simulator works under the hood, demonstrates LED, Wi-Fi, MQTT, and sensor based projects, and highlights support for multiple boards across the ESP32 family.