This article introduces Cirkit Designer’s simulation architecture for ESP32 and ESP32-S3: an instruction-accurate emulator built from scratch in Rust, compiled to WebAssembly, and connected to simulated hardware in the browser. We’ll look at how compiled firmware executes and how it interacts with simulated peripherals.
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.
