Set of 4 ESP32 S2 Mini V1.0.0 development boards designed for WiFi IoT applications. Compact, ready-to-use modules that simplify prototyping and small-scale deployment. Key benefits Faster development with MicroPython: program in Python to reduce development time, iterate quickly, and test firmware without complex toolchains. Enough storage and RAM for real projects: 4 MB flash for firmware and file storage plus 2 MB PSRAM to improve runtime performance and buffer network or sensor data. Ready for WiFi IoT use: built around the ESP32S2FN4R2 chip from the ESP32S2 series to provide WiFi-capable MCU functionality in a mini form factor. Pack of four: get multiple identical boards for parallel prototyping, multi-node demos, or small deployments without sourcing individual modules. What makes it stand out Balanced memory configuration: the 4 MB flash and 2 MB PSRAM combination supports more complex MicroPython applications, larger libraries, and better runtime responsiveness compared with lower-memory modules. Mini, low-profile design: small board format fits into compact enclosures and space-constrained projects while keeping essential MCU functionality accessible. Consistent hardware across units: shipping as a set of four ensures repeatable behavior and faster scaling from prototype to multi-node setups. Function and compatibility Function: WiFi-capable microcontroller boards for connecting sensors, actuators, or local controllers to networks and cloud services. Compatibility: supports MicroPython for immediate programming. Suitable for common WiFi IoT workflows and integration with networked services and data collectors. Material and construction: standard PCB-based module construction for electronics projects and prototyping. Performance notes 4 MB flash provides space for firmware, packages, and on-device files. 2 MB PSRAM increases available RAM for buffers, data handling, and more complex runtime tasks when using MicroPython or other firmware that can utilize external RAM. Practical use scenarios Home automation sensors and controllers: run MicroPython scripts to read sensors, control relays, and send state updates over WiFi to a home automation hub. Rapid prototyping and classroom labs: teach IoT concepts or validate designs quickly using Python code on real hardware without lengthy C/C++ toolchain setup. Edge data collection and buffering: collect sensor data locally, use PSRAM to buffer batches, and upload periodically to a server or cloud endpoint over WiFi. What you get Four (4) ESP32 S2 Mini V1.0.0 boards Based on ESP32S2FN4R2 chip (ESP32S2 series) 4 MB Flash 2 MB PSRAM MicroPython support This set is suited for developers, educators, and makers who need compact, WiFi-enabled boards with enough memory to run practical MicroPython applications and scale to small multi-node projects.