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Espressif Systems ESP32-S2FN4R2 — RF System on a Chip - SoC SMD Wi-Fi IC, ESP32-S2FN4R2, single-core MCU, 4 MB flash die and 2 MB PSRAM die inside, QFN 56-pin, 7*7 mm vs Espressif Systems ESP32-C61HF4 — RF System on a Chip - SoC ESP32-C61 is a low-power MCU-based system on a chip (SoC). ESP32-C61 integrates 2.4 GHz Wi-Fi 6 and Bluetooth Low Energy (Bluetooth LE). ESP32-C61 consists of a 32-bit RISC-V single-core microprocessor, a Wi-Fi baseband, a Bluetooth LE baseband, RF — Robotitem