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ESP32-S31
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Overview
ESP32-S31 features a dual-core RISC-V architecture and supports both wireless and wired connectivity. It includes 2.4 GHz Wi-Fi 6, IEEE 802.15.4 for Thread and Zigbee, and Bluetooth 5.4 for LE Audio, Direction Finding, and Bluetooth Mesh 1.1.
Summary from espressif.com.
Reports
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espressif.com
ESP32-S31
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Community reactions
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Hacker News · espressif.com
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Historical count: 5 · 5 saved in sample · Historical sample
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Based on 5 sampled comments from this thread. Analyzed 2026-06-03.
- Praise: The introduction of RISC-V cores simplifies embedded systems development, enhancing accessibility for developers by eliminating the need for cumbersome proprietary toolchains.
- Praise: The ESP32-S31's dual-core architecture and wireless capabilities position it as a strong option for low-volume designs, offering a balance of performance and ease of implementation.
- Praise: Having both WiFi and wired ethernet on the same chip is a significant advantage, catering to diverse connectivity needs in embedded applications.
- Concern: The lack of hardware floating point support may limit the performance of certain applications, particularly those requiring complex calculations.
- Concern: Concerns about the ESP32-S31's capability to handle demanding AI workloads arise, as its dual-core 320MHz architecture may struggle with more intensive models like vision tasks.