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There's more than one ESP32, and here are the differences between all of them

This article details the various ESP32 series (Classic, S2, S3, C2, C3, C5, C6, H2, H4, and P4), outlining their key features, differences in CPU architecture, wireless capabilities, memory size, and intended applications. It explains the naming conventions and provides a comprehensive overview to help users choose the right ESP32 for their projects.

| **ESP32 Series** | **Key Features** | **Primary Use Cases** |
|---|---|---|
| **ESP32 (Classic)** | Dual-core, Wi-Fi, Bluetooth, BLE, DAC | Smart home, audio streaming, versatile projects |
| **ESP32-S2** | Single-core, Wi-Fi, USB-OTG, larger ADC | USB gadgets, low-cost IoT, cameras |
| **ESP32-S3** | Dual-core, Wi-Fi, BLE, AI extensions | Performance-focused IoT, AI/ML applications |
| **ESP32-C2** | Single-core RISC-V, Wi-Fi, BLE, low cost | High-volume, low-traffic devices (bulbs, sensors) |
| **ESP32-C3** | Single-core RISC-V, Wi-Fi, BLE, affordable | Battery-powered sensors, basic Arduino replacement |
| **ESP32-C5/C6** | RISC-V, Wi-Fi (C5: Dual-band), BLE, Thread/Zigbee | Advanced connectivity, mesh networks |
| **ESP32-H2/H4** | No Wi-Fi, BLE, Thread/Zigbee, low power | Ultra-low power applications, mesh networks |
| **ESP32-P4** | Ethernet, Dual-core RISC-V, H.264 encoder | Video processing, HMIs, industrial applications |

2025-07-10 Tags: esp32, esp32-s2, esp32-s3, esp32-c2, esp32-c3, esp32-c5, esp32-c6, esp32-h2, esp32-h4, esp32-p4, microcontroller, iot, wi-fi, bluetooth, risc-v, esp-idf, arduino, xda-developers by klotz

Welcome to My World of Hardware Innovation

I'm a dedicated hardware developer with a passion for creating innovative, open-source technology solutions. My focus is on modernizing retro computers, developing communication devices, and advancing keyboard technology. Join the journey to support and contribute to these innovative projects.

2025-03-07 Tags: hardware, retrocomputing, communications, keyboard, bobricious, armachat, arduino, iot, hacks, rf, bluetooth, wifi by klotz

ESP32-AIVoice-Z01 is an ESP32-S3 AI voice kit with dual microphones, wake word detection, noise reduction and echo cancellation

The ESP32-AIVoice-Z01 is an affordable ESP32-S3-powered AI voice kit designed for creating voice-controlled AI applications. It features Wi-Fi and Bluetooth connectivity, a dual digital microphone array, and supports wake word detection, noise reduction, and echo cancellation.

2024-12-31 Tags: esp32-aivoice-z01, esp32-s3, voice, dsp, arduino, bluetooth, iot, smart home, llm, hardware, hacks by klotz

Getting Started with Seeed Studio XIAO nRF52840 Series

Explore the powerful wireless capabilities of the Seeed Studio XIAO nRF52840 series, equipped with Nordic nRF52840 MCU, Bluetooth 5.0 connectivity, and options for embedded ML and advanced sensor integration.