ESP32-S3

Everything tagged “ESP32-S3” across notes, resources, and Mochi logs.

NotesFirmwareSeptember 6, 2026

Which Wake Word Is Better? microWakeWord vs Google vs Alexa

A practical comparison of microWakeWord, Google Assistant, and Alexa by architecture, control, privacy, hardware fit, and ESP32-S3 integration.

Wake Word TinyML ESP32-S3 Google Assistant Alexa Voice Assistant Privacy

ESP32 development boards prepared for a beginner project beside a MacBook Pro on a real electronics workbench

NotesHardwareSeptember 2, 2026

ESP32 Beginner Guide – P1: What Is ESP32 and Choose ESP32

Learn the difference between ESP32 chips, modules, and development boards, then choose an ESP32-C3, ESP32-S3, or classic ESP32 board without buying hardware you do not need.

ESP32 Beginner Guide Development Boards ESP32-C3 ESP32-S3 IoT

An unbranded smart speaker with a physical microphone mute switch in a real living room

NotesFirmwareAugust 30, 2026

Wake-word detection: always-listening smart devices

A practical look at local wake-word detection on ESP32-S3 devices: audio framing, microWakeWord, threshold tuning, false activations, microphone mute, and privacy.

Wake Word TinyML ESP32-S3 Audio Voice Assistant Privacy

Camera-equipped ESP32-S3 prototype running person detection locally on a workbench

NotesFirmwareAugust 18, 2026

TinyML on ESP32: Running AI on the Device

How I run a small person-detection model on ESP32 with TensorFlow Lite Micro and ESP-NN, from memory limits to testing Espressif's example.

Firmware Hardware ESP32-S3 TinyML Machine Learning Edge AI

Macro photo of a MEMS microphone package showing its acoustic port and package marking

NotesHardwareAugust 10, 2026

What Is a MEMS Microphone? From a Silicon Diaphragm to ESP32 Audio

Learn how MEMS microphones work, how analog, PDM, and I2S outputs differ, and how to avoid PCB, power, and acoustic-port mistakes.

Hardware Firmware ESP32-S3 MEMS Microphone I2S Embedded Audio Mochi

Top-view PCB render of the ESP32-S3 battery power reference design used in the article

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NotesHardwareAugust 6, 2026

ESP32 Battery Power Design: From USB-C Charging to the 3.3V Rail

Review an ESP32-S3 battery power path from USB-C and TP4056 charging to protection, load sharing, 3.3V regulation, and load budget.

Hardware PCB Design ESP32-S3 USB-C Li-ion Power Design

Diagram of active, idle and sleep states used to reduce ESP32 display power consumption

NotesFirmwareAugust 6, 2026

Extending Battery Life in an ESP32 Robot with a Display

Analyze battery life for an ESP32 robot with a display: backlight, Wi-Fi, audio, peripherals, sleep modes, wake sources, and runtime.

Firmware Hardware Mochi ESP32-S3 Power Management Battery Life

Opened Mochi prototype showing the controller, display, wiring and 3D-printed enclosure used during early hardware experiments

MochiHardwareAugust 5, 2026

Complete Hardware Architecture for an ESP32-S3 Mochi Robot

A practical breakdown of ESP32-S3 Mochi Robot hardware: display, touch, I2S microphone, amplifier, speaker, battery, charging, and GPIO.

Mochi Hardware ESP32-S3 Firmware

ESP32-C3 board with a small OLED next to an ESP32-S3 board with a color display and speaker

NotesHardwareAugust 5, 2026

ESP32-C3 or ESP32-S3: Which Chip for a Robot with a Screen and Audio?

Comparing ESP32-C3 and ESP32-S3 on GPIO, RAM, PSRAM, USB, I2S, and LVGL headroom, with a concrete recommendation for a basic Mochi build and a Mochi AI build.

Hardware Product Design ESP32-C3 ESP32-S3 Mochi

Original open robot prototype showing its controller, speaker, battery and display hardware

NotesFirmwareAugust 5, 2026

Two-Way I2S Audio on ESP32-S3: I2S Microphone and I2S Speaker

A practical explanation of BCLK, WS, DIN, DOUT, full-duplex audio, sample rate, and buffers when building two-way I2S audio on ESP32-S3.

Firmware Hardware ESP32-S3 Audio I2S