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16:59
From $4 Pico to PS3 Super Slim Powerhouse: The PCB Journey Behind a qCFW Modchip Hack
This video documents the complete PS3 hardware modification workflow, from system verification and firmware preparation to successful custom hardware installation and recovery troubleshooting. It covers key steps including NOR flash backup, Hybrid Firmware setup, PS3HEN and Stagex installation, Pico UF2 flashing, precise signal wiring, and internal module placement near the disc-drive bay. Beyond the installation process, the video highlights real-world challenges such as TX/RX connection errors, limited internal space, resistance testing, and controller compatibility issues, providing practical lessons on diagnosing and recovering from common mistakes. By showcasing both the successful build and the problems encountered along the way, the video offers valuable insights for hardware enthusiasts working on console modification, embedded systems, and custom PCB-based upgrades.
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09:53
From Prototype to Walkie-Talkie: Building an ESP32 Custom PCB
This video showcases the complete development journey of an ESP32-based wireless walkie-talkie system, from initial concept validation to a polished custom PCB product. It demonstrates how ESP-NOW enables router-free real-time audio communication using the XIAO ESP32-S3 Sense, MAX98357A audio amplifier, external antenna, PTT control, and rechargeable battery system. The firmware section explores key engineering solutions, including automatic device pairing, low-latency audio packet transmission, ring buffer management, I2S DMA integration, software gain control, and communication status feedback. The video also highlights the transition from a prototype to a compact 3 × 7 cm custom PCB, focusing on RF layout, audio signal integrity, mechanical integration, and real-world range testing. It provides valuable insights into how thoughtful PCB design and professional manufacturing transform an experimental wireless project into a reliable handheld communication device.
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05:47
Turning an ESP32-S3 into a USB Host Mini Computer with a Custom PCB
This video demonstrates how the ESP32-S3's native USB Host capability can transform a compact development board into a feature-rich mini computing platform. It showcases support for USB HID devices, including responsive mouse control, real-time keyboard input, and simultaneous operation of multiple peripherals through a USB hub. The project also explores USB mass-storage support with a built-in file explorer, text file viewing, and additional applications such as a calculator and a simple game, all running on the same hardware. Along the way, the video highlights key engineering considerations, including the use of the ESP32-S3's native USB D+/D– pins, reliable 5 V peripheral power delivery, clean SPI routing for the display, and system stability under multi-device workloads. It provides valuable insights for embedded developers building advanced ESP32-S3 projects that bridge the gap between prototypes and production-ready hardware.
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08:37
ESP32 AI Pendant with a Custom PCB: From Prototype to Wearable
This video takes viewers through the complete development of an ESP32 AI pendant, from hardware assembly to firmware deployment and live AI demonstrations. Built around the XIAO ESP32S3 Sense, the project integrates an I2S audio amplifier, compact speaker, NeoPixel status ring, rechargeable LiPo battery, and a custom 3D-printed enclosure to create a portable voice-enabled AI device. The tutorial covers practical wiring, pin assignments, mechanical design considerations, and a streamlined browser-based firmware flashing process with Wi-Fi provisioning and Xiaozhi platform registration. Live demonstrations showcase voice interaction, image recognition, and real-time AI responses, while also illustrating the transition from a functional prototype to a custom PCB as the next step toward a more compact, reliable, and production-ready design.
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08:18
Desk Buddy V2: Building a Compact ESP32 Robot with a Custom PCB
This video showcases the complete V2 evolution of the Desk Buddy robot, highlighting the transition from a stationary desktop companion to an autonomous mobile assistant. It covers the redesigned mechanical structure, featuring a fully 3D-printed chassis, custom motor adapters, a dual N20 motor drivetrain, and an integrated LiPo-powered electronics system built around the XIAO ESP32S3, DRV8833 motor driver, VL53L0X ToF sensor, OLED display, and buzzer. Through real-world demonstrations, viewers see obstacle avoidance, edge detection, manual phone control, and expressive animations working together to bring the robot to life. The video also discusses current design limitations and planned drivetrain improvements, while showing how a compact custom PCB replaces complex point-to-point wiring to deliver cleaner integration, greater reliability, and stable sensing and motor control throughout the project.
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