Overview I used a 1.69-inch IPS Display (ST7789) as a telemetry UI. On Raspberry Pi, font and text size were not a major issue. However, when using it in the ESP-IDF environment with the Adafruit-G...

Introduction During the development of my Raspberry Pi based autonomous robot platform, I found that most commercially available robot HATs consumed nearly all of the Raspberry Pi 40-pin GPIO heade...

Introduction: Shifting from ESP32 to Raspberry Pi Recently, I designed a micro-ROS PCB based on the ESP32. Around the same time, I also developed one for the Raspberry Pi. The ESP32-based project d...

If you are developing with custom or low-cost STM32F103 (e.g., STM32F103RCT6) boards, you might encounter a frustrating Windows 11 error: “Unknown USB Device (Device Descriptor Request Failed)” whe...

1. Motivation: The Sweet Prototyping Days with Breadboards, and the Inevitable Betrayal In the early stages of robot development, breadboards and jumper wires feel like an absolute blessing. They ...

Custom 18650 Battery Holder for My Autonomous Vehicle Project When working with 18650 batteries, I realized that length variations caused by protection circuits make off-the-shelf holders unreliab...

🛠️ First Project with Bambu Lab A1 mini: ESP32-S3 + Breadboard CAD Modeling 1. Why I Bought the A1 mini My motivation for purchasing the Bambu Lab A1 mini was to work on an autonomous driving car ...

SQL-based AI Inference Engine for Semiconductor Fabs SCP BigQuery joined the fray late as well. It involves binding data with analytics to receive results as a standard SQL query output. However, t...

Purpose I had an old Raspberry Pi 3B (RAM: 1GB) lying around, along with a kit called RaspBot. And like many households, I also had an outdated smartphone—SIM card removed, too old to sell, yet too...

MediaMTX WebRTC to ROS2 /image_raw publisher ROS2 package import rclpy from rclpy.node import Node from sensor_msgs.msg import Image from cv_bridge import CvBridge import cv2 import asyncio imp...