Technical Blog
Notes on embedded systems, IoT, PCB and firmware
Linear Encoder 2D Game Controller: Turning Physical Motion into Gameplay
How I used a linear encoder as a physical input device for controlling a 2D game, and what it teaches about human-machine interfaces.
Building an ESP32 Gree AC IR Remote with Custom PCB and Web UI
A practical build note on making a Wi-Fi based Gree AC remote using ESP32, IR LEDs, custom PCB design, and a browser control panel.
Making an A7670C 4G Module Smart Phone with Touchscreen SMS UI
How I approached a 4G module based smart phone prototype with a touch display, SMS keyboard, dialer-style menu and modem control.
SIM800 GPRS MQTT Test: Bringing Cellular IoT Online Without Wi-Fi
A field-style note on SIM800 modem startup, GPRS attach, HTTP testing, MQTT connection attempts and display-based debugging.
ESP32 TFT 2D Game Display: Running a Game on Microcontroller Hardware
A build story about making a small 2D game render directly on an ESP32-driven TFT display with game loop, obstacles and game-over state.
Smart Energy Meter Load Controller with LCD, Keypad and Relay Output
A practical energy monitoring and load-control prototype that displays live readings and switches connected loads.
AUST Mars Rover Electronics: PCB Design and Power Distribution Lessons
Notes from the rover electronics side: circuit simulation, PCB planning, power distribution, connectors and multidisciplinary integration.
Pure Sinewave Inverter with Solar Charging for Backup Power
A power electronics build note on SPWM inverter design, solar charging, battery backup and rural energy reliability.
Automatic Power Factor Corrector: Real-Time Capacitor Bank Switching
How an embedded power factor correction device monitors AC load behavior and switches capacitors to improve efficiency.
Flood Relief and Rescue Robot: A Robotics Idea for Bangladesh
A human-centered robotics build for flood response, payload delivery, remote movement and disaster relief support.
IoT Home Security with ESP Wi-Fi, Motion Sensor and Remote Alerts
A practical home security project using ESP Wi-Fi, motion and door sensors, local alarm output and remote event notifications.