IoT Notes.
Browsing articles and guides categorized under IoT. Use the search bar to refine matches.
Gesture-Controlled 6-DOF Arm with MediaPipe and ESP32
How my 6-DOF arm follows a hand: a webcam, MediaPipe's 21 landmarks, a WebSocket link and an ESP32 driving six servos through a PCA9685, plus the jitter and power problems to plan for.
River-Level Monitoring with ESP32 and GSM: A Monsoon Design Sketch
How I'd build a low-cost river-level node for Assam's monsoon: an ultrasonic sensor on a bridge, an ESP32, a GSM link and SMS alerts on rate of rise. A local supplement to official flood warnings, not a replacement.
10 Final-Year IoT Project Ideas for Engineering Students in Assam
Ten ESP32 project ideas for a final-year engineering project in Assam, each with a real problem behind it, the core parts, and the one detail that lifts it above a copied tutorial.
IoT for Assam Tea Gardens: Soil, Weather and Pest Alerts on a Budget
What a small sensor network can realistically do for an Assam tea garden: soil moisture and pH checks, weather logging over GSM, and alerts that tell you when to scout for pests, not magic pest detection.
ESP32 Deep Sleep Modes and Wake Sources: A Power Optimization Guide
Reduce ESP32 current consumption from 240mA active to under 15μA using deep sleep, RTC memory, and timer or GPIO wake sources.
ESP32 FreeRTOS Task Scheduling & Prioritization
Learn how to write deterministic firmware on ESP32 using FreeRTOS tasks, task notifications, and semaphore queues.
Best Practices for MQTT Telemetry on Low-Power Microcontrollers
Optimize your MQTT payload sizes, Quality of Service (QoS) levels, keep-alive frames, and deep sleep cycles for efficient IoT devices.
How Much Does IoT Hardware Prototyping and Development Cost?
A budget breakdown of IoT product development stages: components sourcing, custom PCB design, firmware engineering, and cloud infrastructure.