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Circuitkar Blog

Tutorials, project guides and component deep-dives.

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electronicsiot

NodeMCU Explained

Practical insights, comparisons, mistakes to avoid and buying advice for makers and engineers.

13 May 2026
1 min read5
final-year-projectiot

Best Final Year IoT Project Ideas

Ten final year IoT project ideas that actually impress panels — with components, innovation angles, and what makes each one stand out.

PreviousPage 7 of 11Next
13 May 2026
2 min read4
electronicsiot

Choosing Sensors for Automation Projects

Practical insights, comparisons, mistakes to avoid and buying advice for makers and engineers.

12 May 2026
1 min read4
soil-moisturesmart-irrigation

Soil Moisture Sensors Guide

Capacitive vs resistive soil moisture sensors — which lasts longer, how to calibrate, and how to build a smart irrigation trigger.

12 May 2026
2 min read4
electronicsiot

IoT Project Budget Planning Guide

Practical insights, comparisons, mistakes to avoid and buying advice for makers and engineers.

11 May 2026
1 min read2
ultrasonichc-sr04

Ultrasonic Sensors Explained

How the HC-SR04 works, its specs, wiring to ESP32 and Arduino, waterproof variants, and limitations you need to know.

11 May 2026
1 min read6
electronicsiot

Electronics Components Every Beginner Should Own

Practical insights, comparisons, mistakes to avoid and buying advice for makers and engineers.

10 May 2026
1 min read2
rfidrc522

RFID Modules Explained

RC522, PN532, RDM6300 — how RFID modules work, what cards they use, how to wire them, and which module fits your project.

10 May 2026
2 min read4
esp32troubleshooting

Common ESP32 Problems and Fixes

The most frustrating ESP32 issues — upload failures, WiFi drops, ADC errors, brownout resets — diagnosed and fixed with specific solutions.

9 May 2026
2 min read4