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🔗 Master-Slave I2C Communication Between Two Arduinos – Full Guide + Code

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Want to connect two Arduino boards to communicate seamlessly? Using I2C (Inter-Integrated Circuit) communication, you can send and receive data between a master Arduino and a slave Arduino with just two wires . Whether you're building a sensor network , multi-Arduino system , or an IoT prototype , I2C makes it super easy! 🧰 Components Required ✅ 2x Arduino Uno or Nano ✅ Jumper wires (Male to Male) ✅ Common Ground Connection ✅ (Optional) OLED Display or other I2C devices ✅ Android phone to test/control via app 🛒 Buy all these at Plysmotix.in – Affordable electronics for makers, students, and developers! 📲 Bonus: Download the Plysmotix Android App Make your I2C projects smarter with our Android app: ✅ Send/receive data via Bluetooth ✅ Monitor serial output remotely ✅ Access DIY tutorials ✅ Shop components anytime 🎯 Download the Plysmotix Android App 🔌 I2C Wiring Between Two Arduinos Pin on Master Pin on Slave A4 (SDA) A4 (SDA) A5 (SC...
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⚠️ DIY Gas Leak Detector Using MQ Gas Sensor and Arduino – Perfect for Home Safety Projects

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Gas leaks can be deadly, and early detection is crucial. In this blog, we’ll build a gas leak detection system using Arduino and an MQ series gas sensor . Whether you want to monitor LPG, methane, smoke, or carbon monoxide , this project gives you a powerful yet simple solution for smart home automation and IoT . 🧰 Components Required ✅ Arduino Uno or Nano ✅ MQ-2 / MQ-3 / MQ-4 / MQ-5 / MQ-7 / MQ-135 gas sensor ✅ Jumper wires ✅ Breadboard ✅ (Optional) Buzzer or LED for alerts ✅ Android phone with Plysmotix app for monitoring 🛒 Buy high-quality sensors and kits from Plysmotix.in — Trusted by makers across India! 📲 Download the Plysmotix Android App Level up your electronics experience: ✅ Access live tutorials & projects ✅ Bluetooth control & sensor reading ✅ Shop components on-the-go ✅ Get alerts and project ideas weekly 🎯 Download Now and unlock smarter DIY electronics! 🔌 Circuit Diagram (MQ Gas Sensor to Arduino) MQ Sensor Pin Arduino VC...
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🔒 DIY Arduino Fingerprint Sensor Access Control System Using Adafruit Sensor

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Want to build a biometric security system like the ones you see in sci-fi movies? With this project, you’ll learn how to create a Fingerprint Access Control System using Arduino and the Adafruit Fingerprint Sensor . 🔐 From home automation to locker systems , this project offers real-world value and is beginner-friendly! 🧰 Components Required ✅ Arduino Uno or Mega ✅ Adafruit Fingerprint Sensor (R307 or GT-521F52) ✅ Jumper wires ✅ Breadboard ✅ (Optional) Relay module for door lock or buzzer for alerts ✅ Android phone for monitoring/control via app 🛒 Buy all components at Plysmotix.in – trusted by thousands of makers across India! 📲 New: Control Your Fingerprint Projects via Android App Want wireless monitoring or project kits on your phone? 🎯 Download the Plysmotix Android App to: View wiring diagrams and codes Control your Arduino fingerprint system remotely Track your orders and shop 24/7 Get exclusive DIY kits and projects 🔌 Circ...
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