Electronics & Robotics Blog
Step-by-step tutorials, project builds, and technical breakdowns for Arduino, ESP32, sensors, and IoT systems by the Eleberric engineering team.
Create an Arduino Uno Voltmeter with OLED Graphic Output
Measure DC battery voltages safely up to 25V and plot beautiful waveform charts on a 0.91-inch display.
Control an LED or Appliance over Bluetooth using HC-05
Bridge the gap between your smartphone and electrical circuits. Implement serial Bluetooth data transfer.
Powering your Microcontroller Projects: A Deep Dive into LM2596 Buck Converters
Avoid burning out chips. Learn how to step down high battery voltages safely using the popular LM2596 regulator.
Creating an RFID Security Door Lock Access Control System
Unlock your doors digitally. Build an authentication node that accepts RFID cards or key fobs to trigger a lock mechanism.
Build a Simple Weather Station using Arduino and DHT11 Sensor
An entry-level guide to weather sensing. Display local temperature and humidity values on a bright screen.
Design a CNC Machine Axis with NEMA 17 Stepper Motors
Understand how high holding torque bipolar stepper motors are configured with drivers for precise linear control.
Building an IoT Air Quality Monitor with ESP32 and MQ-135
Measure harmful chemical gases, CO2, and smoke density in real-time, sending data straight to a Wi-Fi dashboard.
Smart Agriculture: Automated Soil Irrigation System with Arduino
Prevent under-watering or over-watering of plants. Assemble an automated pump activator using a soil moisture sensor and relay.
Building an ESP32 Smart Room Weather Logger with DHT11 and OLED
Monitor environmental data locally on a crisp OLED display and build a simple local web server with ESP32.
How to Build an Arduino Obstacle-Avoiding Robot
Build a smart autonomous wheeled robot that detects walls and turns using an ultrasonic sensor and micro servo motor.