Project Hub /Basic Analog & Power Electronics/Power Supplies & Voltage Regulators/ESPHome Automation - Transform ESP32 and ESP8266 into Smart Home Devices

Intermediate

ESP32

₹500 – ₹1,500

3 – 6 Hours

Partial Kit

ESPHome Automation - Transform ESP32 and ESP8266 into Smart Home Devices

A guide on using ESPHome to turn ESP32 and ESP8266 microcontrollers into smart home devices capable of sensor monitoring, actuator control, and Bluetooth proxy integration.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

ESP32 WiFi+Bluetooth CP2102 Development Board Rs. 520.00
DHT11 Temperature and Humidity Sensor Module for Arduino Raspberry Pi Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: MQ-135 / other MQ Gas Sensor
ATH10 sensor

Browse all components

How It Works

This project integrates microcontrollers like the ESP32 or ESP8266 into a unified smart home ecosystem using the ESPHome firmware platform. At the core of the circuit is a 5V regulated DC power supply that safely powers the development board and its connected peripherals. The system reads environmental and air quality data through sensors such as the DHT22, AHT10, and an optional MQ135 gas sensor, interfacing via digital or analog protocols. Two LEDs, protected by 220Ω current-limiting resistors, serve as visual status indicators controlled by general-purpose input/output (GPIO) pins on the microcontroller. Additionally, a 4.7kΩ resistor acts as a pull-up to ensure stable digital signal communication for components that require it. Once programmed using Python and the ESPHome package, the microcontroller wirelessly transmits telemetry data and receives automation commands over Wi-Fi, integrating seamlessly with central home automation hubs like Home Assistant without requiring low-level C++ programming.

Why Build This

Design and deploy custom IoT sensor nodes that integrate directly with open-source home automation platforms like Home Assistant.

Implement reliable environmental monitoring using temperature, humidity, and air quality sensors tied to microcontroller logic.

Gain practical engineering experience in wireless telemetry, sensor interfacing, and low-voltage power distribution.

Real-World Application

Smart home monitoring, automated climate control, security systems, and IoT sensor integration for home automation networks.

Skills You'll Learn

Microcontroller firmware configuration

sensor interfacing

digital input and output control

wireless IoT telemetry

power supply regulation

pull-up resistor implementation

Safety Precautions

Ensure proper 5V DC power supply regulation to prevent damage to development boards and sensors.

Technology Tags

ESPHOME

HOME ASSISTANT

IOT

PYTHON

WI-FI

BLUETOOTH LOW ENERGY

MQTT

SMART HOME

SENSORS

Frequently Asked Questions

Can I use an ESP8266 instead of an ESP32 for this project?

Yes, both ESP32 and ESP8266 development boards are fully supported by ESPHome and can handle sensor data collection and Wi-Fi communication, though peripheral pin counts may vary.

Why is a regulated 5V power supply necessary?

A regulated power supply ensures that the voltage delivered to the development board and sensitive sensors remains stable, preventing hardware damage from power spikes or voltage drops.

Do I need advanced programming skills to write the firmware?

No, ESPHome uses simple YAML configuration files rather than complex C++ coding, though familiarity with Python is helpful for the initial software installation.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

PRJ-01161