Energy efficient and voice controllable LED

Alexa Voice Service

NodeMCU ESP8266 Breakout Board

Arduino IoT Cloud

BH1750 Light Sensor

Dual H-Bridge motor drivers L298

Linear Regulator (7805)

This project is made for my bachelor's thesis, and it was inspired by my internship, where I recognise the importance of being energy-efficient, which is often overlooked in favour of renewable energy solutions. And also my bed is far from the light switch so before bedtime, I always have to turn off the light and walk in the dark to my bed, which is annoying. It was when I have the idea to make a light that is energy efficient, and voice commendable at the same time <figure><img src=https://projects.arduinocontent.cc/73638ca4-ab40-45b2-84a7-cd07a853a1f1.png /><figcaption>The principle of the project </figcaption></figure><ul ><li >Firstly, sensor data on the environment’s illuminance is collected by the (1) microcontroller. Then, the sensor’s reading will be sent to Arduino IoT cloud - a cloud-based platform for IoT applications - by an Internet connection via WiFi</li></ul><ul ><li >The (2) microcontroller’s role is to control the brightness of the LED generating the PWM signal. The microcontroller can be controlled in 3 scenarios:</li></ul><ul ><li >By the control panel on the dashboard of Aurdino IoT cloud on either the website or the application on the smartphone</li></ul><ul ><li >By voice command through Alexa</li></ul><ul ><li >By activating the “Automatic” mode, in which: The (2) microcontroller will read the illuminance reading from the (1) one, and consider the required illuminance to control the LED accordingly</li></ul>Find out more about integrating Alex with Arduino IoT Cloud at: <a href="https://create.arduino.cc/projecthub/303628/arduino-iot-cloud-amazon-alexa-integration-4e6078">https://create.arduino.cc/projecthub/303628/arduino-iot-cloud-amazon-alexa-integration-4e6078</a>The code comprises 2 sketches: one for the sensor-receiving ESP8266, one for the LED controller ESP 8266The detailed diagram of the circuit: <figure><img src=https://projects.arduinocontent.cc/05e28fd0-07fa-4324-87e9-c5ddabbe4f7a.png /><figcaption> </figcaption></figure>And the decision tree for the principle behind the code: <figure><img src=https://projects.arduinocontent.cc/59b013b4-bfff-42aa-b6e1-ab7ab65a40be.png /><figcaption> </figcaption></figure>

Schematic Image  

Code for the microcontroller that receive sensor data 

Altium files of the project 

The code for the microcontroller that control the LED 

Energy efficient and voice controllable LED

Making an automatically adjustable, voice controllable and remote control by smartphone with ESP8266 and Arduino IoT Cloud