Operate 4 Channel Relay using nodeMCU (ESP12-E)

In this article, we are going to learn, how to install the driver of NODEMCU (ESP12-E) and see you and upload in Arduino IDE. Code: Code :  https://github.com/Drjslab/4-Ch-Relay-ESP8266-sketch Image 0: Pin Diagram of NodeMCU ref#[1] Connect your nodeMCU to your PC using micro USB. There are chances that, your computer may not get the proper Driver. the

Digital flute

This is the project Idea, where one device having look of fluite, which can control pitch of voice as per presure of air given by user. as well digital key mounted on device can make varitation on sound. All this functinality control by IoT, (like rasberry pi) and push button. This Idea is Opensource, Kindly