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Community Projects

A prototype is an early sample, model, or release of a product built to test a concept or process or to act as a thing to be replicated or learned from.

LoRa Chatmetry

Bandhavgarh tiger reserve forest, MP – 1150 square kilometres spread across Umaria district. The jungle has a core area of 820 square kilometres where no human activity is allowed. The...
visual and audible monitor for electronic interfaces

Visual and Audible Monitor for Electronic Interfaces

Most of the modern PCs and embedded systems have digital interfaces as RS232, printer ports, LIN, etc. for exchanging of commands and data with intelligent peripherals. Figure 1 is showing typical...

Want to Build Your Own Self-Balancing Robot?

Do a Google search on "build your own robot" and you'll find a treasure trove of kits, articles, and videos. Have you ever wanted to give this a try? An engineer...
low cost high impedance buffers circuit

Low Cost High Impedance Buffers for Oscilloscopes and Voltmeters

Most of the low cost digital oscilloscopes and voltmeters have input resistance around 1 MOhm and input capacitance around 100pF. But in many case we are in need of input resistance...

Intelligent Speech Recognition System for Assisted Living

Speech Recognition is an important user interface enhancement for a variety of devices, ranging from smartphones, voice-controlled entertainment devices in the living room to hands-free conversing in automobiles. The idea behind...
Wireless Remote Control Functionality Using YODA & Arduino receiver side

Wireless Remote Control Functionality Using YODA And Arduino

This Wireless Remote Control project is based on Yoda with an adapter and Arduino Nano. Electrical appliances (like fan and lights) can be controlled wirelessly using an RF remote. This Project describes...

Solar MPPT using IC LM5118

The need for renewable energy sources is on the rise because of the acute energy crisis in the world today. The main limitation for the saturation and reach of solar PV...
GPS Receiver

ESP32 (Non-Standard) GPS Receiver

Introduction GNSS – GG-1802 ($5 a piece) Sometimes things do not fall in place and we curse ourselves for taking the wrong turn or making the wrong choices. But in P B Shelly's...
Automatic Curtain System

Automatic Curtain Operation Using LDR

We have witnessed a rapid inclination towards automation lately. Considering some of the factors such as time consumption, affordability, feasibility and convenience, automation has enhanced our standards of living in numerous...
midget vibration detector circuit

Midget Vibration Detector

This article describes a low-cost sensitive midget vibration detector that can interface directly with any microcontroller. The entire circuit operates off a single 5 volt supply. Probably there is no need...

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