Content for Project

Getting started with LoRa + AT commands

“MIDI controller-filter-router, sound generator, available in kit or fully assembled. Designed by pangrus’ electro acoustic lab in Italy. I got my hands on REYAX Lora modules, and in this tutorial, we will configure these modules to communicate with each other …

High-performance, High-reliability Bipolar Stepper Motor Driver

“The project presented here is a bipolar stepper motor driver. It is based on BD63731EFV chip which is a low-consumption driver that is driven by a PWM signal. The power supply voltage of the project is 8 to 28V DC …

Li-Ion/Li-Po 18650 Battery to 5V Boost Converter

“The project presented here is capable of supplying 400mA of current from a 3.7V Li-Ion/Li-Po Battery input with a 5V output. The converter has an internal soft start and internal frequency compensation features. The project is built using …

Modularized Narrowband FM Receiver

“MC3362 and ADF4351 based, modularized, NFM receiver. This receiver is designed to listen to the 2m band amateur radio conversations. This project is about MC3362and ADF4351based modularized, 2-meter narrow band FM receiver. In this design, the receiver splits into three …

Ne555 Breathing Effect

“This is a simple ne555 timer IC based multi vibrator breathing effect . The LED blinks like we breathe we can control the breathing time using potentiometer on board. It works on 5 volts DC to 9 volts DC. The working …

Piezo Element Amplifier for Guitar and Violin

“The board presented here is a preamplifier for contact microphones that are used for amplifying the sound of musical instruments which do not contain electrical pickups, such as guitar and violins. Most contact microphones use a piezo element to convert …

Power-Saving PWM Solenoid Controller

“The project described here is a power-saving pulse-width modulator (PWM) controller for solenoids with an internal supply regulator. The board is based on the DRV110 IC which is a PWM current controller which is specifically designed for solenoid and relay …

The Black Swan Project

“The Black Swan Project is an ESP8266-based, secure, one-way communication channel. It might be superfluous in the current conditions. But let’s suppose that a black swan event occured, causing the nationwide blackout, complete failure of the mobile network …

Tiny Solar Cell

“This time I share with you an easy STEM project to show the kids how a solar cell works. This little device collects clean renewable energy in the form of sunlight and convert that light into electricity which can then …

Useless Machine Using 555 Timer

“This was by far the coolest machine I came across when deciding what to build for my final project, even though it really is the most useless machine in the world. I remember seeing this concept when I was a …