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“Low-cost, homemade AT switches that, unlike Jelly Bean buttons, work by many forms rather than by contact or pressure This project presents two open-source, low-cost, homemade AT switches that don’t work by physical contact or pressure like Jelly Bean …
“In this post we will see how to measure the current frequency and power with a non-invasive current sensor SCT-13-50, a dual amplifier LM358. The most interesting thing about this project is that we can measure the current without …
“I’ve always wanted a transistor curve tracer. It’s the best way of understanding what a device does.Having built and used this one, I finally understand the difference between the various flavours of FET. It’s useful for …
“This is a very intresting project and utlize very less efforts lts make a very simple RPM meter (Round Per Seceond In my case).”
“If your project calls for light sensitivity, it’s hard to beat light dependent resistors (LDRs), also known as photoresistors. They’re available for a few cents each, and their resistance varies based on how much light they receive. In …
“Hello guys In this post I will show how to make a simple IR proximity sensor IR Proximity have one IR LED & one Photodiode LM358 IC is used in this project Basically IR LED will transmitte Infrared light when this …
“We have always used the continuity function of a multimeter to find out continuity in PCB,wires,circuit traces,fault detection,etc. When continuity is found the Buzzer inside the meter rings and when there is no continuity it does …
“A sleep quality meter that uses heartrate, breathing rate, and movement metrics to judge the quality of the user’s sleep. The What and the Why We created a system that monitors the quality of the sleep of its user …
“Ir sensor used to dectect any movement made in front of the two sensors which is IR led and photodiode. The range of Ir sensor can be adjusted using variable resistor(preset) . the range depends on Quality and specification of …
“This project is based on a 20X2 PICAXE Microcontroller. It uses a programmable timing circuit to allow the user to program repeated automatic plant watering cycles by controlling a small electric pump that feeds the plant water with 1/4 …