I built this simple lamp for my old mom. It is intended to be placed under the bed and to light up when getting up, a simple way to get light immediately reducing the risks of falling while moving in the dark.Nothing fancy, I just found a led lamp and a motion detector both in(…)
Everyone gets tired of using those wires hanging out of your multimeter to detect any voltage is a wire or a circuitBut there is a way to it a Non-Contact Voltage Detector. Yeah that sounds neat and simple. So, Let’s make it with using only 4 Components. What !!! Only 4 Componrnts but How ??If(…)
If you have a dust collector you know what a pain it is if the shavings backup into the filter. Some of the commercial units available are expensive and they rely on an optical sensor. Who would put anything optical inside a drum full of statically charged dust and shavings and expect it to work(…)
Using Eagle, the PCB I designed is a “Varmint Detector”. Varmint: noun, North American informal – a troublesome wild animal. In my case, crows and chipmunks attacking our garden. They really aren’t much of a problem, this is just my excuse to build a solar powered device.Scenario: animal moves …By: JonMackey Continue Reading » Instructables:(…)
In this project, We’ll try to get some information from the human body by using simple sensors and Arduino. You can use this information to create a lie detector machine. At the end of this article, you :Know Polygraph and basics of measuring and recording physiological indicators.Will be familiar w…By: Electropeak Continue Reading » Instructables:(…)
I have many old CD and DVD writer of PC and laptop.I tear down many of them. These employs highly accurate stepper motor(DVD and lens movement) and simple DC motor (For opening and closing tray). I use it for 3D printer and mini CNC machine. But only part it left is circuit board and DVD(…)
3D printer smoke detectorI built this smoke detector with the hope of feeling more at ease when leaving my printer overnight or going out while its still running. If you had to be around monitoring your printer for every print, you would never leave the house!The smoke detector is built with an atme…By: AnthonyH3 Continue(…)
I’m fortunate enough to have an old Coke machine that I use for, er, "refreshments". It holds about 30ish cans when full. The trouble is, how many cans are in it at any given time? When do I need to make a run to replenish the machine?A solution (apart from opening the machine all the(…)
Completed by Kristen Stevens, Karem Gonzalez, and Leslye SaavedraAn electrostatic polarity detector can be used to detect if an object is negatively or positively charged. We followed the steps from the following youtube video: https://www.youtube.com/watch?v=WptwVzK7cK0&t=255s. Materials: FDS8958A …By: kri2190522 Continue Reading » Instructables: exploring – featured
Hi. Today I am going to show you How To make AC detector.Speaking about AC or alternating currents, it is far more dangerous than DC. It can easily kill you if the voltage is 220v or 110v city power.Before touching any live wire always make sure no high voltage is available there.So, how you can(…)