Home automation with Telegram BOT
by lucadentella.it: The project I’m going to describe today it’s a sort of proof of concept that will demonstrate the possibility to remote control sensors and actuators (for example a couple of relays) via Telegram. Telegram is an instant messaging application, similar to...
Continue ReadingSimple, Cheap Motor Controller
by TeamJaeger @ instructables.com: I've used this simple circuit several times to drive motors (like in my Stair Climbing robot) as well as solenoids. I originally picked it up from this instructable which is focused on controlling a solenoid. I wanted to isolate this circuit in its...
Continue ReadingArduino Thermometer With DS18B20
by KonstantinDimitrov @ instructables.com Hello, everyone !!! Today I'm going to show you how to make Arduino thermometer with DS18B20 digital temperature sensor, builded on breadboard and connected together with jumpers. Info about the sensor - DS18B20 is 1-Wire digital...
Continue ReadingIP Time Clock using NTP protocol
by msuzuki777 @ www.instructables.com So this Lazy Old Geek (LOG) has a couple of clocks in my bedroom. One of them loses time when the power is lost. The other is semi smart and automatically adjusts for Daylight Savings Time. Unfortunately, it does this using the old standard so I...
Continue ReadingUSB PIC Programmer
Stefano Purchiaroni rebuild a USB PIC Programmer that he found online. He writes: This page is dedicated to everybody needs to program a PIC (Microchip) device via USB port. Looking on the web for ready-to-use projects, I found a good one called Open Programmer, coming with several...
Continue ReadingLarge Current Relay Driver
This is a large current Relay module with single pole double throw switch which provides normally closed and normally open operations. The Relay is the most common used module in application such as home automation, industrial automation, and machine on/off. Sometimes you...
Continue ReadingPassive Infrared Detector Circuit
The infrared (IR) is invisible radiant energy, electromagnetic radiation that we cannot see with our eyes, but we can sometimes feel on our skin as heat. The infrared light falls just outside the visible spectrum, beyond the edge of what we can see as red. Most of the thermal...
Continue ReadingHacking a Blood Pressure Monitor
by Eduardo @ edusteinhorst.com: I’ve been meaning to hack my blood pressure monitor for a while, and I finally got around to doing it! So, the idea is to mod a regular electronic blood pressure monitor to make it wireless and connected to the Internet, much like iHealth BP5 or...
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