Amazon DRS Promise: Never Miss Coffee Break Again!

Amazon Dash Replenishment Service Automatic coffee ordering robot using Arduino MKR1000. Never miss another coffee break again! Story Coffee fuels our nation, according to this Gallup article Just under two-thirds of U.S. adults drink at least one cup a day Coffee drinkers average 2.7 cups per day, unchanged from 1999 A quarter say they're addicted, but only 10% want to cut back We all love our coffee. We w ...

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Troubleshooting a 32kHz Crystal Oscillator

For Project Whack a Mole I need a 32.768kHz crystal oscillator. I found this circuits on the Interwebs and gave it a try: It wouldn’t go. I messed about changing component values for while, then decided to actually try to understand the circuit. Now for an oscillator to work, we need an amplifier with a gain of greater than 1, and a phase shift of 360 degrees to get positive feedback. The circuit above is a ...

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Good Sleep – Your Sleep Assistant

Get the best night's sleep by using Alexa and Arduino to monitor the conditions in your bedroom, make suggestions and help you sleep better. Story Introduction and Idea Everyone deserves a good night’s sleep. Without good sleep, it’s difficult to function at full speed and face the day ahead. A restless night can happen for many reasons, and it’s hard to diagnose. That’s where Good Sleep comes in. With Good ...

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Review: ScanaQuad – a super-small logic analyzer

If you are mainly involved in designing or repairing digital devices, a logic analyzer is more useful than an oscilloscope for tracing signal through circuits. However, does this mean you should rush out and buy a logic analyzer? The instruments from the leading manufacturers are too expensive for home use or startup businesses, and the low-cost alternatives don’t do what you want or have half-baked softwar ...

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Better LEDs with just a trick of the light

Light propagating in a layer of scattering nanoparticles, shows the principles of diffusion - like tea particles in hot water. The deeper light is penetrating into the layer, the lower the energy density. Scientists of University of Twente’s Complex Photonics Group, however, manage to turn this falling diffusion curve into a rising one, by manipulating the incident light. More light energy inside an opaque ...

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Walabot Object Detection

A PC application that talks to the Walabot PRO, Arduino and NeoPixels! Story Welcome to my Walabot project I will split this project in different parts 1. Get to know the Walabot and a setup. This includes data readout and send it to an Arduino. 2. Gather the data that is needed for the calculations and create an image with this data 3. Convert the data to an object Getting started with the Walabot I've mad ...

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Automatic Cool Blue Lights For Your Room

Build a Automatic Cool Blue Lighting System using Arduino, that will turn on when you walk into the room and turn off when you walk out. Story Let us do something fun during this weekend shall we? Something less costly and easy for everyone to do. This time, why don't we play with lights? Let us build a cool blue Automatic Lights just like neon, that will turn on when you walk into the room and turn off whe ...

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Graphene Patterned at Room Temp

LAKE WALES Fla.—Graphene is easily grown with chemical vapor deposition (CVD) on copper foil, but a simple way of etching out the necessary circuit patterns and transferring them to a non-metallic substrate has eluded engineers. Now researchers at the University of Illinois (Urbana-Champaign) claim to have a one-step room temperature process for quickly patterning and transferring graphene circuits to flexi ...

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DIY electronic RFID Door Lock with Battery Backup

About Burglars Recently the Spiegel published an article about burglars in Germany: Burglars prefer the dark months. In december the insurances report 3 times more housebreakings than in july. The police reports that it is very difficult to find the delinquents. Mostly there are no witnesses and no traces. Only in 2,6% of the housebreakings the culprit can be condemned. Burglars do not only break into house ...

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Smiling Snowball

A web-controlled smiling snowball based on the Arduino MKR1000 controlled via WiFi using MQTT, Shitr.io and Node-red. Story Introduction This project started with the intention to be a proof of concept for some techniques that I wanted to learn. Since it is winter now and it started to snow, I came up with the idea to build it as a smiling snowball. The main goal is to make the Smiling Snowball controllable ...

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Reef Controller

A Reef / Saltwater Aquarium controller based on an Arduino Mrk1000 and controlled remotely by an Universal Windows Platform app. Story On a reef tank the temperature and lighting schedule are critical functions that can't be left to a person to do manually. A completely automatic system isn't good when you need to do maintenance on the tank or if something happens when you're away. So an automatic controlle ...

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The Aurora Boxealis – A Color Sensing and Mirroring Project

Introduction Besides looking damned good on an otherwise bland and ordinary desk, this project is about more than just being attention grabbing eye candy.  It’s about demonstrating a small portion of our single board computer capabilities by hooking up a color sensor, RGB light strip, and enclosing it in a nice looking wooden enclosure.  We’re dubbing it the “aurora boxealis”, and it’s made to stand out fro ...

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