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Graphene Patterned at Room Temp 1

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

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DIY electronic RFID Door Lock with Battery Backup

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

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The Aurora Boxealis – A Color Sensing and Mirroring Project

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

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Fluke Philips PM66xx Frequency Counter OCXO Upgrade

Fluke/Philips PM66xx Frequency Counter OCXO Upgrade

In this post I will document an OCXO upgrade board I designed for the Fluke/Philips PM66xx line of frequency counters. Introduction A few months ago I purchased a Philips PM6674 frequency counter on eBay. It’s an older 9 digit counter with two channels that has a maximum input frequency of 550MHz. The design feels dated

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Bling Bra Wearable Sexy and Connected IoT Bra

Bling Bra: Wearable, Sexy and Connected IoT Bra

Sexy bra using Arduino MKR1000, Neopixels, and controlled from your smartphone. Story Motivation Many makers sacrifice their social life to play with devices and spend many hours and days making fun things. However, the non-maker do not understand that a robot is something beautiful even if there is a breadboard, components and noise in this

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Rechargeable batteries with nanowires last forever

Rechargeable batteries with nanowires last forever

University of California, Irvine researchers have invented nanowire-based battery material that can be recharged hundreds of thousands of times, moving us closer to a battery that would never require replacement. The breakthrough work could lead to commercial batteries with greatly lengthened lifespans for computers, smartphones, appliances, cars and spacecraft. Scientists have long sought to use

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