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PyroEDU Lesson On IR Proximity Sensors!

Posted May 21, 2015 by Chris

This week we are learning about proximity sensors in our new PyroEDU course: An Introduction To Sensors. In this lesson we’ll look at everything there is to know about IR Proximity Sensors. Here’s a quick intro of what this PyroEDU lesson is all about:

Knowing if something is in front of you is very useful for many different electronic applications. In this lesson we will use an infrared emitter and detector to sense if an object has crossed the sensor’s path.

This online course is also be available through:
uRedditP2PU

A Large Hexapod Made of Wood and PVC

Posted May 19, 2015 by Chris

"A few months ago I had the idea to build a large hexapod using PVC pipe as the legs, wood for the body, and windshield-wiper motors for the actuators. Unlike my last hexapod robot, PegLeg, the middle legs would use 2 motors for lifting, allowing both to be controlled separately. This left the potential for some interesting locomotion if everything came together correctly."

Building a new firmware for the Senseo coffee machine

Posted May 17, 2015 by Chris

"This part will describe all the hardware and various techniques used to figure out which signal goes where. Why do this? It’s an improvement on the original firmware and an exercise in consumer product design."

Aquarium Computer

Posted May 16, 2015 by Chris

"….But the process of building a PC is pretty boring, it’s just an exercise of picking out compatible parts for the right price. I decided to make it slightly more interesting by submerging the entire computer in a fish tank full of mineral oil."

USB Digital GPIO I/O extender

Posted May 15, 2015 by Chris

"Add general purpose input/output lines to your computer based projects. This circuit is a 12 pin digital GPIO interface using the Microchip PIC18f14k50 microcontroller which connects to an USB host port. The microcontroller is available in through-hole DIP20 and SMD packages, too."

PyroEDU Lesson On Temperature Sensors!

Posted May 14, 2015 by Chris

Today we are learning about temperature sensors in our new PyroEDU course: An Introduction To Sensors. In this lesson we’ll look at everything there is to know about Temperature Sensors and perform a fun experiment to give you a hands-on feel for how they work. Here’s a quick intro of what this PyroEDU lesson is all about:

The temperature sensor is a small component that packs a powerful punch. In this lesson, we’ll use a temperature sensor to output the current temperature inside the range of -40°C to +125°C.

This online course is also be available through:
uRedditP2PU

KEYSWEEPER – SIGINT @ SAMY.PL

Posted May 11, 2015 by Chris

"KeySweeper is a stealthy Arduino-based device, camouflaged as a functioning USB wall charger, that wirelessly and passively sniffs, decrypts, logs and reports back (over GSM) all keystrokes from any Microsoft wireless keyboard in the vicinity."

GameSphere DIY Arm7 Gaming Console

Posted May 10, 2015 by Chris

"This game console has an Atmel ARM7 microcontroller AT91R40008 that is capable of running at 100MHz if overclocked. It has the processing power to run simple games like Super Mario."

Spin – Spinning Light Drawing Images On The Retina

Posted May 9, 2015 by Chris

"Spin uses Persistence of Vision to create the illusion of a cylindrical digital display (computer screen), 12 feet tall and 12 feet in diameter. Vertical columns of multi-color LED (light emitting diode) clusters spin around a vertical axis at 90 revolutions per minute. At a radius of 6 feet, they move at 41 miles per hour."

Homemade Laser Driver with LM317

Posted May 8, 2015 by Chris

"This is a simple and cheap homemade laser driver. The LM317 is capable of up to 1.5A, which makes it possible to use it for >1000mW laser diodes. All parts together cost me around 2€. (~2.5$)"