by micahmelnyk @ instructables.com:
In short: I developed a portable, battery powered device that sounds an alarm when your bag or purse is moved. Once armed, can only be turned off by your secret code.
The device is built off an Arduino compatible Trinket Pro, using an off-the-shelf project box with PCB.
Bag movement alarm for theft prevention – [Link]
by TinyCircuits @ instructables.com:
In this Instructable, we will be building a compass using the TinyShield Compass as well as the Circle Edge Led shield.
After getting your boards and battery, the Arduino IDE will be the first thing to download if you have not done so already. When the IDE has been loaded go to tools, board, and select Arduino Pro or Pro Mini (3.3V, 8MHz) w/ ATmega328.
TinyCompass – [Link]
My son got one of these Leap Frog toys a few years ago as a gift. He enjoys playing with it very much. I am not sure how much counting and learning he is doing but it makes funny noises and sings to him so its a lot of fun.
Recently the unthinkable happened. It died. Not the batteries but something else. I took the back off to look at what might be wrong (which was very easy for a toy). Unfortunately, other than the speaker, a switch, battery compartment, and a ribbon cable to the front, there wasn’t much to investigate. A couple of glop tops and nothing else. I fiddled a bit more with it but everything “external” seemed fine.
Make a Custom Membrane Keypad for Arduino – [Link]
by PeterHaban @ makechronicles.com:
I made a water level sensor a little while a go to measure the water level in my underground rainwater harvesting tank. Thanks to the Jubilee I found time to finally setup the first part of my Arduino/Xbee wireless sensor network and the first sensor node was also meant to read from this water level sensor. I was somewhat surprised when it only returned 0s so I went and had a closer look. How the slug got into the enclosure is still a mystery to me… but looking at the bright side (after the uncontrolled swearing) I now had a reason to build a much better water level sensor
Measuring a water tank level – [Link]
Arduino Nokia 5110 LCD display tutorial #2 – Load Graphics on the display
In this tutorial we are going to learn how to load our custom made graphics into a Nokia 5110 lcd display.
Arduino Nokia 5110 LCD display tutorial – [Link]
StickyBUGs are small, modular boards that enable you to quickly make your own Arduino shield, with no wiring or soldering required!
StickyBUGs are small, modular boards that enable you to very quickly make your own shield, with no wiring or soldering required! Take a handful of stickyBUGs, plug them into the main stickySHIELD and you are ready to go! Full sample and library code is provided. StickyBUGs can be placed in any order, making them the ultimate configurable solution for Arduino development. Now you can create the shield you want that will fit perfectly into your next project. Fast, configurable and low cost make stickyBUGs an ideal addition to any makers toolbox.
StickyBUG – Make Your Own Shields for Arduino – [Link]
by Husham Samir @ instructables.com:
A temperature data logger, is a portable measurement device that is able to recording temperature over a defined period of time automatically. The data can be retrieved and viewed after it has been recorded. In this device the temperature will record every one minutes in CSV file.
Temperature Data Logger – [Link]
praveen @ circuitstoday.com:
This article is about interfacing pressure sensor to arduino. The pressure sensor used here is SPD005G from Smartec . SPD (Smart Pressure Device) is a series of silicon based pressure sensors suitable for industrial as well as house hold applications. These sensors are generally available in plastic inline or dual inline packaging. SPD sensors are generally available in two operation modes namely gauge type and absolute type. In gauge type the pressure is measured with respect to the atmospheric pressure. There is a small vent on the package for getting contact with the atmosphere. In absolute type, the pressure is measured with respect to vacuum. A small vacuum chamber is incorporated into the package during fabrication. Typical applications of SPD005G are medical systems, BP monitoring, air conditioning systems, process control, hand held pressure sensors etc.
Interfacing pressure sensor to arduino – [Link]
by Jason Poel Smith @ makezine.com:
When working in extreme temperatures it is important to monitor your body temperature. In freezing weather, your fingers and toes get numb and you can develop frostbite without even noticing it. Likewise, if your core body temperature drops too low, you can start to start to suffer the effects of hypothermia before you are aware of it.
So I designed an automatic temperature sensor that will monitor the temperature of your fingers, your toes, and your torso, as well as the outside temperature. This can help you to stay safe when working in extreme cold.
Wearable Temperature Sensors For Working in Extreme Cold – [Link]
by siemenwauters @ instructables.com:
this is my first instructable. i show you updates on my cnc machine which will cost about 200 euro’s for still decent quality.
don’t hate if you don’t like this instructable, I’m just an 18 years old student from belguim sharing his ideas and creations with other people. because i think working together and sharing idea’s will make better projects.
this is what the machine looks like right now. ill post new photos every time i advance building
i know my video’s are not the best. i’m working hard to show you how everything works so it would be nice if you watched at least a peace of all of them to support my project.
Cheap Arduino CNC – [Link]