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Blog: More Printed Circuitry
It’s been quite a while since I've done an update on the metal printing front, so I thought I'd do an update of where we are. In my last blog post I set out about choosing a low melting point metal which would have some unusual properties which would help with printability - mainly choosing a temperature which would minimise damage to our traditionally printed plastic components on to which our metal would be deposited, and also using a non-eutectic to attempt to minimise the effects of surface tension. One of the main problems I previously had was solubility. Running molten metals were acting as solvents for my heated nozzle - resulting in the nozzle slowly dissolving during a print.
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SMT Soldering–It’s easier than you think! is our new Manga Comic that shows you step by step tips and techniques for learning to solder SMT parts . We’d love to get your feedback on the comic.
Disney researchers put gesture recognition in door knobs, chairs, fish tanks
Imagine a door that locks when you pinch the knob. Or a smartphone that can be silenced by a hand gesture. Or a chair that adjusts room lighting when you recline into it.
Hello. Welcome to Futurlec . The ELECTRONIC COMPONENTS Superstore. To find the component your looking for, either search by Part Number or visit the relative department. Need Help .
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Make your projects to go green this summer with our specialized USB/Solar Lithium Ion Polymer Battery charger! This charger is a very unique design, perfect for outdoor projects, or DIY iPod chargers. We've spent over a year testing and tinkering with this charger to come up with a plug and play solution to charging batteries with the sun and we're really pleased with what we ended up with. Easy to use! Pick up any of our many 3.7V/4.2V LiIon batteries , and a 6V solar panel .
USB / Solar Lithium Polymer (LiPoly) Charger tutorial
Partlist Wednesday: Lithium-polymer battery charger chips | Dangerous Prototypes
Lithium-polymer batteries are an excellent choice for portable projects. They are relatively cheap, hold a significant charge, and last for a long time. The drawback with these batteries is that they require rather complicated charging protocols. You have to watch out for overcharging, undercharging, overheating, etc… We are looking for a standard part to use in our projects, so we decided to do a roundup of open source lithium polymer chargers from SparkFun , Seeed Studio, and Adafruit . With the exception of Seeed, all the chargers are based on Microchip’s MCP738xx family of battery management ICs that come in SSOP and DFN packages.DE0-Nano power efficiency mod » The Lair of Mako
I recently bought a DE0-nano FPGA development board, which I’m currently using to mine Bitcoins. It’s kind of a neat board, but one downside to it is that it uses linear regulators to provide the 1.2V core supply to the FPGA, and they’re incredibly inefficient at this. Only about 25% of the power supplied to them actually goes into the 1.2V supply; the other 75% is wasted as heat in the regulators.
Dangerous Prototypes | A new open source hardware project every month
Power Stage Controllers drive transistors in applications like DC to DC converters, power factor correcting circuits, motor drivers, etc. Atmel describes the basics of their PSC equipped AVRs: This application note is an introduction to the use of the Power Stage Controllers (PSC) available in some AVR microcontrollers. The object of this document is to give a general overview of the PSC, show their various modes of operation and explain how to configure them. The code examples will make this clearer and can be used as guide for other applications. The examples are developed and tested on AT90PWM3.
IRFP260N image from warf.com. Pins are Gate, Drain, Source from left to right. If you need to switch high current and or high voltage loads with a micro controller you’ll need to use some type of transistor. I’m going to be covering how to use a MOSFET since it’s a better option for high power loads. This guide will be just a brief introduction that will discuss how to drive a MOSFET in a simple manner with the ultimate goal of making it act like an ideal switch.
A Beginner’s Guide to the MOSFET « ReiBot.org
What They Don’t Tell Engineers About E-Textiles « adafruit industries blog
Jessica shares her experiences from her first e-textiles project and offers some helpful tips: In my first E-Textiles experience, I definitely learned quite a bit about the “soft” side of soft circuits. Some of this may seem like common sense, but for someone who has never sewn much of anything, I most certainly learned some lessons. Choose your Fabric Wisely For this project, I just picked up the first suitable T-Shirt I found from Target. However, the fabric was incredibly thin and stretchy so when I took my carbon copy pattern off, the fabric scrunched together and I had a couple of shorts.
Arduino Dashboard App @ LVL1 . ArduinoDashboard is an application for viewing analog and digital pin sensor values from an arduino in real time. This can be used with any arduino sketch and now has compiled versions with no need to download processing.org ide. Sources included as well.
Arduino Dashboard App « adafruit industries blog
App Delegate Inc. Software
I’m using a pretty specific set of tools and I’ve come across an error that I couldn’t find a solution to, so I hacked my way out of it. I’m using django-nonrel to run Django on App Engine, while preserving some important features, like the admin ... Read more... I was trying to figure out what the coordinates of my home were, but I couldn’t find anything online to look it up. I was hoping for something like whattimeisit.com or whatismyip.com but for my location. Since it’s nowhere to be found, I decided to write ...Building a simple Fritzing component - Tales from the Evil Empire
This is me shaving a yak. Shaving the yak, if you don't know, is what you do when a seemingly simple task necessitates many recursive and unforeseen sub-tasks in order to be carried out. The story goes like this… Let's say that I want to paint a picture, but I'm in a shack in the middle of the desert and I don't have a canvas, brushes or paint. I do have a piece of strong cloth, a few pieces of wood, and the rocks around the shack can provide some pigments that I can mix with some oil. For the nails, I can extract some from the shack's structure itself.robotics