The Meshlium Xtreme multi-protocol router from Libelium supports five wireless standards (WiFi, ZigBee, GPRS, Bluetooth and GPS) as well as wired Ethernet, giving designers and users a choice of methods for connecting wireless sensor networks to the Internet. It also supports sensor data storage in its internal database or on external Internet servers. [via]
Multi-protocol wireless router links sensor networks to the Internet – [Link]
Of all the criticisms of electric vehicles, probably the most commonly-heard is that their batteries take too long to recharge — after all, limited range wouldn’t be such a big deal if the cars could be juiced up while out and about, in just a few minutes. Well, while no one is promising anything, new batteries developed at the University of Illinois, Urbana-Champaign do indeed look like they might be a step very much in the right direction. They are said to offer all the advantages of capacitors and batteries, in one unit. [via]
Complete battery recharging within minutes – [Link]
Engineering researchers at the University of Michigan have found a way to improve the performance of ferroelectric materials, which have the potential to make memory devices with more storage capacity than magnetic hard drives and faster write speed and longer lifetimes than flash memory. [via]
Fundamental discovery could lead to better memory chips – [Link]
robots updated his reflow over controller, source code is now available in github. Next up – install the electronics.
Reflow oven controller update – [Link]
When you make PCBs with the toner transfer method, you have to spend around 10 minutes per board sweating over a hot clothes iron while the toner melts to the PCB.
Ahmad Tabbouch though a laminator might be an easier solution, but the default temperature is too low. This tutorial shows how to hack a cheap laminator to run hot enough for toner transfer.
Easy toner transfer PCBs with hacked laminator – [Link]
For people who want to make geiger counters, check out these products at one of our fav. surplus shops – electronic goldmine.
Geiger Counter @ The Electronic Goldmine – [Link]
Oscilloscopes are surprisingly easy to use once you’re familiar with a few basic controls. They’re extremely useful for testing and can provide newcomers with a whole new way to view the world of electronics & electricity – plus they look impressively cool/awesome while in use!
The Oscilloscope – [Link]
Microchip has released a new application note explaining smart card communication using PIC MCUs. This is a good read for beginners, taking you from the basics of what a smart card is, to how data I/O occurs and how to build a PC-to-smart card interface using the PIC18F14K50.
App note: smart card communication using PIC MCUs – [Link]
Markus shared his Omnidirectional remote controlled robot:
Recently, I got interested in omni wheels, so I built this little robot. The robot has three pairs of omni wheels. I covered each roll of the omni wheels with liquid rubber (plastidip) to get better traction. I bought the cheapest servos I could find and modified them for continuous rotation. The robot is powered by four eneloop NiMH batteries and controlled by an Arduino nano 3.0.
Omnidirectional remote controlled robot – [Link]
Last year in one of my classes we were required to make an ‘artefact’ or something that reflects the interests of the class. Most people make posters and the past two quarters that’s what my class did too. Posters however are static, usually boring, and don’t reflect that fact that everyone in the class is an EE major. We decided posters are for noobs and decided to go off the wall a little and make an LED matrix display. Lucky one of my friends John Wathen already had this beautiful 16×24 Green SMD LED matrix that he built back in high school.
16×24 LED Matrix – [Link]