Hey everyone! It’s me, ladyada! I recently got my Amateur Radio License (‘HAM ticket’) and I wanted to start out with a radio that’s both inexpensive, easy to use, and fun to hack! After seeing some videos from CCC about the MD-380, I thought this radio is the one for me to start with.
Not only does this radio do FM analog on the 400MHz band, but it can also do DMR – digitalencoded radio! This gives you the ability to use an Internet-backed voice network with no static and huge world-wide repeater reach.
I’m just getting started on my HAM-venture but I thought I’d take some notes on the hacking and programming I’ve done! Some of it, like updating the Firmware and flashing User DB, is optional – but it’s also the most fun!
Here’s a simple and simply great read by Andrew Dupree for Mindtribe on ‘The Landscape of Electronic Housings,’ with potting, injection molding, and macromelt explained, including a really interesting feature comparison matrix.
Housings are the unsung heroes of consumer electronics. The electronics might pass all tests, and the embedded software might be bug free, but to put your product in the wild it will need a sturdy mechanical housing to keep everything together.
Like any other facet of product development, housings are surprisingly complex beasts. There are several different ways you can go about developing a secure home for your circuits, bits, and bytes. Which you employ will depend on your anticipated manufacturing volume, cost constraints, aesthetic needs, time constraints, and more. And though the following list isn’t exhaustive, some of the most useful technologies for developing mechanical housings are potting, injection molding (clamshell and insert), and Macromelt.
Place this thin layer of plastic in the sun and it begins to oscillate irregularly all by itself. Today researchers from Eindhoven University of Technology (TU/e) and the Humboldt University in Berlin present this material – the first that moves spontaneously under the influence of daylight – in the journal Nature Communications. According to the researchers, this pliable plastic is suitable as a self-cleaning surface, for example for solar cells...
OLYMPIA, Wash. (AP) — The U.S. Supreme Court on Tuesday declined to hear an appeal from Washington state pharmacists who said they have religious objections to dispensing Plan B or other emergency contraceptives.
If you grew up in the NES era, you probably lusted over the Power Glove, especially after watching The Wizard, now considered a bit of a cult classic. About halfway through the flick, a character named Lucas Barton shows off the accessory and says, "I love the Power Glove. It's so bad." Unfortunately the Power Glove never lived up to the hype,
Yahya Tawil wrote up some excellent pointers – with handy animated GIFs to visualize them – for using Eagle CAD. As you might suspect, as with most software, it’s a balance of using the mouse and more-quickly initiating tasks, menus, and shortcuts via your keyboard. Some of them you’ve probably had to hunt down on your own, and others you might not have even thought about yet, but they could speed up your production (or just make your interaction with Eagle CAD more rewarding by hitting a few key combinations instead of having to sift through multiple menus and sub-menus).
Most hobbyists and many professionals use Eagle CAD as a daily tool in designing schematics and laying out PCB. I’m going to share with you the most important tips and tricks for using Eagle CAD, which make my work much easier and faster.