greeeg 460 Posted March 11, 2014 Share Posted March 11, 2014 where did you find them? China! specifically Taobao, and I used a forwarding agent to get them to AUS. I'd been looking for dual coloured small LED 8x8's for awhile now. Lots of little Neodymium magnets. I am experimenting with soldering the little bastards for making electrical snap connectors. Neodymium's are...Nickel? plated right. My experience is that they can be soldered, but with repeated "snaps" the plating peels off, and that's the end of your magnet. Quote Link to post Share on other sites
t0mpr1c3 91 Posted March 11, 2014 Share Posted March 11, 2014 There goes my $0.99 Quote Link to post Share on other sites
enl 227 Posted March 11, 2014 Share Posted March 11, 2014 If the edges are rounded, and the solder comes to, but not over, the top edge, there is mechanical grip and they will hold. Soldering into a well helps with this. I have had the sam eexperience soldering to a surface.... the plating cracks off eventually Quote Link to post Share on other sites
jpnorair 340 Posted March 11, 2014 Share Posted March 11, 2014 We just received a box full of pre-release HayTags. Here's one. greeeg 1 Quote Link to post Share on other sites
t0mpr1c3 91 Posted March 12, 2014 Share Posted March 12, 2014 Another possibility with these magnets (4mm diameter) is to swage a little bit of copper brake fluid tube and solder them inside. That should give a pretty solid connection. Quote Link to post Share on other sites
pabigot 355 Posted March 12, 2014 Share Posted March 12, 2014 Fedex just dropped off two EK-TM4C1294XLs. Maybe I'll have a chance to even try them out sometime in the next week. Quote Link to post Share on other sites
Fred 453 Posted March 12, 2014 Share Posted March 12, 2014 Hmmm. Despite ordering mine on 18th Feb, it's still stuck in "Processing". I suppose that serves me right for sneakily ordering one when it wasn't supposed to be in the store yet! Quote Link to post Share on other sites
dubnet 238 Posted March 12, 2014 Share Posted March 12, 2014 @pabigot That was quick! They quoted 8 weeks on my order so based on your post I logged in and checked. Scheduled to ship in about a week. Quote Link to post Share on other sites
pabigot 355 Posted March 12, 2014 Share Posted March 12, 2014 It may be mine was expedited because I'd bought over $500 worth of other stuff from them in the last four weeks. Between TI, Adafruit, Pololu, and Sparkfun my research budget for this year has been completely blown; on the other hand, I've got the pieces necessary for a half dozen complex projects. Quote Link to post Share on other sites
Rei Vilo 695 Posted March 15, 2014 Share Posted March 15, 2014 Today, I've received the FRAM MCUs for Dummies book. A 52-page nice introduction to FRAM technology, with explanations on how it works bluehash 1 Quote Link to post Share on other sites
timotet 44 Posted March 16, 2014 Share Posted March 16, 2014 I got these a couple days ago! bluehash 1 Quote Link to post Share on other sites
bluehash 1,581 Posted March 16, 2014 Share Posted March 16, 2014 Looks sweet! Is it like the NeoPixel? Quote Link to post Share on other sites
timotet 44 Posted March 16, 2014 Share Posted March 16, 2014 Yes kind of , I built a 3d printer and wanted to mount a light up under the print head. I looked into using one of the neo pixel rings but they didnt quite fit the dimensons needed. I also wanted to be able to control it more than just on and off so I put a msp430 on there. I will post about it once I have them built up and working. bluehash 1 Quote Link to post Share on other sites
Lgbeno 189 Posted March 16, 2014 Share Posted March 16, 2014 We just received a box full of pre-release HayTags. Here's one. {style_image_url}/attachicon.gif photo 1.JPG Looks great! Quote Link to post Share on other sites
yosh 121 Posted March 18, 2014 Share Posted March 18, 2014 Received my Adapter/Proto-PCBs today from iTead. Hope they are thin enough (0.8mm), that I can cut them with a paper guillotine. Edit:Cutting with a paper guillotine and scissors worked like a charm bluehash, Rickta59 and greeeg 3 Quote Link to post Share on other sites
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