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Useful bonus feature

Started by Andrew Smallshaw August 31, 2022
I'm just doing some rough prototyping at the minute and to save
squinting I put a identifying label on the MCU showing part no and
orientation, from one of those thermal Dymo-style labelling machines.
What I hadn't anticipated is the bonus feature - these are thermal
labels so of course give a visual indication when the magic smoke
gets let out.

http://andrews.freeshell.org/news/20220821.cae/MVIMG_20220831_172913.jpg


-- 
Andrew Smallshaw
andrews@sdf.org
Andrew Smallshaw wrote:
> I'm just doing some rough prototyping at the minute and to save > squinting I put a identifying label on the MCU showing part no and > orientation, from one of those thermal Dymo-style labelling machines. > What I hadn't anticipated is the bonus feature - these are thermal > labels so of course give a visual indication when the magic smoke > gets let out. > > http://andrews.freeshell.org/news/20220821.cae/MVIMG_20220831_172913.jpg > >
Nice. One time long ago, I got snookered by a damaged prescaler in an 8-pin DIP. For recompense, I connected pins 1-4 to one side of a 120V mains plug, and pins 5-8 to the other. Made a very satisfactory bang, and excavated a crater out of the epoxy. Most soothing to my irritated soul, and _that_ chip was not going to waste any more of my time. (Pease talks about 'Widlarizing' in a similar vein.) Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com
On 8/31/2022 9:45 AM, Andrew Smallshaw wrote:
> I'm just doing some rough prototyping at the minute and to save > squinting I put a identifying label on the MCU showing part no and > orientation, from one of those thermal Dymo-style labelling machines. > What I hadn't anticipated is the bonus feature - these are thermal > labels so of course give a visual indication when the magic smoke > gets let out. > > http://andrews.freeshell.org/news/20220821.cae/MVIMG_20220831_172913.jpg
You need stronger adhesive and label material to PREVENT the smoke from escaping! :>
On Thu, 1 Sep 2022 23:26:21 -0700, Don Y <blockedofcourse@foo.invalid>
wrote:

>On 8/31/2022 9:45 AM, Andrew Smallshaw wrote: >> I'm just doing some rough prototyping at the minute and to save >> squinting I put a identifying label on the MCU showing part no and >> orientation, from one of those thermal Dymo-style labelling machines. >> What I hadn't anticipated is the bonus feature - these are thermal >> labels so of course give a visual indication when the magic smoke >> gets let out. >> >> http://andrews.freeshell.org/news/20220821.cae/MVIMG_20220831_172913.jpg > >You need stronger adhesive and label material to PREVENT the smoke from >escaping! :>
Many of you may know this but many years ago, I found that windowed Eproms can turn into a light if you plug them in wrong. Very wrong :) boB