Latest threads in Electronics Designshow only best voted threads

Subject Author Posted Replies
 
Clamshell sealing (maybe a little off topic?)
Anyone have experience (good or bad) trying to seal plastic clamshell packaging on a budget, and have it look semi-professional? Translation: My little garage experiment didn't work as well as I had...
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6
 
Reflow soldering for dummies
In all my years as an electronics "hobbyist", I've never bothered to experiment with SMD and reflow soldering. I have a project now that is a very simple board and may even try some of those DIY...
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OT: Who wants to fry some chicken nuggets?
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ATTiny ADC and TWI
Looking at the ATTiny datasheet...why oh why do they put one of the ADC channels on the SCL pin? So it seems if you want to use all four ADC channels, it's not possible to connect the uC to an i2c...
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OT: Blocking websites
Firefox 46.0.1 I have an annoying website, specifically, an advertising site that is launched as a separate window when I access The Washington Examiner. It does nothing because NoScript stops it from...
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Again with a power supply input protection
A circuit will have 24V @ 1.5A (max) input from a wall wart. I'd like to design in reverse polarity and maybe over voltage input protection. (There are lots of threads about this.) I don't like the...
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steam molding polystyrene
Hi, I am looking for some info on hobbyist steam molding of styrafoam starting from the raw compressed styrene pellets, and using steam to expand them. I have the basic info but am wondering if anyone...
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small project --> suggestion
Hi. I need to build one interrupt driver module with raspberry, but to make this possible i have to make one small in between board which should do following: - i have one 12 VDC button that is...
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OT: Popular Mechanics "How To" booklets
Yes, i am asking about the booklets (NOT the magazines) from at least the 1950's (but before the 1970's as i remember). The Baby Bird (GooGull) "hits" are at least 90% for the magazine, and the...
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OT: Windows font "problem" - Taliban looking squiggle crap
Sorry for the OT, but someone here probably knows....? In Word, Excel, Outlook, etc..(Office 2013), when I click the font dropdown box, I see the name of the font on the left side of the box (as...
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PCB prototyping idea
I was in a craft shop today and one of these was being demonstrated I got the demonstrator to try it out on 0.05mm thick copper foil. It worked very well on parallel lines 0.3mm spacing and letters...
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24
 
Constant impedance filters
The other day I mentioned that it should be possible to design the perfect input matching circuit for passive L-C Butterworth ladder filters. In fact that's a limiting case and an easy one too. It's...
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1
 
Top ten (10) stupid pcb layout mistakes
OK I know tradition says I start at #10, but I'm going right for number one. (the oops I just made.) 1.) You've got the mirror image, wrong side out. (it would be less embarrassing, if I hadn't made...
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LiPo charger question
I have a little LiPo charger module, this one: It's based on the following IC: There doesn't seem to be any breakout on the dev board provided to give a "power good" signal to a microprocessor when...
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3
 
Switch poles and current ratings
I have this feeling that you guys are going to disappoint me on this, but I have to try: Given a double-pole switch with a current rating X per contact, what current could you safely design for if you...
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