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February 26, 2015
Tutorial - Gas Pump Skimmers
about 2 years ago
The base board is very likely a surplus item intended originally for another purpose. While I don't see this particular one on eBay, there are literally millions of surplus assemblies of this general nature available online. That likely explains the high quality of the base board and the use of EoL components. I'll be one can find a "kit" for a few bucks online to make your own skimmer along with instructions.
On another note, there are literally dozens of bluetooth monitoring apps for IoS available from the chip manufacturers, and some parts vendors. I have 16 different ones on my personal phone (yes, I know this is a danger sign)... Not saying you should be porting the app to IoS, but perhaps one of these existing apps can work to detect the skimmers with little or no modification.
about 3 years ago
So... Why, if the AD8937 will work to 8 MHz (per the data sheet), does the board limit to 3 MHz? Haven't yet received mine, but I'm guessing C4 is all than limits the bandwidth... or am I reading the data sheet wrong?
News - The Race to the Bottom: L…
about 5 years ago
This is right on target. The weak link is the electrolytics, and heat kills them.
Also, your wag on component costs is off by a factor of 10, more or less. Nothing in there costs more than a few pennies at the quantities they are buying. The manufacturing cost is referred to as "Direct Material/Direct Labor" or DMDL; if they can't get DMDL below 20% of the sale price, they won't bother selling. That includes shipping to the retail store's distribution center. Factor in utility subsidies for a buck or two. "How do we do it??? VOLUME!!"
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