Do you remember the GT-521F52 fingerprint reader that we tested three weeks ago? We found a nice and fun application for it...
Two years ago, we showed you how to geolocalize a vehicle without using a paying service, with a Yocto-GPS and the Google Maps API. But this month, Google decided to make the use of the Google Maps API billable. This gives us the opportunity to have a look at alternatives based on free and collaborative development, which no longer have anything to envy Google.
This week, we are going to do some tinkering and build a hanging scale with a Yocto-Bridge and an Android smart phone. The aim is to weigh objects ranging from a few hundreds of grams to about twenty kilos, in order to weigh objects such a model air planes or bikes. Strangely, two widely popular hobbies at Yoctopuce :-)
We discovered somewhat by chance the ADH-Tech GT-521F52 fingerprint reader. As it is really affordable, less than fifty US dollars, we decided to buy one two, to see what we could do with it.
After four years of operation, we rejuvenate the Yocto-PWM-Tx this Spring, with hardware and software improvements. It naturally stays 100% compatible with the original version. Here is a small overview of what's new.
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