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Reputable Monster Moto suppliers & testing before use
Here are member endorsed suppliers and testing procedures to ensure your board is working when it is delivered. If you find alternate quality suppliers please help others by making your own reputable supplier recommendation.
There are normally timelines to be met to be eligible for refunds on faulty boards, so it pays to test them on arrival.
You can follow @SeatTime's advise and use an oscilloscope: http://www.xsimulator.net/community...otors-mms-and-arduinos.6948/page-8#post-81280
Or do a bench test with a multimeter before installing, as @SilentChill demonstrates here: https://www.xsimulator.net/communit...of-motion-sim-project.8448/page-6#post-111669
@tombo recommends this Monster Moto supplier, though notes that: the MMs are from China so has a long delivering time; Ordered many times, parts always be working: US 11.14: http://www.ebay.de/itm/Dual-VNH2SP3...584?pt=LH_DefaultDomain_0&hash=item485bfc7368
And this Ebay supplier, EUR 9,78: http://www.ebay.de/itm/291515853127?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT
Normal DX.com is another supplier recommended by @tombo: Shipping time (2-4 weeks); 23,62€; If the listening ended just go to the sellers shop, there will be a new auction: http://www.dx.com/de/p/monster-moto-shield-for-arduino-red-161274#.Va5x10Y0MqI
Another recommended Ebay supplier, this time by @hape, US $9,74: http://www.ebay.de/itm/310780916584
@Vef445 had a good result with 3 MMs ordered from this Ebay supplier, 9,53 USD: http://www.ebay.fr/itm/381256283620
@Pit bought at the end of 2015 from this seller 2 pieces, both are working, the quality of these samples is pretty much better than many units he got from other suppliers earlier http://www.ebay.com/itm/191674295987