I bought it a while ago and just played around with it. These modules are a good buy. Communicating via Serial IO on Arduino boards with Thing Speak. As mentioned in other reviews, being able to upload sketches straight to the esp 8266 is a real asset! Bought a FT232 TTL 3.3V USB cable at DIYMall to communicate with esp 8266. There is tons of information out there about 8266 and not all of it is accurate. Learning a bit about uploading the sketch directly to the esp 8266, but that's okay.
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