Turning cheap GSM development board into opensource BLE mobile phone
I saw that Ai Thinker that developed ESP8266 has some new modules, and after a bit of search found cheap GSM development board http://www.ebay.com/itm/152255901336?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT I have found all documentations and source code for 8051 chip. I have te... »