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Pine64’s $2 “PADI IoT Stamp” module is based on Realtek’s new “RTL8710AF” Cortex-M3 WiFi SoC, a cheaper FreeRTOS-ready competitor to the ESP8266. Realtek’s RTL8710AF WiFi system-on-chip began showing up on tiny “B&T” labeled modules in July in China on AliExpress, as described in this Hackaday post. The Realtek SoC offers an even lower cost, and […]