Build wifi gadgets with ESP8266

speaker: Baoshi event: GeekCampSG 2015

** why connecting things to the internet? remote convenience

• monitoring
• diagnose/support data driver
• get weather data ** ESP8266 developed by Espressif System
• company in Shanghai
• headed by a Singaporean 32bit Tensilica Xtensa Core External flash
• bad for IP protection 80kb DRAM, 40kb available user software 35kb IRAM to load the instructions Part number is ESP8266EX ** development board Adafruit Huzzah NodeMCUv1 ** dawn of ESP8266 SDK released by Espressif allow users to create their own firmware ** power consumption sleep: 40 micro amp wifi idle: baseline 64mA, 424mA every 100ms for wifi hand shake wifi active: average 67.6mA does not last on battery if always connected, need to put module in sleep mode ** other options particle photon lightblue bean
• ble openwrt router
• not low power ** programming Arduino IDE Lua for NodeMCU ESP8266 SDK and toolchain