New ESP Boards

Are these new? Reader Christian brought these to my attention this evening – price is ok – and if size is at a premium…. Small footprint,  USB-to-TTL is on the underside. This is quite interesting when space is an issue. Supplier also has a DHT11 shield: http://www.aliexpress.com/item/D1-mini-Mini-NodeMcu-4M-bytes-Lua-WIFI-Internet-of-Things-development-board-based-ESP8266/32529101036.html Next is a…

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Smoke Alarm by Email

Reader Christian brought this to my attention.. (http://www.simpleiothings.com/10-diy-wifi-smoke-alarm-notifier-roost-nest-alternative-full-tutorial/) The guy uses a NodeMCU, a USB wall power supply and audio sensor (microphone) to catch the audible alarm and start a WiFi alert via IFTTT. The smoke alarm unit stays unaltered and you never have to think about running out of…

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