Tag: MQTT

Building a battery powered WiFi IoT Sensor with ESP8266, MS-5611 (GY-63), nodemcu and MQTT

Introduction The ESP8266 is a 32 bit micro controller with an integrated WiFi chipset and TCP/IP stack. The flash is connected via SPI. Firmware upgrades can be done via the serial port after booting with GPIO0 pulled to ground (I’m

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