Switched to ESP8266 Wizard 1.2.9 build system with Visual Studio 2017 Community Edition
Switched to ESP8266 Non-OS SDK 2.0.0
Added configuration via JSON interface
Added possibility to publish to a custom Thingspeak server
Added possibility to publish data to a MQTT broker
The binaries are for the 512KB flash version only. Download the WifiWaterLevelGauge.eagle.flash.0x00000.bin to address 0x00000 and WifiWaterLevelGauge.eagle.irom0text.bin.0x10000.bin to the address 0x10000. The EAGLE files for the schematics and the board layout are also attached.