I have this up and running with a wemos D1 R1 using a slightly modified sketch from here: https://github.com/bonjour81/ESP8266-MQTT-WEEWX. Only using the simulated temp and humidity values for now. Weewx is 3.7.1 on a Raspberry Pi2. Seems ok for the last few hours. https://www.andylittle.us/weewxuno. I have a dht11 and Davis rain/wind sensors to use with the wemos D1.
Only issue I had was the paho-mqtt needed to be installed with pip. Thanks for all this. Andy
