Got something weird going on here. I made a project back in Jan19 using a wemos D1 on wifi for a PWM dimmer via a blynk slider and alexa. It has worked a treat faultless since day 1, until I made another project. 4 way wifi loudspeaker switch with 4 push buttons and blynk buttons to select each speakler pair, with a Wemos mini d1, on wifi, using the same network. I built this and tested it at work on a different network and it works perfectly, again faultless. So I took it home and connected it to my network with PWM dimmer - at that point both wemos boards just went crazy, connecting and disconnecting all the time, to the point were both were useless.
so I then removed the 4 way spkr switch(powered off etc) and the PWM dimmer now refuses to connect at all. I have brought the PWM dimmer to work and connected to network here and again it works fine!!! its just when I hang both of them on the same network. I did note the both had different IPs
anyone any ideas what is going on here ???