tried out for wemos d1 mini clock: got it to connect home to get app over wifi but on restrt the serial monitor showed garbage only and the app didn't start. it made my serialmonitor crash so i had to end arduino with windows task manager.
on reset of the board still nothin, only a blue led on all the time and blinking off every 3-4 seconds during 50ms
so i will try to repeat procedure and test a simple blink sketch
on re-upload of IASloader:
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
... at the end of the day, tried lots of things, but didn't manage to get any further than the 1st callback home and then... stuck!
maybe it's my nightly build version of Arduino IDE or maybe I shouldn't have upgraded ESP8266 beta 2 ??