I’ve completed my investigation installing also a local Blynk server for sniffing traffic and in my opinion there is a bug in the App (I tried IOS only) with slider widget
When a Slider is set to send data on release only, it doesn’t send any change to Blynk server moving to the edges (0 or 255) after the Hardware has called a Blynk.virtualWrite.
I tried a lot of workarounds without success:
- change from horizontal to vertical sliders
- change borders from 0…10 to -10…0
- disabling data mapping
Changing “send data on release only” to OFF it works but it requires some very bad code to process just the last value.
Now I cannot do more because no way to debug the App internals.