It appears since IDE 1.6.6 the functions called in setup() for SimpleTimer need to be BEFORE setup(). Likewise any functions called within those functions also need to be before setup().

The IDE now uses something called arduino-builder to create function prototypes and therefore this is not specific to SimpleTimer. So on occassion when we have indicated Blynk users might not have installed SimpleTimer correctly it could be that the new arduino-builder is to blame.

1 Like

Yes, I see. We will update our examples.