Hi =) If you follow the steps from the video, everything should be fine. Does it run, if you comment out the "xQueueSend..." ? Anyway: You send the Message far more often, than you can handle it... You send every 1ms (more or less) and in model::tick() usually gets called with 60Hz ... I´m not used to XQueue, but i don´t see any external declaration of "poster" in model.cpp ...