To help automotive trainers demonstrate the SENT (SAE J2716) protocol to their students I have created a webpage that generates Arduino-compatible code. This code, when loaded onto an Arduino Uno, emits the desired SENT message at regular intervals. This signal can then be decoded by an oscilloscope.
In addition, this code can be modified to add glitches, extra transitions, rogue messages, etc., and the students tasked to identify them using an oscilloscope. I hope this tool can be useful in teaching how to diagnose SENT sensors.
Test-drive the software here: http://arithmechanics.com/software/SENTDemo/