Here's the final drawings. Everything is there.
DC Current for 3.3V Pin 50 mA
I hadn't noticed the power mod before the last post.We are testing the setup with a 9V battery power source to the Arduino.And all power sources connected as shown.The transistor has not been hot at all. Could a bad transistor cause the problem we are seeing?
I would separate that part and test it to make sure the arduino is actually seeing the HED trigger.