I finally got around to testing the camera trigger circuit using two 7555's. The circuit works great. After connecting the PIR trigger, the camera wakes up and triggers perfectly. I them checked the current draw and it was fluctuating continouously from 28mA to around 10mA. I then disconnected the trigger wire, and the 555 trigger and output voltages stabilized with the trigger pin held high, and output near zero volts. The circuit, including the PIR drawing 7mA at rest. Apparently the PIR trigger wire is causing instability on the trigger pin of the 555! Does the pull-up need to be smaller?, or perhaps a resistor between the PIR trigger and pin 2... (The timers will trigger if I touch pin 2 with a bare wire in my hand, so I am near the threshold...) The trigger wire is pulling current, while not dropping the trigger voltage enough to cause instability. I hope this makes sense... Thanks!!