Photography Power Supply
I am a serious amateur photographer and am in the process of building an external power supply for my camera. This is a well documented project and uses a Traxxas 8.4v model car battery for the power source. I am also interested in adding an external power supply to my auxiliary flash unit. The flash, an Olympus FL36, uses two MiNH AA batteries. Since the Traxxas battery will have way more power than I really need for the camera, I'd like to use this to power the flash as well.
I found adafruit while looking for a DC stepdown voltage converter and the TSR12433 looks like it will do the job perfectly. My concerns are:
1. The MiNH batteries are 1.25v each and the flash manual lists MiNH as well as alkaline batteries. The alkaline batteries are 1.5v each. Will the 3.3v output of the TSR12433 be too high or is the extra 0.3v typically acceptable to these kind of devices?
2. I'm not an electrical engineer, am I on target here or way off base in some way that I don't understand because I'm a little ignorant of these things?