This time I designed and printed an attachment for the RC04 remote control to the well known Zoom H4n audio recorder.
With this design you can level all 4 audio channels with your left hand without letting go of the camera.
The LEDs on the remote will turn yellow and red to indicate when the level on one of the channels is about to spike.
Of cause you can also control the level of your monitor earphones/headphones, start and stop the recording and control playback instantly after the shot is made to check the recording.
(And possibly doing it again while you still can.)
* see this design on thingiverse
* the photo album of this project
* my notes in my personal wiki