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Description:

pytriggertrap 0.1.0

Control a TriggerTrap device without the smartphone app.
A TriggerTrap is (or
was)
a device that you can plug into your camera in order to control it with
your smartphone.
However, in some cases you don’t really want to actually control it with
your smartphone although it’s nice to have a simple way to control it.
The sad thing is that isn’t any documentation or API to do that. The
good thing is that the protocol is actually pretty simple and the aim of
this project is to provide a way for Python developers to control
TriggerTrap devices.

Installation
Through pip:
pip install pytriggertrap

Non-python requirements
This tool uses the ffmpeg binary, please make sure that it is
installed and present in your PATH.

Usage
There is two ways to use this too:

Using the pytt CLI tool, that allows to do most things from the
shell
Using the TTController class, for developers

If you want to use the class, then read the code, it is documented via
docstrings.

The pytt tool
Different actions allow you to access the different features of the
controller class.

timelapse_file
This will generate a “timelapse file”. Here’s the idea: a TriggerTrap is
controlled via an audio signal. So if a device can generate the
appropriate audio, then it will be able to control the camera. In the
case of time lapses, it involves letting the thing running for a long
time, maybe while you’re not even there. In this case, it is really
annoying to have to leave your phone there.
The solution is the following: you just need to dig out an old MP3
player (anything will do the job) and then to generate a MP3 file that
will be a pre-generated audio signal. You can generate it of the right
size if you want a precise duration or just generate a few iterations
and then put the file on “loop” in your player.
So:

Generate the timelapse MP3 file
Put the file in your player
Plug the TriggerTrap on your player
Play the music
Wait for your timelapse to be complete

Suppose that I want to watch something for 6 hours (21600 seconds) in
order to produce a 30 seconds timelapse video. Here’s the command:
pytt timelapse_file -i 21600 -o 30 -f timelapse.mp3
See the command’s built-in help for the options.

trigger
This will simply send a trigger to the camera. Just make sure that the
TriggerTrap is connected to your computer’s audio.
Example
pytt trigger
See the command’s built-in help for more options.