Once the droplets are placed on the aqueous phase, the dish is moved under a camera (position 4 of the aqueous wheel) for the droplet behaviour to be recorded and saved as a video file.
We use a simple webcam for recording but we need to ensure that the lighting conditions are very similar between each experiment. Especially, it is important to remove all light reflection on the water surface that hinders the performance of image analysis of the droplets.
- All STL files available in the hardware/3d_parts/camera_holder folder
- Onshape 3D model
The code managing the camera working station is here: software/working_station/record_video.py. This simply triggers the recording of a video of given duration into a specified file.
It utilizes tools from our chemobot_tools library, and is interfaced and configured in the software/webcam folder.