If you want to work with this microscope, please bring a laptop so you can capture and see images.
Samples are placed directly on image sensors protective glass.
No focus required. Any organisms in water sample cast shadows on imaging sensor.
Based on Raspberry Pi Zero W and lensless camera.
Raspberry Pi can be programmed in Python with OpenCV for image processing.
Has WiFi and Bluetooth.
The lensless microscope is composed of a Raspberry Pi Version 1 camera module and Raspberry Pi Zero computer board. Plug in an HD monitor, USB keyboard and mouse. Power up the unit and in about one minute you will see the desktop.
Recording Video and Taking Still Images
In the terminal window type sudo raspivid -t 0 and you will see the microscope output.
Press “control C” to quit viewing the microscope.
Here are some more useful commands
sudo raspivid -t 10000 -o foo.h264 to record a 10 sec movie and save it as foo.h264
omxplayer foo.h264 to playback the movie foo.h264
raspistill -o foo.jpg to take a still image and save it as foo.jpg after a 5 sec preview period
The videos and stills will be saved in the directory /home/pi/
You can list them using the desktop file system or using Linux commands in the terminal
More on raspivd: https://www.raspberrypi.org/documentation/usage/camera/raspicam/raspivid.md
More on raspistill: https://www.raspberrypi.org/documentation/usage/camera/raspicam/raspistill.md