Raspberry Pi_Zero Camera trilogy

                                                         Raspberry Pi_Zero Camera trilogy

Raspberry Pi camera trilogy: This project combines a Raspberry Pi Zero and a CSI camera

to deliver three distinct camera modes with the operating mode selected using tactile push-

buttons. To keep the setup compact and headless, a small I2C OLED display replaces the

traditional HDMI monitor, acting as the interface to navigate settings and track live

operations.

1. A Timelapse Camera — set the duration, set the interval, press a button, and let it GO.

2. A Bluetooth Remote Camera — press a button on an inexpensive Bluetooth transmitter,

and the Pi Zero takes a photograph remotely.

3. A Scheduled Timelapse Camera — set the date, time, duration, and interval in a simple

schd.txt file and it can continue working according to the schedule for days, weeks, or even

months. If a power interruption causes it to restart, it checks the schedule and automatically

prepares itself for the next upcoming event.

So far, we have developed a combined module for applications (1) and (2), with the

schematics shown below. Application (3) is built around the same hardware module but

performs a different function.We have used three tactile, momentary push-button switches. Their functions differ

depending on whether the Raspberry Pi Zero is starting up or has completed the boot-up

process. The button operations are explained below.

Let us see the use of timelapse scheduler camera on pi zero. 

1. Observing natural phenomena like Shifting position of Sun: Have you noticed that the Sun does not rise at exactly the same position on the horizon throughout the year? In the Northern Hemisphere, its rising position shifts southward towards the December winter solstice and then gradually moves northward towards the June summer solstice.

Using the Pi Zero Time-Lapse Scheduler Camera, we can capture the sunrise for four hours every morning over several consecutive days. Comparing the images will help us observe this gradual movement. Repeating the experiment over several weeks or months will make the seasonal changes even more evident.

2. Observing Earth’s Rotation: How can a simple Pi Zero camera help us observe the rotation of the Earth? Mount the camera securely outdoors, pointing it towards a clear patch of the night sky, preferably including moons and or some stars. Capture images at regular intervals over several hours using the Time-Lapse Scheduler. Keep the camera fixed in the same position and direction throughout the observation.

As the Earth rotates from west to east, the stars appear to move across the sky from east to west. Comparing the captured images or combining them into a time-lapse video will reveal this apparent movement. For an even more striking demonstration, point the camera towards the northern sky, where stars appear to trace circular paths around the North Celestial Pole.

3. Monitoring Structural Changes Over Time: Timelapse_scheduler on Pi Zero camera can help monitor a leaning building, a sagging bridge or an unstable rock. Mount the camera securely at a fixed location and use the Time-Lapse Scheduler to capture photographs during three periods daily—morning, midday and afternoon—for several weeks or months. 

Comparing the images, manually or through software, may reveal gradual changes in alignment, position or visible cracks that warrant further investigation.
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Project Summary: The Raspberry Pi Zero Camera Trilogy is a low-cost, versatile camera platform built around the Raspberry Pi Zero 2 W, a CSI camera, an OLED display and three push-buttons. It offers three operating modes: manual time-lapse photography, Bluetooth remote-triggered photography, and scheduled time-lapse photography.

While the first two modes provide convenient ways to capture images, the scheduler is the project’s most distinctive feature.....

Applications and Future Scope:  Developing the Camera Trilogy has extended the role of the Raspberry Pi Zero 2 W beyond ordinary photography. Its scheduled operation opens up possibilities for observing natural phenomena, tracking plant growth, recording construction progress, studying cloud movement and documenting other gradual changes that are difficult to observe directly......

Sample video: https://www.youtube.com/watch?v=BkssRTqg-uE01

Somnath Bera