Raspberry Pi Robot that can be controlled via a website with a live streaming webcam using Flask

Adapted from James Poole's and Pablo Rogina's projects with changes as follows:

• Python 3

• CamJam EduKit 3 instead of LD293 IC + proto-board. Controlled by gpiozero using CamJamKitRobot API

• Raspberry Pi Camera v1

• MJPG-streamer streaming application instead of motion. Since it's less resource intensive, video responsiveness and quality improved noticeably

• Updated index.html page from Pablo Rogina's

• Added automatic running and killing of MJPG-streamer using subprocess.Popen

• Add catching of Ctrl-C using python signals with help from "Stack Overflow How do I capture SIGINT in Python?". Stops MJPG-streamer using Popen.terminate

Developed using VS Code with Visual Studio Code Remote - SSH extension, Python extension and Code Spell Checker extension.

VS Code can remotely develop on the Pi, but it doesn't work on the Pi Zero. Setup by:

• Install VS Code on the remote PC from Visual Studio Code
• Install Visual Studio Code Remote - SSH extension
• To do finish

https://www.raspberrypi.org/documentation/usage/camera/raspicam/raspistill.md 'raspistill --help' todo finish

Based on Michel Deslierres' instructions and mjpg-streamer:

• sudo apt-get install cmake libjpeg8-dev
• sudo apt-get install gcc g++
• cd
• git clone git@github.com:jacksonliam/mjpg-streamer.git
• cd mjpg-streamer/mjpg-streamer-experimental/
• make
• sudo make install

Get help with the Raspberry Pi input plug in: ` Test with:

• mjpg_streamer -i "input_raspicam.so -hf -vf -fps 10" -o "output_http.so -w /usr/local/share/mjpg-streamer/www/" &
• http:\\<pi address>:8080/?action=stream
• kill %1

Get input & output option help:

• mjpg_streamer -i "input_raspicam.so --help"
• mjpg_streamer -0 "output_http.so --help"

Important raspicam input parameters:

• [-fps | --framerate]...: set video framerate, default 5 frame/sec

From https://github.com/LegoChicken/WebControlledRobot:

• cd
• git clone git@github.com:LegoChicken/WebControlledRobot.git
• cd WebControlledRobot
• chmod a+rx app.py # Make executable

• ./app.py

• Give a fixed size to the web stream.
• Improve LEGO strength
• Document camera above