motionEyeOS is an awesome system for creating security cameras with single board computers. This can include systems to monitor pets or burglars. It has a number of nice features under the hood and one of those features is the ability to monitor GPIO pins and display information within the motionEyeOS web interface.
The “monitoring” feature allows you to run a bash script at a regular interval and overlay the text output on the web interface. This could be used to display the state of GPIO pins or other data such as CPU temperature, sensor readings etc.
I wanted to use this feature to display the status of my two garage doors. They have magnetic switches so I decided to configure motionEyeOS to display their status given the Raspberry Pi is already setup in the same location. The door switches connect a GPIO pin to 3.3V. When the door is opened, the connection is broken and the GPIO pin is pulled Low by the Pi’s internal pull-down resistors.
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8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.