Working with graphics in CircuitPython is a joy. CircuitPython has support for a plethora of screen types and a rich set of functions to perform graphics operations.
When working on a device that has a screen, it can be useful to programmatically take a snapshot what’s on the screen and save it into a file for examination or use later. This could be for various reasons including capturing graphics for use at another time and/or system, debugging the code that is putting pixels on the screen, or use in documentation. It can also be useful to be able to save the contents of a bitmap, for example in PyPaint.
This guide introduces a CircuitPython library which is compatible with CircuitPython 5.0 and later. The library allows the programmer to take the pixels in a bitmap or on a screen and save them into standard 24 bits per pixel BMP files. Files may be on the CircuitPython USB flash filesystem (if it’s set to writable mode) or onto an SD card.
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
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.