CompuCanvas – wall art canvas enclosures for Raspberry Pi systems #RaspberryPi #Art @Raspberry_Pi

CompuCanvas is a system of networked Raspberry Pi computers with peripherals as art by Chris Daly. The peripheral devices incorporated into CompuCanvas systems have been selected (among other factors) because they can be controlled in a straightforward way from the command line.

CircuitPython devices from AdaFruit (running the 2.0.0 firmware), like the Trinket M0Gemma M0 and Circuit Playground Express offer 2 distinct modes of command line control. First, the device mounts as a USB drive at /media/pi/CIRCUITPY(additional devices at CIRCUITPY1CIRCUITPY2, etc.). This directory contains a Python file which is run every time the device resets. Editing and saving will force a reset and then run the new version.

The CircuitPython device also appears at /dev/ttyACM0 (or ACM1ACM2, etc). Run the command screen /dev/ttyACM0 and then press Ctrl-c and Enter once or twice and you should see a >>> Python REPL prompt.

The code is all on GitHub under a Eclipse Public License – v 1.0 license. See the repo for various CompuCanvas models.


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