Towards the end of our coding class at school today, one of the children asked me how they would choose a random synth in their code. I couldn’t give them the answer off of the top of my head so I came home and have placed two different solutions below:
# Choosing a Random Synth in Sonic Pi
# Solution 1
use_synth [:beep, :blade, :cnoise, :dpulse].choose
# Solution 2
use_synth choose([:beep, :blade, :cnoise, :dpulse])
To see or change what timezone your Debian system is configured for:
More detailed information is available in the Debian Wiki
More specifically, I used this in a setup of HypriotOS, a minimal Debian-based operating systems that is optimised to run Docker on ARM devices. In this instance it was an old Raspberry Pi Model B running NodeRed in a Docker Container.
I needed to get the time in the Docker Container to match the time on the host. Achieved, as below, where /etc/localtime on the host is mapped to /etc/localtime in the container when it is created.
I have used NodeRed to subscribe to messages from an MQTT service I have running that publishes various messages from various nodes around our house. The NodeRed code listens for some of these messages and uses the AWS Polly Service to convert them to speech and read them out to us.
There’s a sample of the speech, below, as well as screen shots of the NodeRed flows.