A cipher used by robots in my game "Anime Girls vs. The Cavemen". It's a way for robots to communicate in plain sight without organic lifeforms suspecting anything.
The robots are repositioning the dials on electronic devices (including themselves), and the dial positions are being used to encode information which can be read off by other robots. The same is true of the VU meters, indicator bars, etc. - the robots adjust a device's parameters until the meters are operating within a given range.
The actual mapping of symbols to glyphs is scrambled in every game. Additionally, the robots speak to each other using a language that resembles Assembly. It's up to you to scramble these when coming up with your own cipher...
Since the original art style for this game used chicken-head style knobs on the electronics, this gets the amusing name "Chicken Head Cipher".
Original size: 6pt (use multiples of this value for pixel perfection)