A simple flappy bird clone developed during the mini game jam in the "Künstlerhaus" in Dortmund on 2017-06-10 by Miriam, Marco, and Reinhard. German blogpost about the event.
The game is played on a oscilloscope with a potentiometer controlling the bird and a button to reset the game. It was developed in about 8 hours. The analogue signal is generated by a R2R network driven by some of the (digital) GPIO pins of a RaspberryPi 3.
A second version uses the audio jack of the raspberry pi to produce an analog signal.
The connection is established via an audio to cinch adapter cable.
DA-Wandler
MCP 4921 (SPI): wenige kHz http://shelvin.de/da-wandler-mcp4921-am-arduino/
SPIDEV-Dokumentation:
- http://tightdev.net/SpiDev_Doc.pdf
- http://www.netzmafia.de/skripten/hardware/RasPi/RasPi_SPI.html
- https://raspilab.blog/2014/11/04/analoge-messwerte-mit-einem-adc-uber-spi-auslesen/
R2R:
- wenige MHz
- https://en.wikipedia.org/wiki/Resistor_ladder
- http://shelvin.de/ein-r2r-4-bit-digital-analog-wandler-wird-aufgebaut/
- http://shelvin.de/ein-rechteck-signal-ausgeben-mit-dem-r-2r-da-wandler/
- http://shelvin.de/ein-rechteck-sgnal-mit-einstellbarer-frequenz-ausgeben/
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