A small quantity of joy is added to the Universe each time a knob is spun.
Using the AS5048B from AMS allows the knob to rotate freely and infinitely while reading the position via I2C. AMS makes a handy and inexpensive eval-board which is available from Mouser: 985-AS5048A-TS_EK_AB
In essence, this is a rotational encoder capable of 1/20th degree resolution (7300 counts per revolution). The technology is also useful in robotics to quantify wheel rotation or joint extension.
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Designed for Matrix Orbital EVE2 SPI TFT Displays
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This code makes use of the Matrix Orbital EVE2 Library found here:
https://github.com/MatrixOrbital/EVE2-Library
- While a copy of the library files (Eve2_81x.c and Eve2_81x.h) is included here, you may look for updated files if you wish. This is optional, but the Eve2-Library is likely to contain an extension of what you have here in case you wish to make some more advanced screens.
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Matrix Orbital EVE2 SPI TFT display information can be found at: https://www.matrixorbital.com/ftdi-eve
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An Arduino shield with a connector for Matrix Orbital EVE2 displays is used to interface the Arduino to Eve.
This shield includes:- 20 contact FFC connector for Matrix Orbital EVE2 displays
- 3 pushbuttons for application control without requiring a touchscreen (useful for initial calibration)
- Audio amplifier and speaker for audio feedback
- SD card holder
- Additionally, the shield board is automatically level shifted for 5V Arduino and works with 3.3V Parallax Propeller ASC+
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