RollAByte

The same Roll a Byte, right in your hands this time.

This is a simple device to produce a random byte and show it on a 72x40 OLED display and 8 LEDs, powered by an ATmega88PA and the amazing U8g2 library.

Build

This repository is a PlatformIO project. To build the project, clone this repository and open in PlatformIO IDE / build with PlatformIO CLI.

git clone --recurse-submodules https://github.com/45gfg9/RollAByte.git
cd RollAByte
pio run

The fuse settings are set to use the internal 8MHz oscillator with the CKDIV8 fuse disabled. For ATmega88PA, the fuses are set as follows:

• Low: 0xe2
• High: 0xdf
• Extended: 0xff

avrdude -pm88p -cusbasp -Ulfuse:w:0xe2:m -Uhfuse:w:0xdf:m -Uefuse:w:0xff:m

Hardware

The schematic, PCB layout and EasyEDA source are available in the hardware directory.

License

This project is licensed under the WTFPL license. See the LICENSE file for details.

The font used in the display is fcambus/spleen, which is licensed under the BSD 2-Clause license.