The Tiny Function Generator uses a method called DDS (Direct Digital Synthesis) on an ATtiny85 microcontroller, which [David] wrote up in an earlier post of his about waveform generation on an ...

For example, a 128×64 monochrome OLED requires a 1024 byte buffer, but that’s bad news if a microcontroller has only 512 bytes of RAM in total like the ATtiny85.

– OLED Kit: printed circuit board, 128 x 64 px OLED display module w/ SSD1306 controller, 1 x 4 female right angle connector, 2 x 4 male header, 2 x 5 male header, 8.2 kΩ resistor (1/8 W), 100 ...