like [David Johnson-Davies]’s Tiny Function Generator which uses an ATtiny85 to generate different waveforms at up to 5 kHz. It’s complete with a small OLED display to show the waveform and ...
Small I2C OLED displays are common nowadays ... news if a microcontroller has only 512 bytes of RAM in total like the ATtiny85. [David Johnson-Davies] has two solutions: a Tiny Graphics Library ...