a single data wire, serial monitor on an attiny13a using a 128x64 oled ssd1306 (just to clarify the attiny13 is the slave accepting serial text from a host) YOU CAN ONLY SEND UPPERCASE ASCII LETTERS ...
Software for the 8x10 Pixel Serial Display Driver for the ATTiny13A. Download the ATTiny13A Board and Install it in the Arduino IDE: https://mcudude.github.io ...