Explore the challenges and solutions of programming the ATTiny13 microcontroller in this informative 26-minute video. Delve into the process of obtaining the Oscillation Calibration (OSCCAL) value and discover why serial output may not perform as expected. Learn about efforts to optimize the Serial library for this tiny chip, following the work of Nerd Ralph and MCUDude. Gain insights into using external interrupts, implementing software UART, and accessing over 100 ATTiny13 projects. Discover product recommendations, including where to purchase ATTiny13 chips and development boards. Perfect for electronics enthusiasts looking to push the boundaries of miniature microcontroller programming.