03. Class - juxtapix/IMA_E4I GitHub Wiki Concepts: Integrated Circuits Oscillators and Timers Components: 555 Timer IC: Astable Mode Tools/Skills: Reading and Designing Schematics Oscilloscope 101 Readings: Semiconductors: 4.1 - 4.3 Oscillators and Timers: 10.2 LAB: 555 LED Flasher 555 LED Breather