Making The Schematic (GTB 5.0) posted on May 23, 2020 Topic Progress: ← Back to Lesson In this video Chris hooks up the custom symbol created in the last video, as well as the passives (such as resistors, capacitors) and LEDs and a battery holder. 555 Timer Flashing LED circuit 555 Timer page on Wikipedia NXP 7555 datasheet ← Previous Topic