NES Controllers Explained

In this episode I break down a NES-004 brick style controller and explain how it works. Support the channel on Patreon: https://patreon.com/neshacker Controller Code GitHub Project - https://github.com/NesHacker/NesExplained/tree/main/Controllers CD4021 Datasheet (Texas Instruments) - https://www.ti.com/lit/ds/symlink/cd4021b-q1.pdf Chapters: 0:00 Introduction 1:20 Opening a Controller 2:28 NES-004 Electronics 4:18 Button Circuitry 7:10 Reading Controller Data 9:37 Controller Code 16:20 Conclusion