diff --git a/playstation/README.md b/playstation/README.md
index f295ba1..c8db4d8 100644
--- a/playstation/README.md
+++ b/playstation/README.md
@@ -4,3 +4,24 @@
 - You will need one [Atmega32u4](https://pt.aliexpress.com/item/New-Pro-Micro-ATmega32U4-5V-16MHz-Module-with-2-row-pin-header-For-Leonardo-best-quality/32273120508.html?spm=2114.13010608.0.0.Uv843y&detailNewVersion=&categoryId=400103) (e.g. Arduino Leonardo).
 
 ![playstation-adapter](Sony_Playstation_Multitap.jpg)
+
+## Wiring the Controller
+As the following picture from the [amazing CuriousInventor PS2 Interface Guide](https://store.curiousinventor.com/guides/PS2) shows, PlayStation controllers use 9 pins:
+
+![PS2 Controller Pinout](https://store.curiousinventor.com/wp-content/uploads/2019/09/wiring.jpg)
+
+| Pin # | Signal      | Direction                 | Notes          |
+|-------|-------------|---------------------------|----------------|
+| 1     | Data        | Controller -> PlayStation | Open Collector |
+| 2     | Command     | PlayStation -> Controller |                |
+| 3     | Motor Power |                           | 7.5V           |
+| 4     | Ground      |                           |                |
+| 5     | Power       |                           | 3.6V           |
+| 6     | Attention   | PlayStation -> Controller |                |
+| 7     | Clock       | PlayStation -> Controller |                |
+| 8     | (Unknown)   |                           |                |
+| 9     | Acknowledge | Controller -> PlayStation | Open Collector |
+
+**You are advised not to rely on wire colors, but rather on pin positions**. The wires in the image come from an official Sony controller, I expect their colors to be fairly consistent among all Sony controllers, but you shouldn't really trust them.
+
+-- documentation taken from https://github.com/SukkoPera/PsxNewLib