diff --git a/Optional-features.md b/Optional-features.md
new file mode 100644
index 0000000..4ed216c
--- /dev/null
+++ b/Optional-features.md
@@ -0,0 +1,13 @@
+# OLED display
+The current firmware has an option to use an OLED display (128x64). 
+This allows you to see which MIDI channel is set up on purrChestrion. 
+Simply connect the display on the provided I2C port on the board. 
++5V and GND are provided as well. 
+Make sure your OLED display handles 5 volts input (from my experience, most of them are designed for 5 volts, but YMMV)
+
+When using this option, I recommend using the optional rotary encoder as well to easily select the MIDI channel.
+
+# Rotary encoder
+
+The current firmware has an option to use a rotary encoder on pins 2 and 3.
+Connect the middle pin of the rotary encoder to GND, pin A of the rotary encoder to D2, and pin B to D3.
\ No newline at end of file