diff --git a/README.org b/README.org
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--- a/README.org
+++ b/README.org
@@ -2,12 +2,18 @@
 
 This project aims to create a generic esp32-s3 based eurorack modular unit—reprogramable to allow for multiple modular possibilities.
 
-* Specs  
+* Specs
 - 18 HP
 - I/O
   - 4 channel input
   - 4 channel output
-  - Output signal 0 -> +5V
+  - Output signal 0 -> ~+5V
   - 2 Rotary encoder switches
   - 4 buttons
 - 2.2in TFT LCD Display
+
+* Hardware
+** MCP4728 Quad 12bit I2C DAC
+- [[https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/22187E.pdf][Datasheet]]
+- [[https://learn.adafruit.com/adafruit-mcp4728-i2c-quad-dac][Adafruit Info Page]]
+- 0 -> ~+5V out