diff --git a/Zettelkasten/Fleeting Notes/Daily/2025-08-19.md b/Zettelkasten/Fleeting Notes/Daily/2025-08-19.md
index 6b444c27..bf489501 100644
--- a/Zettelkasten/Fleeting Notes/Daily/2025-08-19.md	
+++ b/Zettelkasten/Fleeting Notes/Daily/2025-08-19.md	
@@ -3,7 +3,7 @@ id: 2025-08-19
 title: Daily — 2025-08-19
 type: daily
 created: 2025-08-19T14:31:15Z
-modified: 2025-08-19T14:32:01Z
+modified: 2025-08-19T18:44:01Z
 tags: [daily]
 ---
 
@@ -26,3 +26,30 @@ Goals for today:
 - [ ] 
 
 ## Notes
+
+Here is a list of I/O we can use in the PLC Cabinet:
+
+1. MODBUS compatibility (Babay / Cole)
+    - Over Ethernet is ideal, but other mediums would also
+    be nice to have.
+
+2. DNP3 (Babay)
+
+3. HART (Babay)
+
+4. Analog Inputs / Outputs
+    - +/- 10 V for dSPACE (Maximum range)
+    - +/- 10 V for TQ Equipment (Ball and Beam)
+    - 0-1.8V for BeagleBone Black
+    - IO101 from Speedgoat can use all of above (and +/- 5
+    V, +/- 3.3V)
+
+5. Digital Inputs / Outputs
+    - 10 V dSPACE and related
+    - 3.3 V for BeagleBone Black
+    - 5 V for Arduino
+    - IO101 can use all of above
+
+Obviously for digital signals we can use voltage regulators
+if required but it would definitely be nice to have 3.3V
+capability for the BeagleBone, and 5V for an Arduino.