From e603ae29e6bb8a361e5c871a358a7063f144a75d Mon Sep 17 00:00:00 2001
From: Jay Robson <jsrobson10@gmail.com>
Date: Tue, 1 Oct 2024 02:08:38 +1000
Subject: [PATCH] improved readme

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 5af5e3a..add2164 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,22 @@
 
+# Overview
+
 This uses an AVR microcontroller (ATMega328P-PU, which is in the Uno R3). 
 - Microconroller: https://git.onewaycoding.com/jay/tone-generator
 - MIDI parser: https://git.onewaycoding.com/jay/midi-parser
 
 ![Project](Project.jpg)
 
+# Pin Description
+
++--------+----------------------------------+
+| Pin(s) | Purpose                          |
++--------+----------------------------------+
+| 0-7    | 8-bit ADC (for audio)            |
+| 8      | Next button                      |
+| 9-10   | LEDs                             |
+| 11-13  | ISP Programmer, otherwise unused |
+| A0-A3  | Serial (with flow control)       |
+| A4-A5  | I2C                              |
++--------+----------------------------------+
+