From b386c5b15fcfd147b7544029035eacacdcad26d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?King=20K=C3=A9vin?= <kingkevin@cuvoodoo.info>
Date: Wed, 18 May 2022 17:31:17 +0200
Subject: [PATCH] document v1 in changelog

---
 CHANGELOG.md | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index ffcdfbb..07472e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,24 @@
+v1
+--
+
+second prototype built.
+
+needs a couple of small fixes, but works much better.
+
+fixes (from v0):
+- an LDO replaces the zener diode as voltage reference
+- the voltage reference (2.1V) is below common-mode input-voltage range
+- USB-C plug tab mounting holes made larger
+
+additions:
+- quad op-amp instead of dual op-amp is used
+- other 2 op-amp circuits are used to indicate over-voltage using an LED
+- more compact dual common-cathode diodes are used
+
+errors:
+- no decoupling caps around LDO
+- no clearance around USB-C receptacle mount holes, causing the non-plated hole to be fabbed plated, and shorting ground to internal layers
+
 v0
 --