From: Bdale Garbee <bdale@gag.com>
Date: Fri, 18 Apr 2025 21:10:39 +0000 (-0600)
Subject: add a second zener on schematic to protect the pressure sensor input
X-Git-Tag: fab-v2p2~8
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=ebe315fc7fd2fd7fde1e2ba33bc3e15ac753e5ec;p=hw%2Fquantimotor

add a second zener on schematic to protect the pressure sensor input
---

diff --git a/quantimotor.sch b/quantimotor.sch
index eb410fe..abf6da7 100644
--- a/quantimotor.sch
+++ b/quantimotor.sch
@@ -760,7 +760,7 @@ T 60800 59850 5 10 1 1 0 0 1
 netname=v_ldo_in
 }
 N 68600 59400 68600 59800 4
-N 73000 59700 75300 59700 4
+N 73100 59700 75300 59700 4
 {
 T 73600 59750 5 10 1 1 0 0 1
 netname=thrust
@@ -864,7 +864,7 @@ N 75300 58100 73600 58100 4
 T 73600 58150 5 10 1 1 0 0 1
 netname=analog3
 }
-N 73000 57500 73000 59700 4
+N 73100 57500 73100 59700 4
 C 74800 53200 1 0 0 nc-left.sym
 {
 T 74800 53600 5 10 0 0 0 0 1
@@ -972,19 +972,19 @@ N 78900 57300 79100 57300 4
 C 80500 54900 1 0 0 gnd.sym
 C 79600 54900 1 0 0 gnd.sym
 N 61500 57400 61500 57000 4
-N 73000 57500 69900 57500 4
-C 73200 56600 1 90 0 zener.sym
+N 73100 57500 69900 57500 4
+C 73300 56600 1 90 0 zener.sym
 {
-T 72600 57000 5 10 0 0 90 0 1
+T 72700 57000 5 10 0 0 90 0 1
 device=DIODE
-T 73200 56600 5 10 0 1 0 0 1
+T 73300 56600 5 10 0 1 0 0 1
 footprint=0805diode
-T 72700 56800 5 10 1 1 0 6 1
+T 72800 56800 5 10 1 1 0 6 1
 refdes=Z1
-T 72700 57100 5 10 1 1 0 6 1
+T 72800 57100 5 10 1 1 0 6 1
 value=5.6V
 }
-C 72900 56300 1 0 0 gnd.sym
+C 73000 56300 1 0 0 gnd.sym
 T 70100 60600 9 10 1 0 0 0 2
 5V Pressure
 Sensor Only
@@ -2238,3 +2238,21 @@ L 64300 55200 63900 55200 3 10 1 0 -1 -1
 L 64300 54000 63900 54000 3 10 1 0 -1 -1
 L 63900 55200 63900 55000 3 10 1 0 -1 -1
 L 63900 54000 63900 54200 3 10 1 0 -1 -1
+C 72800 58200 1 90 0 zener.sym
+{
+T 72200 58600 5 10 0 0 90 0 1
+device=DIODE
+T 72800 58200 5 10 0 1 0 0 1
+footprint=0805diode
+T 72300 58400 5 10 1 1 0 6 1
+refdes=Z2
+T 72300 58700 5 10 1 1 0 6 1
+value=5.6V
+}
+C 72500 57900 1 0 0 gnd.sym
+N 72600 59100 72600 60500 4
+T 69900 58000 9 10 1 0 0 0 4
+Zener to protect ADC 
+input if user hooks up
+something random.
+