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Fix voltage divisor resistance values
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Previous values were wrong and would saturate the ADC.
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dbrgn committed May 6, 2017
1 parent 2f9843f commit 6018104
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Showing 4 changed files with 23 additions and 17 deletions.
32 changes: 19 additions & 13 deletions backplane.net
@@ -1,14 +1,14 @@
(export (version D)
(design
(source /mnt/data/Projects/ic880a-sensor-backplane/backplane.sch)
(date "Fri 21 Apr 2017 10:55:16 AM CEST")
(date "Sat 06 May 2017 10:43:58 PM CEST")
(tool "Eeschema 4.0.6")
(sheet (number 1) (name /) (tstamps /)
(title_block
(title "iC880A RPi Backplane")
(company "Danilo Bargen / Coredump Rapperswil")
(rev v1.1)
(date 2017-04-19)
(date 2017-04-21)
(source backplane.sch)
(comment (number 1) (value "Buy from https://shop.coredump.ch/"))
(comment (number 2) (value ""))
Expand Down Expand Up @@ -139,6 +139,9 @@
(comp (ref D4)
(value D)
(footprint DO214:DO-214AC)
(datasheet http://mikroshop.ch/pdf/ss12.pdf)
(fields
(field (name Model) "Vishay SS14"))
(libsource (lib device) (part D))
(sheetpath (names /) (tstamps /))
(tstamp 589CC7B2))
Expand Down Expand Up @@ -208,15 +211,15 @@
(value R)
(footprint Resistors_SMD:R_0805)
(fields
(field (name R) 3.9kΩ))
(field (name R) 3.6kΩ))
(libsource (lib device) (part R))
(sheetpath (names /) (tstamps /))
(tstamp 58F15A4C))
(comp (ref R10)
(value R)
(footprint Resistors_SMD:R_0805)
(fields
(field (name R) 3.6kΩ))
(field (name R) 6.8kΩ))
(libsource (lib device) (part R))
(sheetpath (names /) (tstamps /))
(tstamp 58F15AE0))
Expand Down Expand Up @@ -263,6 +266,9 @@
(comp (ref D6)
(value D)
(footprint DO214:DO-214AC)
(datasheet http://mikroshop.ch/pdf/ss12.pdf)
(fields
(field (name Model) "Vishay SS14"))
(libsource (lib device) (part D))
(sheetpath (names /) (tstamps /))
(tstamp 58F9565C))
Expand Down Expand Up @@ -560,22 +566,22 @@
(libraries
(library (logical device)
(uri /usr/share/kicad/library/device.lib))
(library (logical adc-dac)
(uri /usr/share/kicad/library/adc-dac.lib))
(library (logical ic880a-spi)
(uri /mnt/data/Projects/ic880a-sensor-backplane/ic880a-spi.lib))
(library (logical headers)
(uri /mnt/data/Projects/ic880a-sensor-backplane/headers.lib))
(library (logical adc-dac)
(uri /usr/share/kicad/library/adc-dac.lib))
(library (logical backplane-cache)
(uri /mnt/data/Projects/ic880a-sensor-backplane/backplane-cache.lib))
(library (logical switches)
(uri /usr/share/kicad/library/switches.lib))
(library (logical regulators)
(uri /home/danilo/Projects/ic880a-sensor-backplane/regulators.lib))
(library (logical sensirion)
(uri /home/danilo/Projects/ic880a-sensor-backplane/sensirion.lib))
(library (logical raspi)
(uri /mnt/data/Projects/ic880a-sensor-backplane/raspi.lib)))
(uri /mnt/data/Projects/ic880a-sensor-backplane/raspi.lib))
(library (logical regulators)
(uri /home/danilo/Projects/ic880a-sensor-backplane/regulators.lib))
(library (logical switches)
(uri /usr/share/kicad/library/switches.lib))
(library (logical backplane-cache)
(uri /mnt/data/Projects/ic880a-sensor-backplane/backplane-cache.lib)))
(nets
(net (code 1) (name LED1)
(node (ref Q1) (pin 1))
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2 changes: 1 addition & 1 deletion backplane.pro
@@ -1,4 +1,4 @@
update=Wed 19 Apr 2017 10:46:27 PM CEST
update=Sat 06 May 2017 10:45:02 PM CEST
version=1
last_client=kicad
[pcbnew]
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6 changes: 3 additions & 3 deletions backplane.sch
Expand Up @@ -41,7 +41,7 @@ $Descr A4 11693 8268
encoding utf-8
Sheet 1 1
Title "iC880A RPi Backplane"
Date "2017-04-21"
Date "2017-05-06"
Rev "v1.1"
Comp "Danilo Bargen / Coredump Rapperswil"
Comment1 "Buy from https://shop.coredump.ch/"
Expand Down Expand Up @@ -731,7 +731,7 @@ F 0 "R11" V 9030 3650 50 0000 C CNN
F 1 "R" V 8950 3650 50 0000 C CNN
F 2 "Resistors_SMD:R_0805" V 8880 3650 50 0001 C CNN
F 3 "" H 8950 3650 50 0000 C CNN
F 4 "3.9kΩ" V 8850 3650 60 0000 C CNN "R"
F 4 "3.6kΩ" V 8850 3650 60 0000 C CNN "R"
1 8950 3650
1 0 0 -1
$EndComp
Expand All @@ -743,7 +743,7 @@ F 0 "R10" V 9030 3250 50 0000 C CNN
F 1 "R" V 8950 3250 50 0000 C CNN
F 2 "Resistors_SMD:R_0805" V 8880 3250 50 0001 C CNN
F 3 "" H 8950 3250 50 0000 C CNN
F 4 "3.6kΩ" V 8850 3250 60 0000 C CNN "R"
F 4 "6.8kΩ" V 8850 3250 60 0000 C CNN "R"
1 8950 3250
1 0 0 -1
$EndComp
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Binary file modified schematics-v1.1.pdf
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