2018-11-14 12:00

20 files changed, 1304 insertions, 135 deletions

diff --git a/PCB/_saved_galvanostat.sch b/PCB/_saved_galvanostat.sch
new file mode 100644
index 0000000..e1b3727
--- /dev/null
+++ b/PCB/_saved_galvanostat.sch
@@ -0,0 +1,715 @@
+EESchema Schematic File Version 4
+LIBS:galvanostat-cache
+EELAYER 26 0
+EELAYER END
+$Descr USLetter 11000 8500
+encoding utf-8
+Sheet 1 1
+Title "Dual Galvanostat"
+Date "2018-11-14"
+Rev "B"
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+P 5100 3850
+F 0 "R2" H 5032 3804 50  0000 R CNN
+F 1 "240Ω" H 5032 3895 50  0000 R CNN
+F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5140 3840 50  0001 C CNN
+F 3 "~" H 5100 3850 50  0001 C CNN
+	1    5100 3850
+	-1   0    0    1   
+$EndComp
+$Comp
+L Device:R_US R3
+U 1 1 5BE9C817
+P 5100 4150
+F 0 "R3" H 5168 4196 50  0000 L CNN
+F 1 "240Ω" H 5168 4105 50  0000 L CNN
+F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5140 4140 50  0001 C CNN
+F 3 "~" H 5100 4150 50  0001 C CNN
+	1    5100 4150
+	1    0    0    -1  
+$EndComp
+$Comp
+L power:GND #PWR0120
+U 1 1 5BEA5EE3
+P 5100 4300
+F 0 "#PWR0120" H 5100 4050 50  0001 C CNN
+F 1 "GND" H 5105 4127 50  0000 C CNN
+F 2 "" H 5100 4300 50  0001 C CNN
+F 3 "" H 5100 4300 50  0001 C CNN
+	1    5100 4300
+	1    0    0    -1  
+$EndComp
+Wire Wire Line
+	5100 4000 5600 4000
+Connection ~ 5100 4000
+Connection ~ 6450 2250
+Wire Wire Line
+	6450 2250 6450 2350
+Wire Wire Line
+	6450 2650 6450 2550
+Wire Wire Line
+	6450 2550 6750 2550
+Wire Wire Line
+	6450 2350 6750 2350
+Wire Wire Line
+	4850 1950 5350 1950
+Wire Wire Line
+	5350 1950 5350 2550
+Wire Wire Line
+	5350 2550 5550 2550
+Connection ~ 4850 1950
+Wire Wire Line
+	4700 2550 5200 2550
+Wire Wire Line
+	5200 2550 5200 2150
+Wire Wire Line
+	5200 2150 5550 2150
+Connection ~ 4700 2550
+$EndSCHEMATC
diff --git a/PCB/back.pdf b/PCB/back.pdf
index c5f7fe0..0ee955a 100644
--- a/PCB/back.pdf
+++ b/PCB/back.pdf
diff --git a/PCB/front.pdf b/PCB/front.pdf
index 098dcc2..38ed2e7 100644
--- a/PCB/front.pdf
+++ b/PCB/front.pdf
diff --git a/PCB/galvanostat.bak b/PCB/galvanostat.bak
index 95cf6b2..74b939a 100644
--- a/PCB/galvanostat.bak
+++ b/PCB/galvanostat.bak
@@ -2,11 +2,11 @@ EESchema Schematic File Version 4
 LIBS:galvanostat-cache
 EELAYER 26 0
 EELAYER END
-$Descr A4 11693 8268
+$Descr USLetter 11000 8500
 encoding utf-8
 Sheet 1 1
 Title "Dual Galvanostat"
-Date "2018-11-09"
+Date "2018-11-14"
 Rev "B"
 Comp ""
 Comment1 ""
@@ -346,10 +346,6 @@ Wire Wire Line
 Connection ~ 4450 2250
 Wire Wire Line
 	4450 1950 4850 1950
-Wire Wire Line
-	4850 1950 4850 2150
-Wire Wire Line
-	4850 2150 5550 2150
 $Comp
 L power:+15V #PWR0110
 U 1 1 5BE8B06B
@@ -588,7 +584,6 @@ F 3 "~" H 5050 1900 50  0001 C CNN
 $EndComp
 Wire Wire Line
 	4850 1900 4850 1950
-Connection ~ 4850 1950
 $Comp
 L Connector:TestPoint TP3
 U 1 1 5BEBBCC0
@@ -602,9 +597,6 @@ F 3 "~" H 4900 2500 50  0001 C CNN
 $EndComp
 Wire Wire Line
 	4700 2500 4700 2550
-Connection ~ 4700 2550
-Wire Wire Line
-	4700 2550 5550 2550
 $Comp
 L Connector:TestPoint TP2
 U 1 1 5BEBD293
@@ -697,15 +689,27 @@ $EndComp
 Wire Wire Line
 	5100 4000 5600 4000
 Connection ~ 5100 4000
+Connection ~ 6450 2250
+Wire Wire Line
+	6450 2250 6450 2350
+Wire Wire Line
+	6450 2650 6450 2550
+Wire Wire Line
+	6450 2550 6750 2550
 Wire Wire Line
 	6450 2350 6750 2350
 Wire Wire Line
-	6450 2350 6450 2650
+	4850 1950 5350 1950
 Wire Wire Line
-	6450 2250 6600 2250
+	5350 1950 5350 2550
 Wire Wire Line
-	6600 2250 6600 2550
+	5350 2550 5550 2550
+Connection ~ 4850 1950
 Wire Wire Line
-	6600 2550 6750 2550
-Connection ~ 6450 2250
+	4700 2550 5200 2550
+Wire Wire Line
+	5200 2550 5200 2150
+Wire Wire Line
+	5200 2150 5550 2150
+Connection ~ 4700 2550
 $EndSCHEMATC
diff --git a/PCB/galvanostat.kicad_pcb b/PCB/galvanostat.kicad_pcb
index f207e71..5da1831 100644
--- a/PCB/galvanostat.kicad_pcb
+++ b/PCB/galvanostat.kicad_pcb
@@ -12,8 +12,8 @@
   (page USLetter)
   (title_block
     (title "Dual Galvanostat")
-    (date 2018-11-07)
-    (rev a)
+    (date 2018-11-14)
+    (rev B)
   )
 
   (layers
diff --git a/PCB/galvanostat.kicad_pcb-bak b/PCB/galvanostat.kicad_pcb-bak
index fe9668c..f207e71 100644
--- a/PCB/galvanostat.kicad_pcb-bak
+++ b/PCB/galvanostat.kicad_pcb-bak
@@ -3,7 +3,7 @@
   (general
     (thickness 1.6)
     (drawings 14)
-    (tracks 209)
+    (tracks 203)
     (zones 0)
     (modules 27)
     (nets 24)
@@ -66,7 +66,7 @@
     (pad_to_mask_clearance 0.051)
     (solder_mask_min_width 0.25)
     (aux_axis_origin 0 0)
-    (grid_origin 140.97 73.66)
+    (grid_origin 135.89 69.85)
     (visible_elements FFFFFF7F)
     (pcbplotparams
       (layerselection 0x01000_ffffffff)
@@ -904,13 +904,13 @@
     (pad 7 thru_hole oval (at 7.62 2.54 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
       (net 16 "Net-(U3-Pad6)"))
     (pad 3 thru_hole oval (at 0 5.08 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
-      (net 10 "Net-(R1-Pad2)"))
+      (net 11 "Net-(RV3-Pad1)"))
     (pad 6 thru_hole oval (at 7.62 5.08 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
       (net 16 "Net-(U3-Pad6)"))
     (pad 2 thru_hole oval (at 0 2.54 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
       (net 17 "Net-(U3-Pad1)"))
     (pad 5 thru_hole oval (at 7.62 7.62 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
-      (net 11 "Net-(RV3-Pad1)"))
+      (net 10 "Net-(R1-Pad2)"))
     (pad 1 thru_hole rect (at 0 0 90) (size 2.4 1.6) (drill 0.8) (layers *.Cu *.Mask)
       (net 17 "Net-(U3-Pad1)"))
     (model ${KISYS3DMOD}/Package_DIP.3dshapes/DIP-8_W7.62mm_Socket.wrl
@@ -1445,30 +1445,24 @@
   (segment (start 129.54 55.88) (end 129.54 58.42) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 129.54 50.8) (end 132.08 53.34) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 127 50.8) (end 129.54 50.8) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 142.24 60.282) (end 144.188 62.23) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 142.24 58.42) (end 142.24 60.282) (width 0.762) (layer B.Cu) (net 10))
-  (via (at 146.05 77.47) (size 0.8) (drill 0.4) (layers F.Cu B.Cu) (net 10))
-  (segment (start 146.05 73.66) (end 146.05 77.47) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 146.05 77.47) (end 149.86 77.47) (width 0.762) (layer F.Cu) (net 10))
-  (segment (start 149.86 77.47) (end 151.13 76.2) (width 0.762) (layer F.Cu) (net 10))
-  (via (at 151.13 62.23) (size 0.8) (drill 0.4) (layers F.Cu B.Cu) (net 10))
-  (segment (start 151.13 76.2) (end 151.13 62.23) (width 0.762) (layer F.Cu) (net 10))
-  (segment (start 151.13 62.23) (end 147.32 62.23) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 144.188 62.23) (end 147.32 62.23) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 147.32 62.23) (end 148.59 62.23) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 142.24 50.8) (end 142.24 58.42) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 138.43 46.99) (end 142.24 50.8) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 129.54 50.8) (end 133.35 46.99) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 133.35 46.99) (end 138.43 46.99) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 124.46 50.8) (end 127 50.8) (width 0.762) (layer B.Cu) (net 10))
-  (segment (start 148.59 64.078) (end 148.59 66.04) (width 0.762) (layer B.Cu) (net 11))
-  (segment (start 142.24 63.5) (end 148.012 63.5) (width 0.762) (layer B.Cu) (net 11))
-  (segment (start 139.7 60.96) (end 142.24 63.5) (width 0.762) (layer B.Cu) (net 11))
-  (segment (start 148.012 63.5) (end 148.59 64.078) (width 0.762) (layer B.Cu) (net 11))
-  (segment (start 139.7 58.42) (end 139.7 60.96) (width 0.762) (layer B.Cu) (net 11))
+  (segment (start 142.24 58.42) (end 147.32 58.42) (width 0.762) (layer B.Cu) (net 10))
+  (segment (start 148.59 59.69) (end 148.59 66.04) (width 0.762) (layer B.Cu) (net 10))
+  (segment (start 147.32 58.42) (end 148.59 59.69) (width 0.762) (layer B.Cu) (net 10))
   (segment (start 135.89 58.42) (end 135.89 50.8) (width 0.762) (layer B.Cu) (net 11))
   (segment (start 135.89 58.42) (end 132.08 58.42) (width 0.762) (layer B.Cu) (net 11))
   (segment (start 139.7 58.42) (end 135.89 58.42) (width 0.762) (layer B.Cu) (net 11))
+  (via (at 135.89 63.5) (size 0.8) (drill 0.4) (layers F.Cu B.Cu) (net 11))
+  (segment (start 135.89 58.42) (end 135.89 63.5) (width 0.762) (layer B.Cu) (net 11))
+  (segment (start 135.89 63.5) (end 135.89 69.85) (width 0.762) (layer F.Cu) (net 11))
+  (via (at 135.89 69.85) (size 0.8) (drill 0.4) (layers F.Cu B.Cu) (net 11))
+  (segment (start 135.89 69.85) (end 144.78 69.85) (width 0.762) (layer B.Cu) (net 11))
+  (segment (start 144.78 69.85) (end 146.05 71.12) (width 0.762) (layer B.Cu) (net 11))
+  (segment (start 146.05 71.12) (end 146.05 73.66) (width 0.762) (layer B.Cu) (net 11))
   (segment (start 116.84 60.96) (end 127 60.96) (width 0.762) (layer B.Cu) (net 12))
   (segment (start 127 60.96) (end 127 58.42) (width 0.762) (layer B.Cu) (net 12))
   (segment (start 144.78 66.04) (end 146.05 66.04) (width 0.762) (layer B.Cu) (net 16))
diff --git a/PCB/galvanostat.pro b/PCB/galvanostat.pro
index ef261ab..20b5d20 100644
--- a/PCB/galvanostat.pro
+++ b/PCB/galvanostat.pro
@@ -1,4 +1,4 @@
-update=Tue 13 Nov 2018 06:48:03 PM CST
+update=Wed 14 Nov 2018 08:48:38 AM CST
 version=1
 last_client=kicad
 [general]
@@ -33,7 +33,7 @@ BoardOutlineThickness=0.15
 ModuleOutlineThickness=0.15
 [schematic_editor]
 version=1
-PageLayoutDescrFile=/home/blaise/shops/Elec/Projects/2018-11-01 Oliver Williams - simple low-current galvanostat/PCB/blaise.kicad_wks
+PageLayoutDescrFile=blaise.kicad_wks
 PlotDirectoryName=
 SubpartIdSeparator=0
 SubpartFirstId=65
diff --git a/PCB/galvanostat.sch b/PCB/galvanostat.sch
index 8f3803b..e1b3727 100644
--- a/PCB/galvanostat.sch
+++ b/PCB/galvanostat.sch
@@ -2,11 +2,11 @@ EESchema Schematic File Version 4
 LIBS:galvanostat-cache
 EELAYER 26 0
 EELAYER END
-$Descr A4 11693 8268
+$Descr USLetter 11000 8500
 encoding utf-8
 Sheet 1 1
 Title "Dual Galvanostat"
-Date "2018-11-09"
+Date "2018-11-14"
 Rev "B"
 Comp ""
 Comment1 ""
@@ -658,7 +658,7 @@ L Device:R_US R2
 U 1 1 5BE9C7BD
 P 5100 3850
 F 0 "R2" H 5032 3804 50  0000 R CNN
-F 1 "R_US" H 5032 3895 50  0000 R CNN
+F 1 "240Ω" H 5032 3895 50  0000 R CNN
 F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5140 3840 50  0001 C CNN
 F 3 "~" H 5100 3850 50  0001 C CNN
 	1    5100 3850
@@ -669,7 +669,7 @@ L Device:R_US R3
 U 1 1 5BE9C817
 P 5100 4150
 F 0 "R3" H 5168 4196 50  0000 L CNN
-F 1 "R_US" H 5168 4105 50  0000 L CNN
+F 1 "240Ω" H 5168 4105 50  0000 L CNN
 F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal" V 5140 4140 50  0001 C CNN
 F 3 "~" H 5100 4150 50  0001 C CNN
 	1    5100 4150
diff --git a/PCB/pcb.pdf b/PCB/pcb.pdf
index ee4d004..1e150af 100644
--- a/PCB/pcb.pdf
+++ b/PCB/pcb.pdf
diff --git a/PCB/schematic.pdf b/PCB/schematic.pdf
new file mode 100644
index 0000000..12ac9b1
--- /dev/null
+++ b/PCB/schematic.pdf
diff --git a/data/2018-11-14/load.png b/data/2018-11-14/load.png
new file mode 100644
index 0000000..9009409
--- /dev/null
+++ b/data/2018-11-14/load.png
diff --git a/data/2018-11-14/load.txt b/data/2018-11-14/load.txt
new file mode 100644
index 0000000..41344c8
--- /dev/null
+++ b/data/2018-11-14/load.txt
@@ -0,0 +1,25 @@
+# load (ohms),R (mV),L (mV)
+15,17.8,17.3
+22,24.7,23.9
+33,35.4,34.2
+47,46.2,44.8
+68,70,4.68.4
+100,99.8,97.2
+150,164.4,160.3
+220,224.8,219.4
+330,339.2,331.4
+470,465,455
+680,708,693
+1000,1230,1204
+1500,1522,1489
+2200,2267,2218
+3300,3258,3183
+4700,4770,4670
+6800,6460,6330
+10000,9950,9650
+15000,13440,13440
+22000,13470,13480
+33000,13510,13520
+47000,13540,13550
+68000,13560,13570
+100000,13580,13580
diff --git a/data/2018-11-14/workup.py b/data/2018-11-14/workup.py
new file mode 100644
index 0000000..9103bdf
--- /dev/null
+++ b/data/2018-11-14/workup.py
@@ -0,0 +1,25 @@
+import pathlib
+import numpy as np
+import matplotlib.pyplot as plt
+
+__here__ = pathlib.Path(__file__).parent
+
+xi, r, l = np.genfromtxt('load.txt', delimiter=',').T
+
+plt.plot(xi, r)
+plt.scatter(xi, r, label='right')
+plt.plot(xi, l)
+plt.scatter(xi, l, label='left')
+
+plt.xlabel('load resistance (ohms)')
+plt.ylabel('applied voltage (mV)')
+plt.grid()
+plt.plot(xi, xi, c='k', alpha=0.5, lw=0.5)
+
+plt.ylim(0, 20000)
+plt.xlim(0, 100000)
+
+plt.legend()
+
+plt.savefig('load.png', dpi=300, transparent=True)
+plt.close()
diff --git a/manual/manual.aux b/manual/manual.aux
index 8a742ab..d69128f 100644
--- a/manual/manual.aux
+++ b/manual/manual.aux
@@ -16,8 +16,11 @@
 \gdef\HyperFirstAtBeginDocument#1{#1}
 \providecommand\HyField@AuxAddToFields[1]{}
 \providecommand\HyField@AuxAddToCoFields[2]{}
-\@writefile{toc}{\contentsline {section}{\numberline {1}Overview \& Performance}{2}{section.1}}
-\@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces  Measured current versus set current. On this log-log plot, the entire set-point range of 10 $\mu $A to 9.99 mA can clearly be seen. For both outputs, agreement within measurement error is achieved from 0.30 mA to 9.99 mA. Unfortunately, both outputs become nonlinear at the lowest setpoints, systematically overshooting the desired current. For an unknown reason, the agreement is worse for the left-hand output. All readings were taken with a load of 100 $\Omega $. }}{3}{figure.1}}
-\newlabel{fig:setpoint}{{1}{3}{Measured current versus set current. On this log-log plot, the entire set-point range of 10 $\mu $A to 9.99 mA can clearly be seen. For both outputs, agreement within measurement error is achieved from 0.30 mA to 9.99 mA. Unfortunately, both outputs become nonlinear at the lowest setpoints, systematically overshooting the desired current. For an unknown reason, the agreement is worse for the left-hand output. All readings were taken with a load of 100 $\Omega $}{figure.1}{}}
-\@writefile{toc}{\contentsline {section}{\numberline {2}Troubleshooting \& Repair}{4}{section.2}}
+\@writefile{toc}{\contentsline {section}{\numberline {1}Overview \& Performance}{1}{section.1}}
+\@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces  Measured current versus set current. On this log-log plot, the entire set-point range of 10 $\mu $A to 9.99 mA can clearly be seen. For both outputs, agreement within measurement error is achieved from 0.30 mA to 9.99 mA. Unfortunately, both outputs become nonlinear at the lowest setpoints, systematically overshooting the desired current. For an unknown reason, the agreement is worse for the left-hand output. All readings were taken with a load of 100 $\Omega $. }}{2}{figure.1}}
+\newlabel{fig:setpoint}{{1}{2}{Measured current versus set current. On this log-log plot, the entire set-point range of 10 $\mu $A to 9.99 mA can clearly be seen. For both outputs, agreement within measurement error is achieved from 0.30 mA to 9.99 mA. Unfortunately, both outputs become nonlinear at the lowest setpoints, systematically overshooting the desired current. For an unknown reason, the agreement is worse for the left-hand output. All readings were taken with a load of 100 $\Omega $}{figure.1}{}}
+\@writefile{lof}{\contentsline {figure}{\numberline {2}{\ignorespaces  Measured applied voltage versus load resistance. All readings were taken at a current set-point of 1 mA. The ``ideal'' ohms law behavior is represented by the grey diagonal line. Both outputs saturate at just above 13 V. }}{3}{figure.2}}
+\newlabel{fig:load}{{2}{3}{Measured applied voltage versus load resistance. All readings were taken at a current set-point of 1 mA. The ``ideal'' ohms law behavior is represented by the grey diagonal line. Both outputs saturate at just above 13 V}{figure.2}{}}
+\@writefile{toc}{\contentsline {section}{\numberline {2}Troubleshooting}{4}{section.2}}
 \@writefile{toc}{\contentsline {section}{\numberline {3}Appendix}{5}{section.3}}
+\@writefile{toc}{\contentsline {subsection}{\numberline {3.1}Parts}{6}{subsection.3.1}}
diff --git a/manual/manual.cls b/manual/manual.cls
index 57c399b..9327edb 100755
--- a/manual/manual.cls
+++ b/manual/manual.cls
@@ -8,6 +8,7 @@
 \setlength\parindent{0pt}
 \setlength{\parskip}{1em}
 \renewcommand{\familydefault}{\sfdefault}
+\RequirePackage{setspace}
 
 % force all floats to center (see https://tex.stackexchange.com/a/53383)
 \makeatletter
@@ -25,3 +26,22 @@ anchorcolor=black]{hyperref}
 % images
 \RequirePackage{graphicx}
 \RequirePackage{pdfpages}
+
+
+\usepackage{array}
+\newcolumntype{P}[1]{>{\raggedleft\arraybackslash}p{#1}}
+
+\RequirePackage[shortlabels]{enumitem}
+\setlist[itemize, 1]{nosep}
+\setlist[itemize, 2]{nosep, topsep=-5ex}
+\setlist[itemize, 3]{nosep, topsep=-5ex}
+\setlist[itemize, 4]{nosep, topsep=-5ex}
+\newenvironment{ditemize}
+  {
+  \begin{itemize}
+  \renewcommand{\labelitemi}{$\rightarrow$}
+  \singlespacing
+  }
+  {
+  \end{itemize}
+  }
diff --git a/manual/manual.log b/manual/manual.log
index b909e57..69fbc47 100644
--- a/manual/manual.log
+++ b/manual/manual.log
@@ -1,4 +1,4 @@
-This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2019/dev/Debian) (preloaded format=pdflatex 2018.10.22)  13 NOV 2018 18:49
+This is pdfTeX, Version 3.14159265-2.6-1.40.19 (TeX Live 2019/dev/Debian) (preloaded format=pdflatex 2018.11.13)  14 NOV 2018 11:59
 entering extended mode
  restricted \write18 enabled.
  %&-line parsing enabled.
@@ -59,6 +59,9 @@ Package: inputenc 2018/04/06 v1.3b Input encoding file
 \inpenc@prehook=\toks16
 \inpenc@posthook=\toks17
 )
+(/usr/share/texlive/texmf-dist/tex/latex/setspace/setspace.sty
+Package: setspace 2011/12/19 v6.7a set line spacing
+)
 (/usr/share/texlive/texmf-dist/tex/latex/hyperref/hyperref.sty
 Package: hyperref 2018/09/30 v6.88a Hypertext links for LaTeX
 
@@ -186,7 +189,7 @@ File: pdftex.def 2018/01/08 v1.0l Graphics/color driver for pdftex
 ))
 \Gin@req@height=\dimen115
 \Gin@req@width=\dimen116
-))
+)
 (/usr/share/texlive/texmf-dist/tex/latex/pdfpages/pdfpages.sty
 Package: pdfpages 2017/10/31 v0.5l Insert pages of external PDF documents (AM)
 
@@ -237,23 +240,41 @@ File: pppdftex.def 2017/10/31 v0.5l Pdfpages driver for pdfTeX (AM)
 \AM@toc@title=\toks19
 \c@AM@survey=\count104
 \AM@templatesizebox=\box27
-) (./manual.aux)
+)
+(/usr/share/texlive/texmf-dist/tex/latex/tools/array.sty
+Package: array 2018/04/30 v2.4h Tabular extension package (FMi)
+\col@sep=\dimen121
+\ar@mcellbox=\box28
+\extrarowheight=\dimen122
+\NC@list=\toks20
+\extratabsurround=\skip47
+\backup@length=\skip48
+\ar@cellbox=\box29
+)
+(/usr/share/texlive/texmf-dist/tex/latex/enumitem/enumitem.sty
+Package: enumitem 2011/09/28 v3.5.2 Customized lists
+\labelindent=\skip49
+\enit@outerparindent=\dimen123
+\enit@toks=\toks21
+\enit@inbox=\box30
+\enitdp@description=\count105
+)) (./manual.aux)
 \openout1 = `manual.aux'.
 
-LaTeX Font Info:    Checking defaults for OML/cmm/m/it on input line 6.
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diff --git a/manual/manual.out b/manual/manual.out
index 0109323..169f31f 100644
--- a/manual/manual.out
+++ b/manual/manual.out
@@ -1,3 +1,4 @@
 \BOOKMARK [1][-]{section.1}{Overview \046 Performance}{}% 1
-\BOOKMARK [1][-]{section.2}{Troubleshooting \046 Repair}{}% 2
+\BOOKMARK [1][-]{section.2}{Troubleshooting}{}% 2
 \BOOKMARK [1][-]{section.3}{Appendix}{}% 3
+\BOOKMARK [2][-]{subsection.3.1}{Parts}{section.3}% 4
diff --git a/manual/manual.pdf b/manual/manual.pdf
index 430e4dc..5ad13f0 100644
--- a/manual/manual.pdf
+++ b/manual/manual.pdf
diff --git a/manual/manual.tex b/manual/manual.tex
index a02eef2..a9ea404 100755
--- a/manual/manual.tex
+++ b/manual/manual.tex
@@ -1,15 +1,21 @@
 \documentclass{manual}
+\pagenumbering{gobble}
 
 \title{Dual Low-Current Galvanostat}
-\author{Blaise J Thompson}
+\author{Blaise Thompson}
 
 \begin{document}
 
 \maketitle
 
-% TODO: photo of final product
+\vspace*{\fill}
+\begin{center}
+  \includegraphics[width=0.75\linewidth]{../pictures/2018-11-14_104721}
+\end{center}
+\vspace*{\fill}
 
 \section{Overview \& Performance}
+\pagenumbering{arabic}
 
 The dual galvanostat is designed to force a small, constant current through an electrolytic cell.
 The voltage floats to whatever is needed to maintain that current.
@@ -32,6 +38,11 @@ The absolute deviation between setpoint and measured current never exceeds 30 $\
 Please note that the galvanostat is still capable of maintaining these low currents.
 The displayed value simply may not correspond to the actual current, so an independent calibration is warranted.
 
+\autoref{fig:load} shows the applied voltage as a function of load resistance.
+In all cases, the set current was 1 mA.
+The grey line shows ``ideal'' ohms law behavior.
+The saturation of the galvanostat at roughly 13 V can easily be seen.
+
 \clearpage
 \begin{figure}
   \includegraphics[width=\linewidth]{../data/2018-11-13/setpoint}
@@ -47,55 +58,106 @@ The displayed value simply may not correspond to the actual current, so an indep
 \end{figure}
 \clearpage
 
-\section{Troubleshooting \& Repair}
+\clearpage
+\begin{figure}
+  \includegraphics[width=\linewidth]{../data/2018-11-14/load}
+  \caption{
+    Measured applied voltage versus load resistance.
+    All readings were taken at a current set-point of 1 mA.
+    The ``ideal'' ohms law behavior is represented by the grey diagonal line.
+    Both outputs saturate at just above 13 V.
+  }
+  \label{fig:load}
+\end{figure}
+\clearpage
+
+\section{Troubleshooting}
+
+This section describes calibration and testing of the dual galvanostat.
+
+When troubleshooting or inspecting the circuit, start by testing each of the power test points.
+All power voltages should be measured relative to circuit common at test point 1.
+TP2 should be +15 V.
+TP5 should be -6 V.
+If these are not maintained, check the regulator U1, the inverter U4, and the capacitors C1, C2, C3, C4, \& C5.
+C4 and C5 are electrolytic, so they may be the most suspect.
+
+There are three board-level trimpots that can be adjusted to calibrate the output of the dual galvanostat.
+Refer to the schematic and board drawings at the end of this manual to find the location of these trimpots.
+They are all three Bourns 3296 series, blue boxes with brass adjusts on the top.
+
+The first trimpot, RV4, is located near the top of the PCB.
+Adjust this trimpot while monitoring the voltage at TP6 relative to circuit common (TP1).
+Adjust the external digipot (RV3), and ensure that the voltage at TP6 corresponds directly to the setting of RV3, in mV.
+For example, when RV3 reads 999, the voltage at TP6 should be 0.999 V.
+Typically it is best to adjust this pot with RV3 set to a large number, since this gives you the most sensitivity in defining the necessary proportionality.
+
+You may find that TP6 does not respond, or that the response is not proportional to the setting of RV3.
+In this case, there may be a problem with the differential amplifier U5 or with the dual buffer U3.
+Test the voltage difference between TP3 and TP4, noting that TP3 is always equal to or more positive than TP4.
+Like TP6, the voltage between these test points should correspond to the setting of RV3, in mV.
+If you are able to confirm correct behavior at TP3 \& TP4 but not at TP6, start by verifying power and replacing U3 and U5.
+
+Both outputs of the dual galvanostat are driven directly by U6, a dual op-amp.
+Each of these has a separate trim pot for the current control, RV1 and RV2.
+After verifying correct behavior with at TP6, use a current meter placed across each output to calibrate the control resistors.
+Again, it is recommended to adjust these trim pots with RV3 set to a large number.
 
 \section{Appendix}
 
 This appendix contains the following:
-\begin{itemize}
+\begin{ditemize}
   \item parts list
   \item circuit schematic
   \item full board
   \item top layer
   \item bottom layer
-\end{itemize}
+\end{ditemize}
 
 \clearpage
 \subsection{Parts}
 
-\begin{table}[h]
-\begin{tabular}{ l | l | l | l | l }
-  name & part & vendor & cost (USD) & comment \\ \hline
-  enclosure & Bud XXX & & XXX & \\
-  power recepticle & & & & \\
-  fuse & & & & \\
-  switch & & & & \\
-  panel-mount pot & & & & \\
-  2x BNC panel mount & & & & \\ \hline
-  power supply & & & & \\
-  standoffs & & & & \\ \hline
-  U1 & LM7905 & UW Stock & 2.00 & TO-220 package \\
-  U2 & TI LM311 & \href{https://www.digikey.com/product-detail/en/texas-instruments/LM311N-NOPB/LM311NNS-NOPB-ND/6175}{Digi-Key} & 1.00 & \\
-  U3 & TI SN74121N & Digi-Key & & \\
-  U4 & TLV4110IP & & & \\
-  U5 & INA105KP & & & \\ \hline
-  R1 & & & \\
-  R2 & & & \\
-  R3 & & & \\ \hline
-  C1, C2, C3 & 10 $\mu$F electrolytic & UW Stock & 0.25 & must be rated over 15 V\\
-  C4 & 10 nF ceramic & UW Stock & 0.25 & \\ \hline
-  J1 & Molex 22-23-2031 & UW Stock & 0.25 & 3 pins, 2.54 mm pitch \\
-  J2, J3, J4 & Molex 22-23-2021 & UW Stock & 0.25 & 2 pins, 2.54 mm pitch \\
-\end{tabular}
-\end{table}
-
 Parts list.
 Costs are approximate.
-Trivial components like screws are not included.
+Trivial components like screws, standoffs, feet are not included.
+
+\begin{tabular}{
+    P{\dimexpr 0.02\linewidth-2\tabcolsep}|
+    p{\dimexpr 0.3\linewidth-2\tabcolsep}|
+    p{\dimexpr 0.37\linewidth-2\tabcolsep}|
+    p{\dimexpr 0.15\linewidth-2\tabcolsep}|
+    P{\dimexpr 0.15\linewidth-2\tabcolsep}}
+  & name & part & vendor & cost (USD) \\ \hline
+  1 & enclosure & CU-3005-A:BUD & UW Stock & 9.00 \\
+  1 & barrel plug, 2.1 mm & 722A:SWITCHCRAFT & UW Stock & 3.00 \\
+  1 & switch &  R1966ABLKBLKEFGRN:E-SWITCH & UW Stock & 2.00 \\
+  1 & black banana & 108-0902-001:CINCH & UW Stock & 0.75 \\
+  1 & red banana & 108-0903-001:CINCH & UW Stock & 0.75 \\ \hline
+  1 & R1 & resistor, 1 k$\Omega$, 1/4 W & UW Stock & 0.00 \\
+  2 & R2, R3 & resistor, 240 $\Omega$, 1/4 W & UW Stock & 0.00 \\
+  2 & RV1, RV2 & 2K-3296:BOURNS & UW Stock & 3.00 \\
+  1 & RV3 & 3683S-1-103L:BOURNS & UW Stock & 10.00 \\
+  1 & RV4 & 100K-3296:BOURNS & UW Stock & 3.00 \\ \hline
+  1 & C1 & capacitor, tantalum, 10 $\mu$F & UW Stock & 0.25 \\
+  1 & C2 & capacitor, tantalum, 330 nF & UW Stock & 0.25 \\
+  1 & C3 & capacitor, tantalum, 100 nF & UW Stock & 0.25 \\
+  2 & C4, C5 & capacitor, electrolytic, 10 $\mu$F & UW Stock & 0.10 \\ \hline
+  4 & J0, J1, J2, RV3 (pins) & 22-23-2021:MOLEX & UW Stock & 0.25 \\
+  4 & J0, J1, J2, RV3 (socket) & 22-01-3027:MOLEX & UW Stock & 0.25 \\ \hline
+  1 & TP1 & 5012:KEYSTONE & UW Stock & 0.50 \\
+  1 & TP2 & 5010:KEYSTONE & UW Stock & 0.50 \\
+  1 & TP5 & 5011:KEYSTONE & UW Stock & 0.50 \\
+  3 & TP3, TP4, TP6 & 5014:KEYSTONE & UW Stock & 0.50 \\ \hline
+  5 & 8 pin DIP socket & 110-93-308-41-001000:MILL-MAX & UW Stock & 1.00 \\
+  1 & U1 & L7815CV:STM & UW Stock & 0.50 \\
+  1 & U4 & LMC7660IN/NOPB:TI & \href{https://www.digikey.com/product-detail/en/texas-instruments/LMC7660IN-NOPB/LMC7660IN-NOPB-ND/32523}{DigiKey} & 1.50 \\
+  1 & U5 & INA105KP:TI & \href{https://www.digikey.com/product-detail/en/texas-instruments/INA105KP/INA105KP-ND/251073}{DigiKey} & 10.00 \\
+  3 & U2, U3, U6 & LM358P:TI & \href{https://www.digikey.com/product-detail/en/texas-instruments/LM358P/296-1395-5-ND/277042}{DigiKey} & 0.50 \\
+\end{tabular}
 
-\includepdf[landscape=true]{../PCB/schematic.pdf}
-\includepdf{../PCB/pcb.pdf}
-\includepdf{../PCB/front.pdf}
-\includepdf{../PCB/back.pdf}
+\includepdf[angle=-90, fitpaper=true]{../PCB/schematic.pdf}
+\includepdf[angle=-90, fitpaper=true]{../PCB/pcb.pdf}
+\includepdf[angle=-90, fitpaper=true]{../PCB/front.pdf}
+\includepdf[angle=-90, fitpaper=true]{../PCB/back.pdf}
 
 \end{document}
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