small docu notes

2020-08_psu-breakout/eagle.epf

@@ -16,16 +16,16 @@ UsedLibrary="C:/Dropbox/CBA/circuits/eagle/parts/supply1.lbr"
 UsedLibrary="C:/Dropbox/CBA/circuits/eagle/parts/SparkFun-Eagle-Libraries/SparkFun-Connectors.lbr"
 
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+Type="Schematic Editor"
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+File="2020-08_psu-breakout.sch"
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-PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6 0.45"
+PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6"
 ViaDiameters=" 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.05 1.1 1.15 1.2 1.3 0"
-ViaDrills=" 0.2 0.25 0.4 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.3 0.35 0.45"
-HoleDrills=" 0.2 0.25 0.3 0.4 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35 0.45"
+ViaDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
+HoleDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
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@@ -35,14 +35,14 @@ DimensionExtWidths=" 0.127 0.254 0.1 0.13 0.26 0"
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-WireBend=1
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+WireBend=4
+WireBendSet=31
 WireCap=1
 MiterStyle=1
 PadShape=0
 ViaShape=1
 PolygonPour=0
-PolygonRank=2
+PolygonRank=0
 PolygonThermals=1
 PolygonOrphans=0
 TextRatio=8
@@ -57,19 +57,21 @@ SwapLevel=0
 ArcDirection=0
 AddLevel=2
 PadsSameType=0
-Layer=47
+Layer=91
+Views=" 1: -45.293 31.146 556.518 211.07"
+Sheet="1"
 
 [Win_2]
-Type="Schematic Editor"
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-File="2020-08_psu-breakout.sch"
-View="131.141 143.727 421.366 230.496"
-WireWidths=" 0.0762 0.1016 0.127 0.15 0.2 0.2032 0.254 0.3048 0.4064 0.508 0.6096 0.8128 1.016 1.27 2.54 0.1524"
+Type="Board Editor"
+Number=2
+File="2020-08_psu-breakout.brd"
+View="12.384 -7.24152 122.016 84.5385"
+WireWidths=" 0.1016 0.15 0.2 2.54 0 0.508 0.2032 0.254 0.3048 0.4064 0.1524 1.016 1.27 0.127 0.6096 0.8128"
 PadDiameters=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.27 1.4224 1.6764 1.778 1.9304 2.1844 2.54 3.81 6.4516 0"
-PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6"
+PadDrills=" 0.2 0.25 0.3 0.35 0.4 0.5 0.55 0.65 0.7 0.75 0.8 0.85 0.9 1 0.6 0.45"
 ViaDiameters=" 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 0.95 1 1.05 1.1 1.15 1.2 1.3 0"
-ViaDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
-HoleDrills=" 0.2 0.25 0.3 0.4 0.45 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35"
+ViaDrills=" 0.2 0.25 0.4 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.3 0.35 0.45"
+HoleDrills=" 0.2 0.25 0.3 0.4 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 1 0.35 0.45"
 TextSizes=" 0.254 0.3048 0.4064 0.6096 0.8128 1.016 1.27 1.4224 1.6764 1.9304 2.1844 2.54 3.81 5.08 6.4516 1.778"
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@@ -79,14 +81,14 @@ DimensionExtWidths=" 0.127 0.254 0.1 0.13 0.26 0"
 DimensionExtLengths=" 1.27 2.54 1 2 3 0"
 DimensionExtOffsets=" 1.27 2.54 1 2 3 0"
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-WireBend=4
-WireBendSet=31
+WireBend=1
+WireBendSet=0
 WireCap=1
 MiterStyle=1
 PadShape=0
 ViaShape=1
 PolygonPour=0
-PolygonRank=0
+PolygonRank=2
 PolygonThermals=1
 PolygonOrphans=0
 TextRatio=8
@@ -101,9 +103,7 @@ SwapLevel=0
 ArcDirection=0
 AddLevel=2
 PadsSameType=0
-Layer=91
-Views=" 1: 131.141 143.727 421.366 230.496"
-Sheet="1"
+Layer=47
 
 [Win_3]
 Type="Control Panel"

README.md

 ## PSU Baseboard / Bus Head
 
-This is a circuit & mount for a small desktop DC PSU and embedded system bus-head. Documentation is sparse. 
+This is a circuit & mount for a small power supply and embedded system bus-head for the [uart-clocked bus](https://gitlab.cba.mit.edu/jakeread/ucbus-notes). 
 
-![routed](log/2020-08-03_routed.png)
-![schem](log/2020-08-03_schematic.png)
-
-## TODO
-
-- add CAD for PSU mount here,
-- add image
-- revision circuit for:
-    - solder jumpers default shut for 5v usb-to-bus 
-    - clear LED indication of 24v presence, 5v presence on bus 
+![routed](log/2021-08-26_routed.png)
+![schem](log/2021-08-26_schematic.png)
 
 ### What's Up:
 
@@ -24,13 +16,6 @@ This is a circuit & mount for a small desktop DC PSU and embedded system bus-hea
     - I2C Display Module footprint available 
     - BFCs & Filtering available 
 
-### BOM
-
-Coming... 
+### Firmware 
 
-| Part | PN | 
-| --- | --- |
-| 15x2 IDC Plug | 609-5106-ND | 
-| 15x2 IDC Socket | 609-3475-ND |
-| 30 Position Ribbon Cable | 3M157924-50-ND | 
-| Spade | WM19646-ND | 
\ No newline at end of file
+I use this board mostly as the 'coordinator' for modular motion systems, firmware is [here](firmware) and uses platform.io to run, see [this guide](https://mtm.cba.mit.edu/2021/2021-10_microcontroller-primer/fab-platformio/) to build and load code. 
\ No newline at end of file