Merge pull request #12 from mdurvaux/master

Electrical and mechanical design documentation

doc/Daughterboard_schematic/README.md

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+Daughter board schematic
+========================
+
+
+Note
+======
+the schematic has been created using GNU gEDA
+
+
+Bill of material
+================
+Part list
+- 3mm diameter low power LED Green
+- 3mm diameter low power LED Yellow
+- 3mm diameter low power LED Red
+- PCB mounted SPST normally open push-button
+- 26 (or 40) DIL poles pin-header female connector
+- resistors (values are not critical)
+    510 Ohm (3)
+    16  KOhm
+    1.3 KOhm
+
+Mechanical design
+=================
+coordinate (0,0) is located at the PCB corner near the power supply connector.
+the X axis is along the longest side.
+
+hole_x1  =  3.50 ;		// hole center x offset from PCB edge (uSD side)
+LedBtn_y = device_y - hole_y - 2.5 * 2.54 + tolerance ; // Y axis center position of LEDs and button(s)
+R_Led_x  = hole_x1 + 29 + 2.54 + tolerance ;	// X axis center position of red LED
+Y_Led_x  = R_Led_x - 3 * 2.54 ;				    // X axis center position of yellow LED
+G_Led_x  = R_Led_x - 6 * 2.54 ;				    // X axis center position of green LED
+Btn_x	 = R_Led_x + 4.5 * 2.54 ; 			    // X axis center position of button
+
+The LEDs and the push-button are positioned on the 2.54 mm (0.1 inch) grid
+Relative to he GPIO connector pin 1
+along the X axis : -2 * 2.54 mm
+along the Y axis (in multiples of 2.54 mm)
+Green LED center : 4.5
+Yellow LED center : 7.5
+Red LED center : 10.5
+Push-button center : 15.0
+
+The LEDs have a 3 mm diameter
+The top of the LEDs are 11 mm above the PCB
+
+
+
+
+

doc/Daughterboard_schematic/Raspi_IO.sch

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+v 20110115 2
+C 40000 40000 0 0 0 title-A4.sym
+T 44700 40700 9 10 1 0 0 0 1
+RaspberryPi GPIO : LED and switches
+T 44700 40400 9 10 1 0 0 0 1
+Raspi_IO.sch
+T 44800 40100 9 10 1 0 0 0 1
+1
+T 46300 40100 9 10 1 0 0 0 1
+1
+T 48500 40400 9 10 1 0 0 0 1
+1.1 - 05/02/2015
+T 48600 40100 9 10 1 0 0 0 1
+Marc Durvaux
+C 41000 47200 1 270 0 header26-1.sym
+{
+T 46400 46600 5 10 0 1 270 0 1
+refdes=J?
+T 45700 45600 5 10 0 0 270 0 1
+device=HEADER26
+}
+C 47500 42000 1 90 0 switch-pushbutton-no-1.sym
+{
+T 47200 42400 5 10 0 1 90 0 1
+refdes=S?
+T 46900 42400 5 10 0 0 90 0 1
+device=SWITCH_PUSHBUTTON_NO
+}
+C 44300 42900 1 270 0 led-1.sym
+{
+T 44900 42100 5 10 0 0 270 0 1
+device=LED
+T 44700 42100 5 10 0 1 270 0 1
+refdes=LED?
+T 45100 42100 5 10 0 0 270 0 1
+symversion=0.1
+T 44000 42600 5 10 1 1 0 0 1
+value=Red
+}
+C 41600 43200 1 90 0 resistor-2.sym
+{
+T 41250 43600 5 10 0 0 90 0 1
+device=RESISTOR
+T 41300 43400 5 10 0 1 90 0 1
+refdes=R?
+T 41300 43700 5 10 1 1 180 0 1
+value=510R
+}
+C 42800 42900 1 270 0 led-1.sym
+{
+T 43400 42100 5 10 0 0 270 0 1
+device=LED
+T 43200 42100 5 10 0 1 270 0 1
+refdes=LED?
+T 43600 42100 5 10 0 0 270 0 1
+symversion=0.1
+T 42300 42600 5 10 1 1 0 0 1
+value=Yellow
+}
+C 41300 42900 1 270 0 led-1.sym
+{
+T 41900 42100 5 10 0 0 270 0 1
+device=LED
+T 41700 42100 5 10 0 1 270 0 1
+refdes=LED?
+T 42100 42100 5 10 0 0 270 0 1
+symversion=0.1
+T 40800 42600 5 10 1 1 0 0 1
+value=Green
+}
+C 43100 43200 1 90 0 resistor-2.sym
+{
+T 42750 43600 5 10 0 0 90 0 1
+device=RESISTOR
+T 42800 43400 5 10 0 1 90 0 1
+refdes=R?
+T 42800 43700 5 10 1 1 180 0 1
+value=510R
+}
+C 44600 43200 1 90 0 resistor-2.sym
+{
+T 44250 43600 5 10 0 0 90 0 1
+device=RESISTOR
+T 44300 43400 5 10 0 1 90 0 1
+refdes=R?
+T 44300 43700 5 10 1 1 180 0 1
+value=510R
+}
+C 47600 43500 1 90 0 resistor-2.sym
+{
+T 47250 43900 5 10 0 0 90 0 1
+device=RESISTOR
+T 47300 43700 5 10 0 1 90 0 1
+refdes=R?
+T 47300 44000 5 10 1 1 180 0 1
+value=16K
+}
+C 48700 43400 1 180 0 resistor-2.sym
+{
+T 48300 43050 5 10 0 0 180 0 1
+device=RESISTOR
+T 48500 43100 5 10 0 1 180 0 1
+refdes=R?
+T 48100 43500 5 10 1 1 0 0 1
+value=1K3
+}
+N 41500 43200 41500 42900 4
+N 43000 43200 43000 42900 4
+N 44500 43200 44500 42900 4
+N 47500 43500 47500 43000 4
+N 47800 43300 47500 43300 4
+N 41500 42000 41500 41700 4
+N 41500 41700 47500 41700 4
+N 43000 41700 43000 42000 4
+N 47500 42000 47500 41700 4
+N 44500 42000 44500 41700 4
+N 47500 44400 47500 45000 4
+N 44500 45000 47500 45000 4
+N 43300 45000 41500 45000 4
+N 41500 45000 41500 44100 4
+N 43300 47200 43300 47500 4
+N 43300 47500 40500 47500 4
+N 40500 47500 40500 44600 4
+N 43000 44100 43000 44600 4
+N 43000 44600 40500 44600 4
+T 47100 45100 9 10 1 0 0 0 1
+3.3V
+T 45500 41800 9 10 1 0 0 0 1
+GND
+N 44100 45800 44100 44600 4
+N 44100 44600 44500 44600 4
+N 44500 44600 44500 44100 4
+N 49000 47500 49000 43300 4
+N 49000 43300 48700 43300 4
+N 44100 47500 49000 47500 4
+N 44100 47200 44100 47500 4
+N 46100 45800 46100 41700 4
+N 44500 45800 44500 45000 4
+N 43300 45000 43300 45800 4

doc/Mechanical_design/README.md

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+Case mechanical design
+======================
+
+
+Notes
+=====
+- the mechanical design has been created using OpenSCAD
+- the Raspberry Pi B Plus Mechanical Drawing is included for reference
+
+
+Design files
+============
+The main design file is "myRaspiBp.scad". It is self-documented.
+Through parametric configuration, one can generate either the bottom part or the top part
+of the case, or both parts. A fit test can also be performed.
+
+Use the file "myRaspBp_Button.scad" to create the push-button.
+
+The design file include "shapes.scad" for common composite shape modules.
+
+
+Manufacturing files
+===================
+STL files can be used directly for 3D printing.
+The following files are available :
+    myRaspiBp_bottom.stl for the bottom part
+    myRaspiBp_top.stl for the top part
+    myRaspiBp_Button.stl for the push-button.
+
+
+
+
+
+
+