Support for Arduino Nano, different mounting hole radius and male headers

Author: KjellMorgenstern

arduino.scad

@@ -30,7 +30,7 @@ module arduino(boardType = UNO) {
     color("SteelBlue") 
       boardShape( boardType );
     translate([0,0,-pcbHeight * 0.5]) holePlacement(boardType = boardType)
-      color("SteelBlue") cylinder(r = mountingHoleRadius, h = pcbHeight * 2, $fn=32);
+      color("SteelBlue") cylinder(r = mountingHoleRadius[boardType], h = pcbHeight * 2, $fn=32);
   }
   //Add all components to board
   components( boardType = boardType, component = ALL );
@@ -60,7 +60,7 @@ module bumper( boardType = UNO, mountingHoles = false ) {
 
       //Board mounting holes
       holePlacement(boardType=boardType)
-        cylinder(r = mountingHoleRadius + 1.5, h = bumperBaseHeight, $fn = 32);
+        cylinder(r = mountingHoleRadius[boardType] + 1.5, h = bumperBaseHeight, $fn = 32);
 
       //Bumper mounting holes (exterior)
       if( mountingHoles ) {
@@ -88,10 +88,26 @@ module bumper( boardType = UNO, mountingHoles = false ) {
     }
     translate([0,0,-0.5])
     holePlacement(boardType=boardType)
-      cylinder(r = mountingHoleRadius, h = bumperHeight, $fn = 32);  
+      cylinder(r = mountingHoleRadius[boardType], h = bumperHeight, $fn = 32);
     translate([0, 0, bumperBaseHeight]) {
-      components(boardType = boardType, component = ALL, offset = 1);
+      components(boardType = boardType, component = USB, offset = 1);
     }
+    translate([0, 0, bumperBaseHeight]) {
+      components(boardType = boardType, component = POWER, offset = 1);
+    }
+    translate([0, 0, bumperBaseHeight]) {
+      components(boardType = boardType, component = RJ45, offset = 1);
+    }
+
+    // TODO : Boards are usually not flat on the downside, and pins
+    // currently colide with the structure (resulting in a ~1mm gap)
+    translate([0, 0, bumperBaseHeight]) {
+      components(boardType = boardType, component = HEADER_M, offset = 0);
+    }
+    translate([0, 0, bumperBaseHeight]) {
+      components(boardType = boardType, component = HEADER_F, offset = 0);
+    }
+    // Cooling opening?
     translate([4,(dimensions[1] - dimensions[1] * 0.4)/2,-1])
       cube([dimensions[0] -8,dimensions[1] * 0.4,bumperBaseHeight + 2]);
   }
@@ -239,13 +255,14 @@ PIN = 1;
 
 module standoffs( 
   boardType = UNO, 
-  height = 10, 
-  topRadius = mountingHoleRadius + 1, 
-  bottomRadius =  mountingHoleRadius + 2, 
-  holeRadius = mountingHoleRadius,
+  height = 10,
   mountType = TAPHOLE
   ) {
 
+  topRadius = mountingHoleRadius[boardType] + 1;
+  bottomRadius =  mountingHoleRadius[boardType] + 2;
+  holeRadius = mountingHoleRadius[boardType];
+
   holePlacement(boardType = boardType)
     union() {
       difference() {
@@ -283,6 +300,16 @@ USB = 2;
 POWER = 3;
 RJ45 = 4;
 
+module header(dimensions, female ) {
+  z = female?dimensions[2]:2.54;
+  color("black") cube( [dimensions[0],dimensions[1],z] );
+  for (m = [0:dimensions[0]/2.54 -1]) {
+    for (n = [0:dimensions[1]/2.54 -1]) {
+      translate([0.95 + m*2.54, 0.95 + n*2.54, -2.51]) color("yellow") cube([0.64, 0.64,dimensions[2] + 2.5] );
+    }
+  }
+}
+
 module components( boardType = UNO, component = ALL, extension = 0, offset = 0 ) {
   translate([0, 0, pcbHeight]) {
     for( i = [0:len(components[boardType]) - 1] ){
@@ -297,8 +324,16 @@ module components( boardType = UNO, component = ALL, extension = 0, offset = 0 )
             + ((components[boardType][i][2] * [1,1,1]) 
               * components[boardType][i][2]) * extension
             + ([1,1,1] - components[boardType][i][2]) * offset * 2;        
-          translate( position ) color( components[boardType][i][4] ) 
-            cube( dimensions );
+          translate( position )
+            if(components[boardType][i][3] == HEADER_M) {
+              header(dimensions, female = false);
+            } else {
+              if(components[boardType][i][3] == HEADER_F) {
+                header(dimensions, true);
+              } else {
+                color( components[boardType][i][4] ) cube( dimensions );
+              }
+            }
       }
     }  
   }
@@ -412,12 +447,12 @@ YUN = 8;
 INTELGALILEO = 9;
 TRE = 10;
 ETHERNET = 11;
+NANO = 12;
 
 /********************************** MEASUREMENTS **********************************/
 pcbHeight = 1.7;
 headerWidth = 2.54;
 headerHeight = 9;
-mountingHoleRadius = 3.2 / 2;
 
 ngWidth = 53.34;
 leonardoDepth = 68.58 + 1.1;           //PCB depth plus offset of USB jack (1.1)
@@ -462,6 +497,14 @@ megaHoles = [
   [  50.8, 96.52 ]
   ];
 
+// Original nano holes
+nanoHoles = [
+  [  1.27, 1.27 ],
+  [  1.27, 41.91 ],
+  [  16.51, 41.91 ],
+  [  16.51, 1.27 ]
+  ];
+
 boardHoles = [ 
   ngHoles,        //NG
   ngHoles,        //Diecimila
@@ -474,7 +517,24 @@ boardHoles = [
   0,              //Yun
   0,              //Intel Galileo
   0,              //Tre
-  unoHoles        //Ethernet
+  unoHoles,       //Ethernet
+  nanoHoles       //Nano
+  ];
+
+mountingHoleRadius = [
+  1.6,        //NG
+  1.6,        //Diecimila
+  1.6,        //Duemilanove
+  1.6,        //Uno
+  1.6,        //Leonardo
+  1.6,        //Mega
+  1.6,        //Mega 2560
+  1.6,        //Due
+  1.6,        //Yun
+  1.6,        //Intel Galileo
+  1.6,        //Tre
+  1.6,        //Ethernet
+  0.92        //Nano
   ];
 
 /********************************** BOARD SHAPES **********************************/
@@ -502,6 +562,13 @@ megaBoardShape = [
   [  0.0, 96.52 ]
   ];
 
+ nanoBoardShape = [
+  [  0.0, 0.0 ],
+  [  17.78, 0.0 ],
+  [  17.78, 43.18 ],
+  [  0.0, 43.18]
+  ];
+
 boardShapes = [   
   ngBoardShape,   //NG
   ngBoardShape,   //Diecimila
@@ -514,7 +581,8 @@ boardShapes = [
   0,              //Yun
   0,              //Intel Galileo
   0,              //Tre
-  ngBoardShape    //Ethernet
+  ngBoardShape,   //Ethernet
+  nanoBoardShape  //Nano
   ];  
 
 /*********************************** COMPONENTS ***********************************/
@@ -584,7 +652,13 @@ dueComponents = [
   [[27.365, -1.1, 0], [7.5, 5.9, 3], [0, -1, 0], USB, "LightGray" ],
   [[40.7, -1.8, 0], [9.0, 13.2, 10.9], [0, -1, 0], POWER, "Black" ]
   ];
-  
+
+nanoComponents = [
+  [[0, 2.54, 0], [headerWidth, headerWidth * 15, headerHeight], [0, 0, 1], HEADER_M, "Black"],
+  [[15.24, 2.54, 0], [headerWidth, headerWidth * 15, headerHeight], [0, 0, 1], HEADER_M, "Black"],
+  [[4.9, -1.1, 0], [8, 9, 3], [0, -1, 0], USB, "LightGray" ],
+  ];
+
 components = [
   ngComponents,         //NG
   ngComponents,         //Diecimila
@@ -597,7 +671,8 @@ components = [
   0,                    //Yun
   0,                    //Intel Galileo
   0,                    //Tre
-  etherComponents       //Ethernet
+  etherComponents,      //Ethernet
+  nanoComponents
   ];
 
 /****************************** NON-BOARD PARAMETERS ******************************/

examples.scad

@@ -31,3 +31,15 @@ translate([0, 0, -75]) {
 translate([0, 0, 75]) {
 	enclosureLid();
 }
+
+translate([-140,0,0]) {
+  translate([0,0,2.2]) arduino(NANO);
+  translate([0,100, 0]) bumper(NANO, mountingHoles = true);
+  translate([0,0,-75]) enclosure(NANO);
+  translate([0,0,75]) enclosureLid(NANO);
+
+  translate([0,100,-75]) {
+    standoffs(NANO, mountType=PIN);
+	boardShape(NANO, offset = 3);
+  }
+}