motormount tightener

doc/Hardware Considerations.md

@@ -40,6 +40,13 @@ Board price single piece | $4 | $5 | $4 | $3
 
 ![](img/boards.jpeg)
 
+Other boards:
+|Board|MCU|Specs|IO|Size|Weight|
+|-|-|-|-|-|-| 
+Waveshare RP2040-Zero | RP2040 | 2MB flash, RESET+BOOT button, RGB LED | 20 io + 9 via solder points | 23 * 17 mm | 1.7 gr
+WeMos LOLIN32-Lite | ESP32 | 4MB flash, 0MB PSRAM, RESET button, lipo charger, LED | 23 io | 50 * 25 mm | 4.7 gr
+WeMos LOLIN S3 Mini | ESP32-S3 | 4MB flash, 2MB PSRAM, RESET+BOOT button, LED | 27 io | 34 * 25 mm | 3 gr
+
 ### ESP32
 ![](img/ESP32-DEV-KIT-DevKitC-v4-pinout-mischianti.png)
 ![](img/ESP32-DOIT-DEV-KIT-v1-pinout-mischianti.png)

tools/OpenSCAD - Drone Frame Parts/MotorMount16x9mm.scad

@@ -8,6 +8,7 @@ beam1_dia = 6.5; //diameter
 beam1_depth = 3*beam1_dia; //socket depth
 beam1_start = 13; //socket starting point from center of motor
 beam1_square = 0; //beam type: 0=round, 1=square
+beam1_tightener = 2; //add screw tightener: 0=none(i.e. use glue) 1=horizonal 2=vertical
 
 //outer square beam
 beam2_dia = 3.5; //diameter (0 to ignore)
@@ -52,8 +53,16 @@ beam2_od = beam2_dia+2*beam_wall;
 beam3_od = beam3_dia+2*beam_wall;
 beam4_od = beam4_dia+2*beam_wall;
 
-difference()
-{
+difference() {
+ union() {
+ MotorMount_add();
+ beam1_tigthener_add();
+ }
+ MotorMount_drill();
+ beam1_tigthener_drill();
+}
+
+module MotorMount_add() {
  union() //this union doesn't do anything, just here to make debugging easy
  hull() //comment out hull() for debugging
  {
@@ -62,7 +71,7 @@ difference()
  //sockets for beams
  translate([0,0,beam1_od/2]) rotate([90,0,0]) translate([0,0,beam1_start]) {
  if(beam1_square)
-  translate([-beam1_od/2,-beam1_od/2,0]) cube([beam1_od,beam1_od,20]);
+ translate([-beam1_od/2,-beam1_od/2,0]) cube([beam1_od,beam1_od,20]);
  else 
  cylinder(h=beam1_depth,d=beam1_od);
  }
@@ -74,10 +83,11 @@ difference()
  translate([0,0,beam1_od+beam3_od/2-2*beam_wall]) rotate([78,0,0]) translate([0,0,beam3_start]) cylinder(h=beam3_depth,d=beam3_od);
  if(beam4_dia>0) {
  translate([(beam1_dia+beam4_dia)/2,-beam4_start,0]) rotate([0,0,0]) translate([0,0,beam4_start_z]) cylinder(h=beam4_depth,d=beam4_od);
- translate([-(beam1_dia+beam4_dia)/2,-beam4_start,0]) rotate([0,0,0]) translate([0,0,beam4_start_z]) cylinder(h=beam4_depth,d=beam4_od); 
+ translate([-(beam1_dia+beam4_dia)/2,-beam4_start,0]) rotate([0,0,0]) translate([0,0,beam4_start_z]) cylinder(h=beam4_depth,d=beam4_od);
  }
  }
-
+}
+module MotorMount_drill() {
  //drill holes for beams
  translate([0,0,beam1_od/2]) rotate([90,0,0]) translate([0,0,beam1_start]) {
  if(beam1_square)
@@ -116,3 +126,49 @@ module DrillMotorScrew() {
  translate([0,0,+10]) cylinder(h=999,d=motor_dr1,center=true);
  translate([0,0,-50-motor_h]) cylinder(h=100,d=motor_dr2,center=true);
 }
+
+module nutholeM3() {
+ cylinder(r= 6.4/2, h=100, $fn=6, center=[0,0]);
+ translate([0,0,-99]) cylinder(r= 3.3/2, h=100, center=[0,0]);
+}
+
+//beam1 tigthener
+module beam1_tigthener_add() {
+ if(beam1_tightener==1) {
+ w = beam1_dia + 10;
+ d = 8;
+ h = 8;
+ translate([-w/2,-beam1_start-beam1_depth,-h/2+beam1_od/2]) cube([w, d, h]);
+ }
+ if(beam1_tightener==2) {
+ w = 10;
+ d = 8;
+ h1 = 6;
+ h = beam1_dia/2+h1;
+ translate([-w/2, -beam1_start-beam1_depth, +beam1_od/2]) cube([w, d, h]);
+ }
+}
+module beam1_tigthener_drill() {
+ if(beam1_tightener==1) {
+ w = beam1_dia + 10;
+ d = 8;
+ h = 8;
+ translate([+beam1_dia/2+2,-beam1_start-beam1_depth+d/2,-h/2+beam1_od/2+h-1.5]) rotate([0,0,90]) nutholeM3();
+ translate([-beam1_dia/2-2,-beam1_start-beam1_depth+d/2,-h/2+beam1_od/2+h-1.5]) rotate([0,0,90]) nutholeM3();
+ //gap
+ h2 = 1.5; //gap width
+ d2 = beam1_depth/2;
+ translate([-50,-beam1_start-beam1_depth-0.01,-h2/2+beam1_od/2]) cube([100, d2, h2]);
+ }
+ if(beam1_tightener==2) {
+ w = 10;
+ d = 8;
+ h1 = 6;
+ translate([w/2-1.5, -beam1_start-beam1_depth+d/2, +beam1_od/2+beam1_dia/2+h1/2]) rotate([90,0,90]) nutholeM3();
+ //gap
+ w2 = 1.5; //gap width
+ d2 = beam1_depth/2;
+ h2 = beam1_dia/2;
+ translate([-w2/2,-beam1_start-beam1_depth-0.01,-h2/2+beam1_od/2]) cube([w2, d2, 100]);
+ }
+}