Electronic Vernier Caliper Teardown @electronupdate

Uploaded May 2024 | Updated September 2026, 3 weeks ago

Teardown of a caliper to the silicon level. Super clever engineering to achieve amazing precision.

Photos of the die at: electronupdate.blogspot.com/2024/05/electronic-vernier-caliper-teardown-to.html

How to use a caliper with Ardunio: sites.google.com/site/marthalprojects/home/arduino/arduino-reads-digital-caliper

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$3D PRINT: DESIGN FOR 1st COPY SUCCESS Design log video describing my approach to getting a functional print to work the 1st time. 3D printers are excellent for producing functional parts for the various project around my home.... however, care needs to be taken to ensure the 1st print is useable! Rain gauge mount. OpenSCAD code here:: https://electronupdate.blogspot.com/2025/09/3d-print-design-for-1st-copy-success.html and here: // rain gauge mount. // Sept 2025 $fn = 360; module m4_captive_nut( length ) //m4 nut holder and hole for bolt { union() { cylinder ($fn = 6, d = 8.5, h = 3); cylinder ($fn = 60, d = 4.5, h = length); } } module bracket() // this slips over the metal post { difference() { cube([13,46,125]); union() { translate ([3,3,0]) cube([7,40,122]); translate([ 0, 46/2, 105] ) rotate([0,90,0]) cylinder(d = 4.1, h =13 ); } } } module round_top () // this is the round top the gauge sits on difference() { // ring cylinder( d = 116, h =10); union() // mounting holes with hex nut { rotate( 0) translate([42.5/cos(30), 0 ,0] ) m4_captive_nut(10); // m4 bolt hole rotate( 120) translate([42.5/cos(30), 0 ,0] ) m4_captive_nut(10); rotate( 240) translate([42.5/cos(30), 0 ,0] ) m4_captive_nut(10); } } module assembly_1() // post bracket + round top { bracket(); translate([116/2+13/2,46/2,115]) round_top(); } module strut() { translate([100+13,46/2+10/2,20]) rotate([90,270,0]) linear_extrude(10) polygon([ [0,100],[100,0], [100,20], [20,100]]); } // add in strut union() { assembly_1(); strut(); }$

$Amazon Blink Trail Camera Adapter 3D Print A functional print to convert a Blink camera into a handy trail camera to capture all of the wildlife in ones back yard.... Model may be found here: https://www.thingiverse.com/thing:7170452 code here: HOOD $fn=60; module hood() { difference() { difference() { hull() { cube([80,85,80], center = true); translate([0,90/2,0]) cylinder(d = 10, h = 80, center = true); translate([-80/2+5,85/2,0]) cylinder(d = 10, h = 80, center=true); translate([+80/2-5,85/2,0]) cylinder(d = 10, h = 80, center=true); } translate([0,0,1]) hull() { translate([0,5,0]) cube([76,81,78], center = true); translate([0,90/2-2,0]) cylinder(d = 10, h = 78,center = true); translate([-76/2+5,81/2,0]) cylinder(d = 10, h = 78, center=true); translate([+76/2-5,81/2,0]) cylinder(d = 10, h = 78, center=true); } } union() { points=[[ -45,0], [-45,75], [10,28], [10,0] ]; translate([-40,-45,0]) rotate([0,90,0]) linear_extrude(height = 80) polygon(points); // mount holes for camera translate([-33/2,4,-40]) cylinder(h = 2, d =3.5); translate([+33/2,4,-40]) cylinder(h = 2, d =3.5); // cutout for 1/4-20 nut translate([0,-39.5+5,-25]) rotate([90,0,0]) cylinder( d = 0.510 * 25.4, h = 5, $fn=6); translate([0,-39.5+5,-25]) rotate([90,0,0]) cylinder( d = 0.25 * 25.4+0.5, h = 9); } } } hood(); TRIPOD // turn a blink camera into a trail camera // stand // Oct 2025 $fn = 360; // Four leg stand to lift camera off ground by 100 mm module stand() { hull() { translate([0,0,100]) cube( [30,80,5], center = true); translate([80,0,0]) cylinder(d = 20, center = true); } hull() { translate([0,-10,100]) cylinder(d = 30, center = true); translate([ cos(-120)*80, sin(-120)*80,0]) cylinder(d = 20, center = true); } hull() { translate([0,10,100]) cylinder(d = 30, center = true); translate([cos(120)*80, sin(120)*80,0]) cylinder(d = 20, center = true); } } // assembly (generate stand, punch hole for 1/4-20 bolt) difference() { union() { stand(); } cylinder(h = 400,d = 0.25 *25.4 + 0.5); // hole for bolt cylinder(h = 100-16+5,d = 22); // carve out place for bolt head }$