DEC PDP 11/24 CPU CARD TEARDOWN @electronupdate

Uploaded March 2018 | Updated September 2026, 3 weeks ago

A look at a mini computer component from the late 1970's. This CPU card was being offered at about the same time as the 68000 and 8086 16 bit microprocessors were showing up to market.

DEC was moving to too slow and the cost structure of this module would soon be very un- competitive: a look at the construction quickly shows why.

However! A good example of CPU card design of that era. This is DEC part number M7133 and it has a LSI CPU chip set known as the FONZ-11.

$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 $fn = 360; // Four leg stand to lift camera off ground by 100 mm module stand() { hull() { translate([0,0,100]) cube( [30,80,5], center = true); translate([80,0,0]) cylinder(d = 20, center = true); } hull() { translate([0,-10,100]) cylinder(d = 30, center = true); translate([ cos(-120)*80, sin(-120)*80,0]) cylinder(d = 20, center = true); } hull() { translate([0,10,100]) cylinder(d = 30, center = true); translate([cos(120)*80, sin(120)*80,0]) cylinder(d = 20, center = true); } } // assembly (generate stand, punch hole for 1/4-20 bolt) difference() { union() { stand(); } cylinder(h = 400,d = 0.25 *25.4 + 0.5); // hole for bolt cylinder(h = 100-16+5,d = 22); // carve out place for bolt head }$

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