Differences

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--- 3dprint:strobo-tumbling-cubes [2026/01/08 18:29] – [Code] ivo
+++ 3dprint:strobo-tumbling-cubes [2026/01/09 07:13] (current) – [Code] ivo
@@ Line 4: / Line 4: @@
-A hall sensor measures the passing of four magnets to compute the angle.
+A hall sensor (outputting just high or low) measures the passing of four magnets to compute the angle.
 ===== Files =====
 ==== 3D ====
-    * {{ :3dprint:strobo-tumbling-cubes.scad|}}
+    * {{ :3dprint:strobo-tumbling-cubes.scad|}} (OpenSCAD)
-    * {{ :3dprint:motorbracket.fcstd |}}
+    * {{ :3dprint:motorbracket.fcstd |}}  (FreeCAD)
-    * {{ :3dprint:pinwheel.fcstd |}}
+    * {{ :3dprint:pinwheel.fcstd |}} (FreeCAD)
-    * {{ :3dprint:sensorbracket.fcstd |}}
+    * {{ :3dprint:sensorbracket.fcstd |}} (FreeCAD)
+    * {{ :3dprint:case.svg?linkonly |}} (Inkscape)
 ==== Code ====
+Used an ESP32 (Doit DevBoard), with Platformio
 <code cpp main.cpp>
 #include <Arduino.h>
@@ Line 56: / Line 58: @@
         double dt = ts[tsi]-ts[(tsi+3)&3];
         dts[tsi] = 0.8*dts[tsi]+0.2*dt;
-        double sum = 0.0;
+        unsigned int w = dts[(tsi+1)&3]*(nextAngle-angle)/step;
-        for (int i=0; i<4; i++) {
-          sum += dts[tsi];
-        }
-        //double realStep = dts[(tsi+1)&3];
-        unsigned int w = dts[(tsi+1)&3]*(nextAngle-angle)/step; // dt*(nextAngle-angle)/step*(realStep/step);
         if (w<200000) {
           delayMicroseconds(w);
@@ Line 81: / Line 78: @@
 ==== Circuit ====
+Circuit for driving the 12V LED strip. Not very efficient and inverted logic, so it light up until the microcontroller has booted. But you do with what you have lying around...
+{{ :3dprint:circuit.svg |}}