Differences

This shows you the differences between two versions of the page.

--- xnorit:public:summary:ledlightsceiling [2024/10/10 20:06] – [3D printing] timdv91
+++ xnorit:public:summary:ledlightsceiling [2024/10/13 15:09] (current) – [PCB design] timdv91
@@ Line 10: / Line 10: @@
   - The camera strobing effect from the LED-drivers, is **not** visible to the human eye!
   - This video was deliberately captured vertically!
+  - Yes, the white cabinet with strange LED lights inside contains the server hosting this webpage.
 </WRAP>
 ===== Preparation =====
 ==== Cabling ====
-A cat6 communication cable cable was installed across the ceiling, prior of finalizing the room. As has been makred, in the image below.
+A cat6 communication cable was installed across the ceiling, prior of finalizing the room. As has been marked, in the left image below. In the right image, the cable can be seen.
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241009-235920.png?400|}}
+{{:xnorit:public:summary:inwalltouchscreen:ksnip_20241010-222722.png?400|}}
 ==== Power supply ====
@@ Line 46: / Line 48: @@
 </WRAP>
-In addition I designed a smaller white LED circuitboard, with an FPC connection. Each LED driver can connect up to 8 of these, but only 4 in series due to current limitations of the FPC cables.
+I additionally designed a smaller white LED circuitboard, with two FPC connections. Each LED driver can connect up to 8 of these, but only 4 in series due to current limitations of the FPC cables. This doesn't form any problem, as our LED driver PCB is positioned in the middle. This gives us access to connect 2x4x4 LED PCB's, or 32 LED PCB's in total. Each white PCB contains 6 cold white and 6 warm white LED's.
 {{ :xnorit:public:summary:ledlightceiling:ksnip_20241010-215220.png?600 |}}
@@ Line 56: / Line 59: @@
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241010-210317.png?400|}}
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241010-210328.png?800|}}
-<WRAP center round todo 60%>
-Everything below is still under construction! Sorry about this inconvenience!
-</WRAP>
 ===== Construction =====
 ==== Used materials ====
-I had some leftover wooden boards, due to recently renovating a room. In order to reduce waste, I decided to reuse them as base-material for my ceiling lights.
+I had some leftover wooden boards, due to recently renovating a room. In order to reduce waste, I decided to reuse them as base-material for my ceiling lights. I tried building the light without 3D printing any parts, but changed my mind afterwards as the final result wasn't very neat.
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241010-204934.png?400|}}
@@ Line 72: / Line 70: @@
 ==== 3D printing ====
+=== LED lights ===
 Two different types of structural clips where 3D printed to keep the wooden planks neatly in place. The left image shows the structural clip on the outside of the ceiling light, the right image show the center clip. Collarfabb woodfill PLA was chosen for this print.
@@ Line 78: / Line 77: @@
 {{ :xnorit:public:summary:ledlightceiling:ksnip_20241010-213304.png?600 |}}
+Every white PCB was meant to be screwed onto the structure, using 2 screws each. This many screws seemed a waste of time, as each light holds 32 of these white PCB's. I therefore went with the alternative of printing clips, that hold the LED circuitboards in-place on the structure. The LED's used are high-efficiency medium-power, so the temperature doesn't surpass beyond 45°C on max intensity. Which doesn't result in any danger of melting the PLA clips.
-Each light holds 32 white LED pcb's, which require two crews each. This many screws wastes a ton of time, as an alternative clips where created to hold the LED circuitboards in-place on the structure. It are high-efficiency LED lights, so their temperature doesn't surpass beyond 45-50°C on max intensity. A center holder was also 3D printed to keep the control circuitboard in place, the LED drivers can become hot so a little air-gap was foreseen to avoid melting the plastic.
+I also programmed the LED-driver pcb's firmware, so that the actual maximum configurable intensity is around 70% of the rated LED current. LED's their efficiency and durability lower drastically above 70%, as more heat is generated. Heat is mostly the reason why commercial LED's tend to die way faster than they're rated for. So I hope these lights last many many years.
+A center holder was also 3D printed to keep the control circuitboard in place, the LED drivers can become hot so a little air-gap was foreseen to avoid melting the plastic.
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241010-212441.png?360|}}
 {{:xnorit:public:summary:ledlightceiling:ksnip_20241010-212350.png?400|}}
 {{ :xnorit:public:summary:ledlightceiling:ksnip_20241010-214811.png?400 |}}
 ===== Installation =====
-The installation was rather easy, using nearly invisible fish-wire with decent weight rating.
+The installation was rather easy, using nearly invisible fish-wire with decent weight rating. The LED's are however extremely bright on max setting, thus are mostly used around 15 to 40% intensity.
-===== Result =====
+I also added a little bash script on my Linux desktop, so that:
+  * Pressing F9-F10, changes the light temperature up/down
+  * Pressing F11-F12, changes the light intensity dim/brighter
+  * Holding shift when pressing the above buttons, changes the second ceiling lights configuration.