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[posts/2026/04/exposure-unit-upgrade] Added note about double sided controller pcb

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BlueFox
2026-04-10 23:34:46 +02:00
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content/posts/2026/04/exposure-unit-upgrade/index.en.md
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@@ -14,7 +14,7 @@ After a long period of using the [unit]({{< ref "posts/2025/04/diy-uv-pcb-exposu
## 1. PCB Problems {id=problems}
The increased number of LEDs also increases the power requirement. And that posed a problem - the first control board was only rated for 1A at 12V. So a new one is needed - the exposure unit exposes its own controller board.
The increased number of LEDs also increases the power requirement. And that posed a problem - the first control board was only rated for 1A at 12V. So a new one is needed - the exposure unit exposes its own new controller board.
![The layout](pcb_arrangement.png)
@@ -22,6 +22,8 @@ Compared to the first version, the advantage of PCBs over breadboards is clear:
{{< figure src="pcb_comparison_old_new.jpg" alt="The new and old controller boards compared; the new one is significantly smaller than the old one" caption="Left: new - right: old" >}}
A double-sided layout made it possible to significantly reduce the amount of space required.
## 2. Fresh coat