update: improve documentation and restructure code for modular hardware integration, add CAN communication to HAL, and update KiCad layouts

website/content/Hardware/1737993479095-NightLight/index.md

@@ -5,11 +5,36 @@ draft: false
 description: "a description"
 tags: ["nightlight"]
 ---
-# Nightlight
-The board has a adjustable light output, which can be used to power a small led strip.
-In the configuration, the working hours can be set, as well as if the light is allowed to be turned on, even if the solar panel still supplies power.
-The supply should theoretically be able to supply up to 2A with a voltage lower than the battery.
+# Nightlight Module
+The system supports a dedicated light output module, which can be used to power a small LED strip for night lighting or growth support.
 
+The module is based on the **AP63200** synchronous buck converter. It provides an adjustable output voltage, allowing it to drive various types of LED strips or other low-voltage DC loads.
+
+### Configuration
+The output voltage is adjustable via a potentiometer (**RV1**). This allows you to set the brightness or the correct operating voltage for your LED strip.
+
+#### Formula
+The reference voltage for the AP63200 is 0.8V. The output voltage is determined by the feedback divider:
+- $V_{OUT} = 0.8 \times (1 + \frac{R_{high}}{R5})$
+- $R_{high} = R1 + RV1 + R3$
+
+Default values:
+- $R1 = 10k\Omega$
+- $R3 = 1k\Omega$
+- $R5 = 5k\Omega$
+- $RV1 = 0\Omega$ to $50k\Omega$ (Potentiometer)
+
+With these values, the output voltage is adjustable from approximately **1.76V** to **9.76V**.
+
+### Status LED
+- **I1 (White):** Indicates that the light output is enabled.
+
+# Setup
 {{< alert >}}
-Ensure the voltage is correctly set, before connecting a load the first time!
-{{< /alert >}}
+Ensure the voltage is correctly set using **RV1** before connecting a load for the first time! High voltages can damage LED strips.
+{{< /alert >}}
+
+1. **Power On:** Enable the light output through the software interface.
+2. **Measure Voltage:** Use a multimeter to measure the voltage at the output connector (**LIGHT1**).
+3. **Adjust RV1:** Turn the potentiometer until you reach the desired voltage or brightness.
+4. **Connect Load:** Once the voltage is set correctly, you can connect your LED strip.