From 7680ad4c9981eab093c763d69f65aaa540b4fb58 Mon Sep 17 00:00:00 2001
From: ShiboSoftwareDev <shibosoftwaredev@gmail.com>
Date: Wed, 12 Nov 2025 16:59:57 +0200
Subject: [PATCH 1/2] feat(docs): Add RC circuit example for SPICE simulation

---
 docs/advanced/spice-simulation.mdx | 65 +++++++++++++++++++++++++++++-
 1 file changed, 64 insertions(+), 1 deletion(-)

diff --git a/docs/advanced/spice-simulation.mdx b/docs/advanced/spice-simulation.mdx
index 79a9a70..25dd9c5 100644
--- a/docs/advanced/spice-simulation.mdx
+++ b/docs/advanced/spice-simulation.mdx
@@ -21,7 +21,7 @@ This component configures and enables the analog simulation for the board.
 | ------------- | ------ | ----------------------------------------------------- |
 | `duration`    | number | The total duration of the simulation (e.g., in seconds).    |
 | `timePerStep` | number | The time interval between simulation steps (e.g., in seconds). |
-| `spiceEngine` | string | The SPICE engine to use (e.g., `"ngspice"`).            |
+| `spiceEngine` | string | The SPICE engine to use. Can be `"spicey"` (default) or `"ngspice"`. |
 
 Example:
 
@@ -153,3 +153,66 @@ export default () => (
 `} />
 
 The simulation results would show the output voltage across `R1` successfully "boosted" compared to the 5V input from `V1`. The specific output voltage depends on the duty cycle of the MOSFET driver `V2` and the component values.
+
+## Example: RC Charging Circuit
+
+Here's an example of an RC circuit that forms a voltage divider with a capacitor. This also functions as a low-pass filter. Since no `spiceEngine` is specified in `<analogsimulation />`, it uses the default `spicey` engine. Voltage probes are placed at the input and output to observe the charging behavior.
+
+<CircuitPreview
+  defaultView="schematic"
+  showSimulationGraph={true}
+  code={`
+export default () => (
+      <board width={16} height={16} schMaxTraceDistance={5}>
+        <voltagesource
+          name="V1"
+          voltage="5V"
+          schX={-4}
+          schY={1}
+          schRotation={270}
+        />
+        <resistor
+          name="R1"
+          resistance="1k"
+          footprint="0402"
+          schX={-1}
+          schY={0}
+          pcbX={4}
+          pcbY={4}
+        />
+        <resistor
+          name="R2"
+          resistance="2k"
+          footprint="0402"
+          schX={2}
+          schY={1}
+          schRotation={270}
+          pcbX={-4}
+          pcbY={-4}
+        />
+        <capacitor
+          name="C1"
+          capacitance="10uF"
+          footprint="0402"
+          schX={2}
+          schY={1}
+          pcbX={0}
+          pcbY={-2}
+        />
+
+        <trace from={".V1 > .pin1"} to={".R1 > .pin1"} />
+        <trace from={".R1 > .pin2"} to={".R2 > .pin1"} />
+        <trace from={".R1 > .pin2"} to={".C1 > .pin1"} />
+        <trace from={".V1 > .pin2"} to={"net.GND"} />
+        <trace from={".R2 > .pin2"} to={"net.GND"} />
+        <trace from={".C1 > .pin2"} to={"net.GND"} />
+
+        <voltageprobe connectsTo={".R1 > .pin1"} />
+        <voltageprobe connectsTo={".R1 > .pin2"} />
+
+        <analogsimulation duration={100} timePerStep={1} />
+      </board>
+)
+`} />
+
+The simulation results will show the voltage at the junction of `R1`, `R2`, and `C1` charging towards the Thevenin equivalent voltage of the R1-R2 divider.

From 84094de6e06410a40f44dd02feb21091bb699895 Mon Sep 17 00:00:00 2001
From: ShiboSoftwareDev <shibosoftwaredev@gmail.com>
Date: Wed, 12 Nov 2025 17:06:52 +0200
Subject: [PATCH 2/2] layout

---
 docs/advanced/spice-simulation.mdx | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/docs/advanced/spice-simulation.mdx b/docs/advanced/spice-simulation.mdx
index 25dd9c5..67e42cd 100644
--- a/docs/advanced/spice-simulation.mdx
+++ b/docs/advanced/spice-simulation.mdx
@@ -176,7 +176,7 @@ export default () => (
           resistance="1k"
           footprint="0402"
           schX={-1}
-          schY={0}
+          schY={4}
           pcbX={4}
           pcbY={4}
         />
@@ -184,8 +184,8 @@ export default () => (
           name="R2"
           resistance="2k"
           footprint="0402"
-          schX={2}
-          schY={1}
+          schX={3}
+          schY={3}
           schRotation={270}
           pcbX={-4}
           pcbY={-4}
@@ -195,7 +195,7 @@ export default () => (
           capacitance="10uF"
           footprint="0402"
           schX={2}
-          schY={1}
+          schY={1.5}
           pcbX={0}
           pcbY={-2}
         />