From e3e7db7fb4e2c79a7ec45051bb247c3411446637 Mon Sep 17 00:00:00 2001
From: abdalrouf-AAA <236259618+technologyet31-create@users.noreply.github.com>
Date: Tue, 14 Jul 2026 01:40:26 +0200
Subject: [PATCH] Add ESP32-C3 SuperMini common board

Adds the ESP32-C3 SuperMini (18 x 22.5mm) as a reusable board: two rows of
eight 2.54mm-pitch header pins carrying 5V/GND/3V3 and GPIO0-GPIO10, GPIO20 and
GPIO21, with PCB, schematic and 3d snapshots.

The pinout and the board's mechanical constants live in pinout.ts, so the
footprint's pin positions and the chip's pinLabels/schPinArrangement are all
derived from one list instead of repeating it.

The outline is quantized to 1e-6mm before it is handed to the board: the corner
arcs go through Math.cos/sin, which are not required to be correctly rounded and
differ by ~1 ULP between libm implementations, which would otherwise make the
PCB snapshot render differently per platform.

Co-authored-by: abdalrouf-AAA <236259618+technologyet31-create@users.noreply.github.com>
---
 index.tsx                                     |   1 +
 .../Esp32C3SuperMini.circuit.tsx              |  84 ++++++++++++++++++
 .../Esp32C3SuperMiniFootprint.tsx             |  40 +++++++++
 .../Esp32C3SuperMini.circuit-3d.snap.png      | Bin 0 -> 17419 bytes
 .../Esp32C3SuperMini.circuit-pcb.snap.svg     |   1 +
 ...sp32C3SuperMini.circuit-schematic.snap.svg |  25 ++++++
 lib/Esp32C3SuperMini/pinout.ts                |  36 ++++++++
 7 files changed, 187 insertions(+)
 create mode 100644 lib/Esp32C3SuperMini/Esp32C3SuperMini.circuit.tsx
 create mode 100644 lib/Esp32C3SuperMini/Esp32C3SuperMiniFootprint.tsx
 create mode 100644 lib/Esp32C3SuperMini/__snapshots__/Esp32C3SuperMini.circuit-3d.snap.png
 create mode 100644 lib/Esp32C3SuperMini/__snapshots__/Esp32C3SuperMini.circuit-pcb.snap.svg
 create mode 100644 lib/Esp32C3SuperMini/__snapshots__/Esp32C3SuperMini.circuit-schematic.snap.svg
 create mode 100644 lib/Esp32C3SuperMini/pinout.ts

diff --git a/index.tsx b/index.tsx
index a34bf53..a6e23ad 100644
--- a/index.tsx
+++ b/index.tsx
@@ -6,3 +6,4 @@ export * from "./lib/XiaoBoard/XiaoReceiver.circuit"
 export * from "./lib/ProMicroBoard/ProMicroBoard.circuit"
 // export * from "./Common Boards/RaspberryPiHatBoard/RaspberryPiHatBoard.circuit"
 export * from "./lib/ViaGridBoard/ViaGridBoard.circuit"
+export * from "./lib/Esp32C3SuperMini/Esp32C3SuperMini.circuit"
diff --git a/lib/Esp32C3SuperMini/Esp32C3SuperMini.circuit.tsx b/lib/Esp32C3SuperMini/Esp32C3SuperMini.circuit.tsx
new file mode 100644
index 0000000..8058072
--- /dev/null
+++ b/lib/Esp32C3SuperMini/Esp32C3SuperMini.circuit.tsx
@@ -0,0 +1,84 @@
+import type { BoardProps, ChipProps } from "@tscircuit/props"
+import { outlineBuilder } from "../../util/outlineBuilder"
+import { Esp32C3SuperMiniFootprint } from "./Esp32C3SuperMiniFootprint"
+import {
+  BOARD_LENGTH_MM,
+  BOARD_WIDTH_MM,
+  LEFT_PINS,
+  PINS_IN_FOOTPRINT_ORDER,
+  RIGHT_PINS,
+} from "./pinout"
+
+export type Esp32C3SuperMiniProps = {
+  boardProps?: BoardProps
+  chipProps?: Partial<ChipProps>
+  children?: any
+}
+
+const CORNER_RADIUS_MM = 1.5
+const halfWidth = BOARD_WIDTH_MM / 2
+const halfLength = BOARD_LENGTH_MM / 2
+
+const pinLabels = Object.fromEntries(
+  PINS_IN_FOOTPRINT_ORDER.map((label, index) => [`pin${index + 1}`, label]),
+)
+
+const schPinArrangement = {
+  leftSide: { direction: "top-to-bottom" as const, pins: [...LEFT_PINS] },
+  rightSide: { direction: "top-to-bottom" as const, pins: [...RIGHT_PINS] },
+}
+
+/**
+ * The corner arcs go through Math.cos/sin, which are not required to be
+ * correctly rounded and differ by ~1 ULP between libm implementations. Snapping
+ * to a 1nm grid keeps the outline, and therefore the rendered snapshot,
+ * identical on every platform.
+ */
+const snapToNanometerGrid = ({ x, y }: { x: number; y: number }) => ({
+  x: Math.round(x * 1e6) / 1e6,
+  y: Math.round(y * 1e6) / 1e6,
+})
+
+/** 18 x 22.5mm outline with rounded corners; USB-C sits on the bottom edge. */
+const outline = outlineBuilder(0, halfLength)
+  .lineTo(halfWidth, halfLength)
+  .corner({ radius: CORNER_RADIUS_MM, turn: "ccw" })
+  .lineTo(halfWidth, -halfLength)
+  .corner({ radius: CORNER_RADIUS_MM, turn: "ccw" })
+  .lineTo(-halfWidth, -halfLength)
+  .corner({ radius: CORNER_RADIUS_MM, turn: "ccw" })
+  .lineTo(-halfWidth, halfLength)
+  .corner({ radius: CORNER_RADIUS_MM, turn: "ccw" })
+  .lineTo(0, halfLength)
+  .toArray()
+  .map(snapToNanometerGrid)
+
+/**
+ * ESP32-C3 SuperMini development board (18 x 22.5mm) as a reusable common board.
+ * Two rows of eight 2.54mm-pitch header pins carrying 5V/GND/3V3 and
+ * GPIO0-GPIO10, GPIO20 and GPIO21.
+ */
+export const Esp32C3SuperMini = ({
+  boardProps = {},
+  chipProps = {},
+  children,
+}: Esp32C3SuperMiniProps) => {
+  const { name: resolvedName = "Esp32C3SuperMini", ...chipRest } = chipProps
+
+  return (
+    <board {...boardProps} outline={outline}>
+      <chip
+        {...chipRest}
+        name={resolvedName}
+        footprint={<Esp32C3SuperMiniFootprint />}
+        doNotPlace
+        pcbX={0}
+        pcbY={0}
+        pinLabels={pinLabels}
+        schWidth={1.4}
+        schPinArrangement={schPinArrangement}
+      />
+      {children}
+    </board>
+  )
+}
diff --git a/lib/Esp32C3SuperMini/Esp32C3SuperMiniFootprint.tsx b/lib/Esp32C3SuperMini/Esp32C3SuperMiniFootprint.tsx
new file mode 100644
index 0000000..d88bc88
--- /dev/null
+++ b/lib/Esp32C3SuperMini/Esp32C3SuperMiniFootprint.tsx
@@ -0,0 +1,40 @@
+import React from "react"
+import type { PlatedHoleProps } from "@tscircuit/props"
+import { PINS_PER_SIDE, PIN_PITCH_MM, ROW_SPACING_MM } from "./pinout"
+
+export interface Esp32C3SuperMiniFootprintProps {
+  holeDiameter?: number
+  outerDiameter?: number
+}
+
+/**
+ * Through-hole footprint for the ESP32-C3 SuperMini: two columns of eight
+ * 2.54mm-pitch pins, 15.24mm apart, matching the module's header rows.
+ * pin1-pin8 are the left column (top to bottom) and pin9-pin16 the right.
+ */
+export const Esp32C3SuperMiniFootprint = ({
+  holeDiameter = 1,
+  outerDiameter = 1.8,
+}: Esp32C3SuperMiniFootprintProps = {}) => {
+  const topPinY = ((PINS_PER_SIDE - 1) / 2) * PIN_PITCH_MM
+  const columnXs = [-ROW_SPACING_MM / 2, ROW_SPACING_MM / 2]
+
+  const holes = columnXs.flatMap((columnX, column) =>
+    Array.from({ length: PINS_PER_SIDE }, (_, row) => {
+      const pin = `pin${column * PINS_PER_SIDE + row + 1}`
+      const holeProps: PlatedHoleProps = {
+        portHints: [pin],
+        shape: "circle",
+        holeDiameter,
+        outerDiameter,
+        pcbX: columnX,
+        pcbY: topPinY - row * PIN_PITCH_MM,
+      }
+      // tscircuit's JSX types don't accept React's `key`, so build the element
+      // directly rather than widening the props to `any`.
+      return React.createElement("platedhole", { key: pin, ...holeProps })
+    }),
+  )
+
+  return <footprint>{holes}</footprint>
+}
diff --git a/lib/Esp32C3SuperMini/__snapshots__/Esp32C3SuperMini.circuit-3d.snap.png b/lib/Esp32C3SuperMini/__snapshots__/Esp32C3SuperMini.circuit-3d.snap.png
new file mode 100644
index 0000000000000000000000000000000000000000..92abea6c12b2c4dec0182284159dd61c809b3d08
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new file mode 100644
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new file mode 100644
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\ No newline at end of file
diff --git a/lib/Esp32C3SuperMini/pinout.ts b/lib/Esp32C3SuperMini/pinout.ts
new file mode 100644
index 0000000..b44bc29
--- /dev/null
+++ b/lib/Esp32C3SuperMini/pinout.ts
@@ -0,0 +1,36 @@
+/**
+ * ESP32-C3 SuperMini header pinout and mechanical constants.
+ *
+ * Pins are listed top to bottom exactly as they sit on the board, with the PCB
+ * antenna at the top and USB-C at the bottom.
+ */
+export const LEFT_PINS = [
+  "V5",
+  "GND",
+  "V3_3",
+  "IO4",
+  "IO3",
+  "IO2",
+  "IO1",
+  "IO0",
+] as const
+
+export const RIGHT_PINS = [
+  "IO5",
+  "IO6",
+  "IO7",
+  "IO8",
+  "IO9",
+  "IO10",
+  "IO20",
+  "IO21",
+] as const
+
+/** Footprint pin order: pin1-pin8 are the left column, pin9-pin16 the right. */
+export const PINS_IN_FOOTPRINT_ORDER = [...LEFT_PINS, ...RIGHT_PINS]
+
+export const PINS_PER_SIDE = LEFT_PINS.length
+export const PIN_PITCH_MM = 2.54
+export const ROW_SPACING_MM = 15.24
+export const BOARD_WIDTH_MM = 18
+export const BOARD_LENGTH_MM = 22.5