From 4708d5419524c2e1b2e71669cebdf84d2fd0800f Mon Sep 17 00:00:00 2001
From: davidmonterocrespo24 <davidmonterocrespo24@gmail.com>
Date: Thu, 23 Apr 2026 05:22:35 +0200
Subject: [PATCH] fix(examples): re-create board when loading an Arduino
 example after an analog one
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Loading an analog-only example removes every board. The single-board
branch of loadExample then called setBoardType, which only maps over
existing entries in boards[] and silently did nothing when the array
was empty — components rendered but no board. Fall back to addBoard +
setActiveBoardId when there are no boards.
---
 frontend/src/utils/loadExample.ts | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/frontend/src/utils/loadExample.ts b/frontend/src/utils/loadExample.ts
index 6856c706..1119bc1e 100644
--- a/frontend/src/utils/loadExample.ts
+++ b/frontend/src/utils/loadExample.ts
@@ -6,7 +6,7 @@
 import type { ExampleProject } from '../data/examples';
 import type { BoardKind } from '../types/board';
 import { useEditorStore } from '../store/useEditorStore';
-import { useSimulatorStore } from '../store/useSimulatorStore';
+import { useSimulatorStore, DEFAULT_BOARD_POSITION } from '../store/useSimulatorStore';
 import { useVfsStore } from '../store/useVfsStore';
 import { isBoardComponent } from './boardPinMapping';
 import { getInstalledLibraries, installLibrary } from '../services/libraryService';
@@ -155,7 +155,19 @@ export async function loadExample(
       currentIds.forEach((id) => removeBoard(id));
     } else {
       const targetBoard = example.boardType || 'arduino-uno';
-      setBoardType(targetBoard);
+      // If boards[] is empty (e.g. a previous analog example removed every
+      // board), setBoardType can't work — it only maps over existing entries.
+      // Add a fresh board instead.
+      if (useSimulatorStore.getState().boards.length === 0) {
+        const newId = addBoard(
+          targetBoard as BoardKind,
+          DEFAULT_BOARD_POSITION.x,
+          DEFAULT_BOARD_POSITION.y,
+        );
+        setActiveBoardId(newId);
+      } else {
+        setBoardType(targetBoard);
+      }
     }
     useEditorStore.getState().setCode(example.code);