crawler: --no-cover, --concurrency, drop cross-host sleep + batch-50 Step 1 done

Three crawler ergonomics for batch operations:

--no-cover  Skip cover image download. For scan-only modes (license/meta
            scrape) this drops ~1.3s/project and avoids slow-CDN hangs.

--concurrency N  ThreadPoolExecutor wrapping the per-project loop. Default
                 1 = serial (current behavior). Anonymous endpoints tolerate
                 5+ comfortably; output uses a print lock for readable
                 interleaved progress. fetch_cover plumbs through crawl_one.

Drop cross-host sleep #1: in crawl_one between detail HTML (oshwhub.com)
and cover image (image.lceda.cn). Different hosts — sleep was unnecessary.
Saves ~1s/project. Sleep #2 (post-cover, before next iteration) stays — it
gates the next oshwhub.com hit.

download_to gains max_seconds wall budget (default 60s, cover uses 15s).
Defends against pathologically slow CDN connections — observed 10 KB/s
on image.lceda.cn for one project, would have hung 6+ min on a 3.6 MB
cover otherwise. httpx default timeout resets per chunk, so streaming
downloads need an external wall-clock guard.

batch-50 Step 1 (license/meta scrape) shipped:
  50/50 candidates have metadata.json + license recorded
  License distribution: GPL 3.0 32, Public Domain 6, NC variants 8,
                        CERN-OHL 1, MIT 1, CC BY 3.0 1
  Forge-friendly (non-NC): 41/50 (82%)
  Declared attachments: 180 files / 2.36 GB (median 18 MB/proj, max 304 MB)
  Walltime: 3min 26s for 28 projects at concurrency=5 (server-side
            HTML render bound, not sleep-bound)

One orphan partial cover (a670e60a...) cleaned up — leftover from the
first aborted run before the timeout fix landed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crawlers/oshwhub/crawler.py

@@ -21,6 +21,7 @@ import json
 import re
 import shutil
 import sys
+import threading
 import time
 import urllib.parse
 from datetime import datetime, timezone
@@ -258,15 +259,30 @@ def parse_detail_html(h: str) -> dict:
 # Download helpers
 # ---------------------------------------------------------------------------
 
-def download_to(client: httpx.Client, url: str, dest: Path) -> tuple[int, str]:
+def download_to(
-    """Stream-download url to dest. Returns (size, sha256)."""
+    client: httpx.Client, url: str, dest: Path, *, max_seconds: float = 60.0
+) -> tuple[int, str]:
+    """Stream-download url to dest. Returns (size, sha256).
+
+    `max_seconds` caps total download walltime — defends against
+    pathologically slow CDN connections (observed 10 KB/s on
+    image.lceda.cn for one project, would have hung 6+ min on a 3.6 MB
+    cover otherwise). httpx's default timeout resets per chunk, so
+    relying on it for streaming is unsafe. We track wall time ourselves.
+    """
     dest.parent.mkdir(parents=True, exist_ok=True)
     h = hashlib.sha256()
     size = 0
+    t_start = time.monotonic()
     with client.stream("GET", url) as r:
         r.raise_for_status()
         with open(dest, "wb") as f:
             for chunk in r.iter_bytes(1 << 15):
+                if time.monotonic() - t_start > max_seconds:
+                    raise httpx.ReadTimeout(
+                        f"download exceeded {max_seconds}s wall budget "
+                        f"(got {size} of {r.headers.get('content-length', '?')} bytes)"
+                    )
                 f.write(chunk)
                 h.update(chunk)
                 size += len(chunk)
@@ -904,6 +920,7 @@ def crawl_one(
     list_item: dict,
     out_root: Path,
     fetch_files: bool = True,
+    fetch_cover: bool = True,
     source_client: httpx.Client | None = None,
     pro_source_client: httpx.Client | None = None,
     skip_exts: set[str] | None = None,
@@ -914,23 +931,28 @@ def crawl_one(
     proj_dir = out_root / uuid
     proj_dir.mkdir(parents=True, exist_ok=True)
 
-    # 1. Fetch detail HTML
+    # 1. Fetch detail HTML.
+    # No polite_sleep after — the next call goes to image.lceda.cn (cover)
+    # or to attachment CDN, both different hosts from the detail server.
+    # Sleep is used to space hits to the *same* host before the next iteration.
     detail_url = f"{BASE}/{path}"
     r = client.get(detail_url)
     r.raise_for_status()
     detail = parse_detail_html(r.text)
-    polite_sleep()
 
-    # 2. Cover image
+    # 2. Cover image (skipped via fetch_cover=False — useful for scan-only modes
+    # like Step 1 of batch ingest where we only want license/meta).
     thumb_url = list_item["thumb"]
     if thumb_url.startswith("//"):
         thumb_url = "https:" + thumb_url
     cover_rel = None
-    if thumb_url:
+    if thumb_url and fetch_cover:
         ext = Path(urllib.parse.urlparse(thumb_url).path).suffix or ".jpg"
         cover_rel = f"cover{ext}"
         try:
-            download_to(client, thumb_url, proj_dir / cover_rel)
+            # Cover thumbs should be small (~100-300 KB). Cap walltime at 15s
+            # so a pathologically slow CDN connection can't hang the loop.
+            download_to(client, thumb_url, proj_dir / cover_rel, max_seconds=15.0)
         except httpx.HTTPError as e:
             print(f"  cover failed: {e}", file=sys.stderr)
             cover_rel = None
@@ -1177,6 +1199,30 @@ def main(argv: list[str] | None = None) -> int:
              "Trips inside the chain loop, wipes partial source/, records to "
              "data/state/oshwhub_pro_oversize.jsonl. No effect on Std or Pro 2.x legacy.",
     )
+    ap.add_argument(
+        "--from-jsonl",
+        type=Path,
+        default=None,
+        help="read pre-selected listing items from a jsonl (one item per line, "
+             "shape matches /api/project listing entries). Bypasses the listing "
+             "API entirely — useful when candidates were chosen offline from the "
+             "full-corpus index, where most aren't in the default top-N pages.",
+    )
+    ap.add_argument(
+        "--no-cover",
+        action="store_true",
+        help="skip cover image download. For scan-only runs (license / meta scrape) "
+             "this drops ~1.3s/project and avoids slow-CDN hangs.",
+    )
+    ap.add_argument(
+        "--concurrency",
+        type=int,
+        default=1,
+        help="number of parallel crawl_one workers (ThreadPoolExecutor). Default 1 "
+             "= serial. Anonymous endpoints (oshwhub.com detail/listing) tolerate "
+             "concurrency 5+ comfortably; only enable when no auth is involved or "
+             "you've probed the host.",
+    )
     args = ap.parse_args(argv)
     skip_exts: set[str] | None = (
         {x.strip().lower().lstrip(".") for x in args.skip_ext.split(",") if x.strip()}
@@ -1200,7 +1246,13 @@ def main(argv: list[str] | None = None) -> int:
 
     with make_client() as client:
         # Build list of items to crawl
+        if args.from_jsonl:
+            items = [json.loads(ln) for ln in args.from_jsonl.read_text().splitlines() if ln.strip()]
             if args.uuids:
+                wanted = set(args.uuids.split(","))
+                items = [i for i in items if i.get("uuid") in wanted]
+            print(f"loaded {len(items)} items from {args.from_jsonl}")
+        elif args.uuids:
             wanted = set(args.uuids.split(","))
             items: list[dict] = []
             for it in iter_candidates(
@@ -1234,26 +1286,41 @@ def main(argv: list[str] | None = None) -> int:
             make_pro_source_client(args.pro_cookie) if args.with_pro_source else None
         )
         try:
-            print(f"Crawling {len(items)} projects -> {args.out}")
+            print(f"Crawling {len(items)} projects -> {args.out}  (concurrency={args.concurrency})")
-            for i, it in enumerate(items, 1):
+            print_lock = threading.Lock()
-                print(f"[{i}/{len(items)}] {it['path']}  ({it['name']})")
+
+            def _do_one(i: int, it: dict) -> None:
                 try:
                     r = crawl_one(
                         client,
                         it,
                         args.out,
                         fetch_files=not args.no_files,
+                        fetch_cover=not args.no_cover,
                         source_client=source_client_ctx,
                         pro_source_client=pro_source_client_ctx,
                         skip_exts=skip_exts,
                         max_source_mb=args.max_source_mb,
                     )
+                    with print_lock:
                         print(
-                        f"  OK: {r.files_count} files, {r.bytes_total / 1024 / 1024:.1f} MB "
+                            f"[{i}/{len(items)}] OK {it['path']}: "
+                            f"{r.files_count} files, {r.bytes_total / 1024 / 1024:.1f} MB "
                             f"(skipped: {len(r.skipped_files)})"
                         )
-                except Exception as e:
+                except Exception as e:  # noqa: BLE001
-                    print(f"  FAIL: {e}", file=sys.stderr)
+                    with print_lock:
+                        print(f"[{i}/{len(items)}] FAIL {it['path']}: {e}", file=sys.stderr)
+
+            if args.concurrency <= 1:
+                for i, it in enumerate(items, 1):
+                    _do_one(i, it)
+            else:
+                from concurrent.futures import ThreadPoolExecutor, as_completed
+                with ThreadPoolExecutor(max_workers=args.concurrency) as pool:
+                    futs = [pool.submit(_do_one, i, it) for i, it in enumerate(items, 1)]
+                    for f in as_completed(futs):
+                        f.result()
         finally:
             if source_client_ctx is not None:
                 source_client_ctx.close()

data/raw/oshwhub/0369a515056840798905fdb26359073f/_urls.json

@@ -0,0 +1,21 @@
+{
+  "detail_url": "https://oshwhub.com/xiangyang0926/ke-diao-dian-yuan_copy",
+  "cover_url": "https://image.lceda.cn/pullimage/Q9gETfMMCdjRKFeGzbtK1kqsl2o5vZ6CUQqBBLXg.jpeg",
+  "attachments": [
+    {
+      "name": "video_210910_180053.mp4",
+      "url": "https://image.lceda.cn/attachments/2021/9/793PVcgg0vjA9EkX01JzMlnPcwLHed4xsxANMe7l.mp4",
+      "original_id": "9c65cafa58f54301821248af96ca306d"
+    },
+    {
+      "name": "video_220331_005603.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/3/vLGeuGiqAVTTaw3Q1B2A8LW8w9xF1AktY6TS8UCT.mp4",
+      "original_id": "c1df60f8d2a34972b86c0697bb48738d"
+    },
+    {
+      "name": "studio_video_1662741926320.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/9/K3mO4IAVIiARN0dclyTE94hn2674p5oTMVnyqb17.mp4",
+      "original_id": "494c6d4535e7496d869b2cad0e4f6ded"
+    }
+  ]
+}

data/raw/oshwhub/0369a515056840798905fdb26359073f/description.md

@@ -0,0 +1,11 @@
+# 桌面可调电源（经济实惠款）
+
+桌面电源（经济实惠款）
+我愿称之为芯龙之光
+芯龙全家桶
+
+---
+- Source: https://oshwhub.com/xiangyang0926/ke-diao-dian-yuan_copy
+- Author: xiangyang0926 (xiangyang0926)
+- License: Public Domain
+- Published: 2022-09-19T10:11:49.000Z

data/raw/oshwhub/0369a515056840798905fdb26359073f/metadata.json

@@ -0,0 +1,68 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/xiangyang0926/ke-diao-dian-yuan_copy",
+  "project_id": "0369a515056840798905fdb26359073f",
+  "title": "桌面可调电源（经济实惠款）",
+  "description_short": "桌面电源（经济实惠款）\n我愿称之为芯龙之光\n芯龙全家桶",
+  "description_path": "description.md",
+  "author": {
+    "username": "xiangyang0926",
+    "display_name": "xiangyang0926",
+    "user_id": "c12b5ac758cb4e5e9a42a6505f9fa9f0"
+  },
+  "license": "Public Domain",
+  "tags": [],
+  "created_at": "2021-09-03T06:18:08.000Z",
+  "updated_at": "2026-04-04T03:46:12.000Z",
+  "published_at": "2022-09-19T10:11:49.000Z",
+  "crawled_at": "2026-04-28T17:27:33.265974+00:00",
+  "metrics": {
+    "likes": 857,
+    "stars": 1918,
+    "forks": 766,
+    "views": 180839,
+    "watch": 0,
+    "comments": 314
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/pullimage/Q9gETfMMCdjRKFeGzbtK1kqsl2o5vZ6CUQqBBLXg.jpeg",
+    "path": null
+  },
+  "files": [
+    {
+      "name": "video_210910_180053.mp4",
+      "url": "https://image.lceda.cn/attachments/2021/9/793PVcgg0vjA9EkX01JzMlnPcwLHed4xsxANMe7l.mp4",
+      "original_id": "9c65cafa58f54301821248af96ca306d",
+      "ext": "mp4",
+      "mime": "video/mp4",
+      "size": 32236477,
+      "md5": "2414d4e9a8813b17d484218e1d264dfa"
+    },
+    {
+      "name": "video_220331_005603.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/3/vLGeuGiqAVTTaw3Q1B2A8LW8w9xF1AktY6TS8UCT.mp4",
+      "original_id": "c1df60f8d2a34972b86c0697bb48738d",
+      "ext": "mp4",
+      "mime": "video/mp4",
+      "size": 10412978,
+      "md5": "77916109c6b4240014c6ef3841e01ac6"
+    },
+    {
+      "name": "studio_video_1662741926320.mp4",
+      "url": "https://image.lceda.cn/attachments/2022/9/K3mO4IAVIiARN0dclyTE94hn2674p5oTMVnyqb17.mp4",
+      "original_id": "494c6d4535e7496d869b2cad0e4f6ded",
+      "ext": "mp4",
+      "mime": "video/mp4",
+      "size": 15204924,
+      "md5": "a5915439393d38140902b809151e4e9f"
+    }
+  ],
+  "raw_fields": {
+    "path": "xiangyang0926/ke-diao-dian-yuan_copy",
+    "grade": 3,
+    "origin": "std",
+    "public": true,
+    "publish": true,
+    "skipped_files": []
+  }
+}

data/raw/oshwhub/03b939e5e6e544408e0879202ebc20ce/_urls.json

@@ -0,0 +1,91 @@
+{
+  "detail_url": "https://oshwhub.com/bryan_he/usb-ps-v30",
+  "cover_url": "https://image.lceda.cn/oshwhub/02c786878782461daaea1f2679e947c3.jpg",
+  "attachments": [
+    {
+      "name": "UP_SHELL.stp",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/fe24cf66b1ec44ea90ee4f84d8f13579.stp",
+      "original_id": "e0ab43ef325b407f807f420f4872c500"
+    },
+    {
+      "name": "DW_SHELL.stp",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/96c42de256974c499d0f6190a29db656.stp",
+      "original_id": "7cdef1490b6744cba57dabb5d501b5b6"
+    },
+    {
+      "name": "3D_PRINT_SHELL_2mm.stp",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/8526ff7d003d4125beaa279062807f8b.stp",
+      "original_id": "0fb510d9b7184e47882804eca5bc648f"
+    },
+    {
+      "name": "USB-PS-V3-演示视频.mp4",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/f448fff414d44a2081944ccb0f9adaf1.mp4",
+      "original_id": "a408733f2cbd48c6802d141b3a5272f8"
+    },
+    {
+      "name": "uart2ble_tools .7z",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/b10801221297404297f85bd768fd8ebb.7z",
+      "original_id": "0ff78fffd0b14cd4a05c3286c7d0f546"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V1.1.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/ac463ba72da645f7b902cf85beed3a27.hex",
+      "original_id": "b1e7bfed2e3447f3ab169d8ccb93c72f"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V1.2.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/64597dd50ce849f3b9956de52f2fa43e.hex",
+      "original_id": "7085bb6d72cd4269ae8ce57438f95592"
+    },
+    {
+      "name": "USB-PS-V3-煮开水.mp4",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/60ab89b45eea4dacba513ccd88c5e3af.mp4",
+      "original_id": "cac2193764cc44d3b2cd19388cbaa33a"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V2.1-for-HW4.4.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/2ff04fb300ee418b8ea5a25f043f8fdc.hex",
+      "original_id": "ce45a16319064b70becb4372fd32a116"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V2.3-for-HWV4.4.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/e7514010034442c08cbb10be0755c1e9.hex",
+      "original_id": "ee1520adb12d4a14868b6e1590dc6e43"
+    },
+    {
+      "name": "小程序演示.mp4",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/7be3c8e2229b435084ade0a96b49892d.mp4",
+      "original_id": "1b957a1a8b1040fe8f93623c340d31d5"
+    },
+    {
+      "name": "基本功能演示.mp4",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/af520259599a4665a8fddaf1c494003a.mp4",
+      "original_id": "fa327881fca94388915e23481596ac12"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V2.4-for-HWV4.4.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/e584a5d2a2034a3199a849d687d5c31d.hex",
+      "original_id": "d21d07c0335d44719b8edd265bd8e2b0"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V2.6-for-HW4.4.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/7806bc484e394f3c9c6ad4298fdc8460.hex",
+      "original_id": "c31ea38996f848058d0a3e2cb8b95290"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V2.8-for-HW4.7.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/cfcb951a1aac4c64b3f2062f082adbad.hex",
+      "original_id": "f19cfe79e680466d8af197d3aaa617a2"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V3.0-for-HW4.7.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/29696e9994f948bbac9972252676e81b.hex",
+      "original_id": "b56ef1745c074fd7bd9d4dfcf98651df"
+    },
+    {
+      "name": "AT32F421F8P7-USB-PS-V3-V3.1-for-HWV4.7.hex",
+      "url": "https://image.lceda.cn/oshwhub/project/attachments/3ba25297e30546b98e0b8802f999adea.hex",
+      "original_id": "027ac804a8bd4c2483bc4bb8ff2f89aa"
+    }
+  ]
+}

data/raw/oshwhub/03b939e5e6e544408e0879202ebc20ce/description.md

@@ -0,0 +1,9 @@
+# USB可调电源V3,硬件V4.7全面升级
+
+USB可调电源,输入防倒灌防反接，输出防倒灌，支持USB PD3.0，BC1.2等，DC 5V~27V输入，输出电压2V ~ 34V连续可调，大于5A的带载能力，限流10mA~8A连续可调
+
+---
+- Source: https://oshwhub.com/bryan_he/usb-ps-v30
+- Author: 黑马小乌龟 (bryan_he)
+- License: GPL 3.0
+- Published: 2025-03-17T01:45:41.000Z

data/raw/oshwhub/03b939e5e6e544408e0879202ebc20ce/metadata.json

@@ -0,0 +1,194 @@
+{
+  "source": "oshwhub",
+  "source_url": "https://oshwhub.com/bryan_he/usb-ps-v30",
+  "project_id": "03b939e5e6e544408e0879202ebc20ce",
+  "title": "USB可调电源V3,硬件V4.7全面升级",
+  "description_short": "USB可调电源,输入防倒灌防反接，输出防倒灌，支持USB PD3.0，BC1.2等，DC 5V~27V输入，输出电压2V ~ 34V连续可调，大于5A的带载能力，限流10mA~8A连续可调",
+  "description_path": "description.md",
+  "author": {
+    "username": "bryan_he",
+    "display_name": "黑马小乌龟",
+    "user_id": "1eb895ea1970464ba4a8e4a1565b0830"
+  },
+  "license": "GPL 3.0",
+  "tags": [],
+  "created_at": "2024-06-25T12:38:31.001Z",
+  "updated_at": "2025-12-19T00:37:21.000Z",
+  "published_at": "2025-03-17T01:45:41.000Z",
+  "crawled_at": "2026-04-28T17:24:05.511268+00:00",
+  "metrics": {
+    "likes": 521,
+    "stars": 1314,
+    "forks": 0,
+    "views": 112947,
+    "watch": 0,
+    "comments": 292
+  },
+  "cover": {
+    "url": "https://image.lceda.cn/oshwhub/02c786878782461daaea1f2679e947c3.jpg",
+    "path": "cover.jpg"
+  },
+  "files": [
+    {
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data/raw/oshwhub/0bc142e0f24e4b06ab6d555f935eca98/description.md

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+# 飞行器设计之5.8Ghz图传
+
+此工程主要是进行飞行器的5.8Ghz图传设计，实现飞行器上摄像头视频信号的发射。主要包括原理图设计、PCB设计和电路仿真。原理图和PCB设计最多占此工程工作量的30%，电路仿真是非常耗时且繁琐过程。
+
+---
+- Source: https://oshwhub.com/clz1/5.8Ghztu-zhuan
+- Author: DroneCYF (clz1)
+- License: CC-BY-NC-SA 3.0
+- Published: 2023-09-11T07:13:46.000Z

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data/raw/oshwhub/126f1a61e36a4e859cd7a0c15ddcefe5/description.md

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+# [LiThermal] 热成像相机
+
+基于全志T113-S3和海康威视4117的热成像相机
+
+---
+- Source: https://oshwhub.com/lxu0423/lithermal-thermal-imaging-camera
+- Author: 小李电子实验室 (lxu0423)
+- License: GPL 3.0
+- Published: 2024-12-30T01:07:54.000Z

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data/raw/oshwhub/13f634be49f647319760111c0f7474fa/description.md

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+# ESP32升降压光伏MPPT+数字可调电源
+
+本方案从MPPT降压版本的基础上修改，支持降压或者升压，通过板载开关及使用专用的程序对升降压进行切换
+
+---
+- Source: https://oshwhub.com/muyan2020/wei-yan-zheng-esp32-guang-fu-pv-mppt-ina226_copy_copy_copy_copy_copy
+- Author: muyan2020 (muyan2020)
+- License: GPL 3.0
+- Published: 2023-08-23T08:48:55.000Z

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+  "project_id": "13f634be49f647319760111c0f7474fa",
+  "title": "ESP32升降压光伏MPPT+数字可调电源",
+  "description_short": "本方案从MPPT降压版本的基础上修改，支持降压或者升压，通过板载开关及使用专用的程序对升降压进行切换",
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data/raw/oshwhub/201d355452dc48d988f0ddbd981a8a4d/description.md

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+# 自平衡的莱洛三角_esp32_可充电_10*10版本
+
+esp32作为主控，5V充3串锂电池，可实现摇摆自平衡。
+
+---
+- Source: https://oshwhub.com/45coll/zi-ping-heng-di-lai-luo-san-jiao_10-10-ban-ben
+- Author: 45coll (45coll)
+- License: GPL 3.0
+- Published: 2022-07-21T05:23:04.000Z

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+  "title": "自平衡的莱洛三角_esp32_可充电_10*10版本",
+  "description_short": "esp32作为主控，5V充3串锂电池，可实现摇摆自平衡。",
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+# ESP32 万能遥控器
+
+基于ESP32-S3做一个万能的遥控器，作为以后各种RC模型，机器人的通用控制方案。
+还可以蓝牙连接电脑玩游戏，或者在遥控器上玩自己编写的游戏。
+
+---
+- Source: https://oshwhub.com/bukaiyuan/ESP32-hang-mu-yao-kong-qi
+- Author: 科技大卜玩 (bukaiyuan)
+- License: GPL 3.0
+- Published: 2023-09-27T05:44:40.000Z

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data/raw/oshwhub/29ff00b5fc83498681271320e8855bc7/description.md

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+# 立创EDA尺子（PCB直尺）
+
+立创EDA官方使用立创EDA设计的PCB尺子，喜欢可以直接在嘉立创下单生产
+
+---
+- Source: https://oshwhub.com/OSHWHubkai-yuan-ying-jian/li-chuangeda-chi-zi
+- Author: OSHWHub开源硬件 (OSHWHubkai-yuan-ying-jian)
+- License: GPL 3.0
+- Published: 2023-03-22T09:43:20.000Z

data/raw/oshwhub/29ff00b5fc83498681271320e8855bc7/metadata.json

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+  "project_id": "29ff00b5fc83498681271320e8855bc7",
+  "title": "立创EDA尺子（PCB直尺）",
+  "description_short": "立创EDA官方使用立创EDA设计的PCB尺子，喜欢可以直接在嘉立创下单生产",
+  "description_path": "description.md",
+  "author": {
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+    "display_name": "OSHWHub开源硬件",
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+{
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data/raw/oshwhub/2f01fdb9fbaf499f8b537081ce3e4a66/description.md

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+# ZYNQ7020核心板及各种射频模块
+
+ZYNQ7020核心板（主体，最低成本仅需90元！）、170MSPSADC、210MSPSDAC、1.6GSPS 16bit DAC、9GHz PLL、500MSPS 12bit ADC等
+
+---
+- Source: https://oshwhub.com/z_star/zynq7020-core-board-and-various-rf-modules
+- Author: 上电冒烟 (z_star)
+- License: CC BY 3.0
+- Published: 2024-01-25T15:57:56.000Z

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data/raw/oshwhub/3bec6b84391a4004b115d7d4f1a2e193/description.md

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+# 【开源】STM32四轴遥控器
+
+基于小马哥RoboFly开源四轴制作的四轴遥控器。
+
+---
+- Source: https://oshwhub.com/eda_sbnvoqqej/kai-yuan-si-zhou-yao-kong-qi
+- Author: 酷电科技馆 (eda_sbnvoqqej)
+- License: GPL 3.0
+- Published: 2024-07-15T01:07:12.000Z

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+# 最丐17+4TPRO机械键盘
+
+2025年10月11日稳定性更新： 
+1. 修复上报32位坐标溢出的问题
+2. 每次W11_LAMP更新时切换到在线模式
+3. 屏蔽休眠恢复后的重加载功能
+
+---
+- Source: https://oshwhub.com/yangzen/xing-huo-ji-hua-zui-gai-17-4-chu-mo-ji-xie-jian-pan-pro
+- Author: 画板当吃生菜 (yangzen)
+- License: GPL 3.0
+- Published: 2025-10-11T03:00:53.000Z

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data/raw/oshwhub/48dd1b650d084739bef92ab8a651975a/description.md

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+# IP5389[100瓦双向快充移动电源方案]
+
+100瓦双向快充移动电源方案
+
+---
+- Source: https://oshwhub.com/wzw666/ip5389
+- Author: 小煜哥哥 (wzw666)
+- License: CC-BY-NC-SA 3.0
+- Published: 2022-09-13T01:15:55.000Z

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data/raw/oshwhub/4f06b185aae542eb94497acef0a9144b/description.md

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+# USB3.0千兆网卡-RTL8153B
+
+这是基于RTL8153B的千兆USB网卡。
+
+---
+- Source: https://oshwhub.com/Kirito/usb3-0-wang-ka-rtl8153b
+- Author: Kirito (Kirito)
+- License: GPL 3.0
+- Published: 2022-07-21T07:48:13.000Z

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data/raw/oshwhub/53e6c236b9d14e74944e460ac11c7c1d/description.md

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+# ESP32S3 86盒开发板 带触摸
+
+使用ESP32S3N8R8作为主控的86面板开发板，带触摸带扬声器，可用于86面板开发，LVGL开发
+
+---
+- Source: https://oshwhub.com/myzhazha/esp32s3_86-kai-fa-ban
+- Author: 小渣渣 (myzhazha)
+- License: GPL 3.0
+- Published: 2024-01-02T02:06:18.000Z

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data/raw/oshwhub/5e03b6545745463bb8b64813209ffb8c/description.md

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+# 简易数字示波器设计（入门版）
+
+打造一套针对电子爱好者及学生学习数字示波器的基础项目，以单片机核心板与插件元器件结合起来，十分适合入门学习！
+
+---
+- Source: https://oshwhub.com/course-examples/yi-qi-yi-biao-jian-yi-shu-zi-shi-bo-qi-she-ji-cha-jian-ban
+- Author: EDA课程案例团队 (course-examples)
+- License: GPL 3.0
+- Published: 2026-01-16T09:07:45.000Z

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data/raw/oshwhub/6f0c151b366d46fe90126093dd604afe/description.md

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+# 承载我所有幻想的键盘
+
+支持WIFI的4模机械键盘（USB、蓝牙、WIFI、2.4G接收器），搭载可拆卸FOC旋钮屏，支持SurfaceDial，支持多功能磁吸扩展（例如小键盘等），支持语音交互。
+
+---
+- Source: https://oshwhub.com/ran-pang/multifunctional-keyboard
+- Author: 蓝星多面体 (ran-pang)
+- License: CC BY-NC-SA 3.0
+- Published: 2026-03-02T03:05:48.000Z

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data/raw/oshwhub/72312817efb6449ca520216c820c432c/description.md

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+# 全志H6开发板-从零入门ARM高速电路设计
+
+本项目开源主要目的是帮助想学ARM高速电路的小伙伴们，学会自己做一个ARM开发板(eg. 全志H6开发板)。快来看看是否真从零入门，有手就行！
+
+---
+- Source: https://oshwhub.com/logicworld/h6_board
+- Author: logicworld (logicworld)
+- License: CERN Open Hardware License
+- Published: 2023-12-11T05:43:19.000Z

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+# SIMPLEFOC_无刷电机大功率双通道驱动（已验证）
+
+应该是市面上最便宜的方案吧
+双路大功率无刷直流电机驱动
+支持arduino,esp32,esp8266,stm32等~
+支持simplefoc
+
+---
+- Source: https://oshwhub.com/zjsxzc217/simplefoc_-tai-gong-shuai-shuang-tong-dao
+- Author: 成真科技 (zjsxzc217)
+- License: GPL 3.0
+- Published: 2022-07-28T12:48:19.000Z

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+# 【征集令】超漂亮的个人时钟天气站 SD²
+
+esp12f模块是一个具有WiFi的微处理器，用他来打造一个超漂亮的个人时钟天气站吧！
+
+---
+- Source: https://oshwhub.com/MisakaBanBan/small_desktop_display
+- Author: MisakaBanBan (MisakaBanBan)
+- License: GPL 3.0
+- Published: 2022-07-28T08:41:38.000Z

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+# Super Dial 电机旋钮屏—esp32s3—v2
+
+灵感来源与国外的smart konb，制作初衷为制作一个桌面力反馈旋钮，可实现与surface dial一样的功能。
+
+---
+- Source: https://oshwhub.com/45coll/a2fff3c71f5d4de2b899c64b152d3da5
+- Author: 45coll (45coll)
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data/raw/oshwhub/8101a18ad83a49b8937b4c3b25d4490a/description.md

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+# EDA-Robot机器狗
+
+此项目采用ESP8266主控，支持手机遥控，采用插件封装，非常适合新手焊接。
+
+---
+- Source: https://oshwhub.com/course-examples/bot-dog
+- Author: EDA课程案例团队 (course-examples)
+- License: GPL 3.0
+- Published: 2025-11-19T01:45:41.000Z

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data/raw/oshwhub/81e13f4b2c8942dca536bfe23e2bf1dc/description.md

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+# ESP32墨水屏MP3收音机阅读器
+
+天气 阅读 图片 时钟 MP3 收音机 配网 设置
+
+---
+- Source: https://oshwhub.com/jie326513988/ESP32mi-ni-mo-shui-ping-MP3shou-
+- Author: 甘草酸不酸 (jie326513988)
+- License: GPL 3.0
+- Published: 2024-05-28T01:15:46.000Z

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data/raw/oshwhub/8624bf3d43ba4732bb256c08aafe186b/description.md

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+# 【ESP32-S3】1.69寸触摸屏迷你控制器~
+
+基于ESP32-S3，板载1.69寸LCD总成接口、蜂鸣器、SD卡槽、AXP173电源管理，双排母引出大部分引脚供底板拓展功能。
+
+---
+- Source: https://oshwhub.com/eda_rgprdhwej/chappie_oshw
+- Author: 海底撩 (eda_rgprdhwej)
+- License: MIT
+- Published: 2022-12-02T01:17:24.000Z

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data/raw/oshwhub/9158ea94e9654f6eb2cca93b5c2a9c32/description.md

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+# 触摸无极调光雪花灯（陶瓷灯丝）（新手小白也可以做！）
+
+触摸无极调光，无频闪无需烧录程序，焊接简单有教程，送朋友，当挂件都可。Type-C接口，成本不算邮费五块左右。附带焊接教程与所有物料链接！配套亚克力外壳与充电底座都已开源，迭代完成放心食用。
+
+---
+- Source: https://oshwhub.com/mondraker/snow_light
+- Author: mondraker (mondraker)
+- License: GPL 3.0
+- Published: 2024-12-18T05:45:21.000Z

data/raw/oshwhub/9158ea94e9654f6eb2cca93b5c2a9c32/metadata.json

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+  "title": "触摸无极调光雪花灯（陶瓷灯丝）（新手小白也可以做！）",
+  "description_short": "触摸无极调光，无频闪无需烧录程序，焊接简单有教程，送朋友，当挂件都可。Type-C接口，成本不算邮费五块左右。附带焊接教程与所有物料链接！配套亚克力外壳与充电底座都已开源，迭代完成放心食用。",
+  "description_path": "description.md",
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+    "username": "mondraker",
+    "display_name": "mondraker",
+    "user_id": "37d334fe908b4df9b508da7318220388"
+  },
+  "license": "GPL 3.0",
+  "tags": [],
+  "created_at": "2022-04-05T15:41:17.000Z",
+  "updated_at": "2026-03-11T09:15:59.000Z",
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data/raw/oshwhub/91fd41224cd74ffd8410bc77b216693b/description.md

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+# ESP-SparkBot
+
+ESP-SparkBot 基于 ESP32-S3，融合语音交互、图像识别与多媒体娱乐，可变身遥控小车、玩转本地 AI，支持大模型对话、实时视频传输和高清视频投屏，性能强大，乐趣无限！
+
+---
+- Source: https://oshwhub.com/esp-college/esp-sparkbot
+- Author: 乐鑫小铁匠 (esp-college)
+- License: GPL 3.0
+- Published: 2025-03-12T05:42:19.000Z

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+  "updated_at": "2025-11-11T10:24:51.000Z",
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data/raw/oshwhub/929b16138f744f498c55840a87c141be/_urls.json

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+{
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+  "cover_url": "https://image.lceda.cn/pullimage/cwNUVdKKMKru1Zm3GxRHOkVtJvPBbInHGOebLFTD.jpeg",
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+    }
+  ]
+}

data/raw/oshwhub/929b16138f744f498c55840a87c141be/description.md

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+# 二代单词卡--萤囊
+
+二代单词卡来啦！增加了许多新特性哦！
+
+---
+- Source: https://oshwhub.com/zhushengji/er-dai-dan-ci-ka
+- Author: 夏襄居士 (zhushengji)
+- License: Public Domain
+- Published: 2023-07-03T03:23:54.000Z

data/raw/oshwhub/929b16138f744f498c55840a87c141be/metadata.json

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+  "description_short": "二代单词卡来啦！增加了许多新特性哦！",
+  "description_path": "description.md",
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+  "created_at": "2022-10-10T08:54:32.000Z",
+  "updated_at": "2026-01-21T05:43:36.000Z",
+  "published_at": "2023-07-03T03:23:54.000Z",
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+{
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data/raw/oshwhub/977b637a85fa44fbb5d4214373576a04/description.md

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+# [PD协议 | 高颜值]mini加热台
+
+超迷你的加热台，PD20V供电，加热面大小5.6*5.6cm，可以通过两个按键设置参数。
+
+---
+- Source: https://oshwhub.com/littleoandlittleq/bian-xie-jia-re-tai
+- Author: 小O和小Q (littleoandlittleq)
+- License: GPL 3.0
+- Published: 2023-07-27T01:58:31.000Z

data/raw/oshwhub/977b637a85fa44fbb5d4214373576a04/metadata.json

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+{
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+    },
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data/raw/oshwhub/a670e60acee54566a9f3e841bb634274/description.md

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+# 【嵌入式】逐梦壹号-基于STC32的智能小车设计
+
+如果说小时候有什么梦想，那可能就是想拥有一辆属于自己的四驱车了。为了圆造车梦，将电路学习、PCB设计、焊接与单片机开发结合起来，真正做到零基础学习，这辆小车我们便给它取名为：逐梦壹号。
+
+---
+- Source: https://oshwhub.com/wei-lai-dian-zi-gong-zuo-shi/qian-ru-shi-ji-yu-stc32-de-zhi-nen-xiao-che-she-ji
+- Author: 未来电子工作室 (wei-lai-dian-zi-gong-zuo-shi)
+- License: GPL 3.0
+- Published: 2023-09-14T12:30:21.000Z

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+  "description_short": "如果说小时候有什么梦想，那可能就是想拥有一辆属于自己的四驱车了。为了圆造车梦，将电路学习、PCB设计、焊接与单片机开发结合起来，真正做到零基础学习，这辆小车我们便给它取名为：逐梦壹号。",
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+# 电赛神器：FPGA+STM32开发板
+
+本设计为FPGA+STM32开发板，可处理高速信号，带8bit并行高速AD/DA，满足电赛信号类题目设计需要。
+
+---
+- Source: https://oshwhub.com/Kirito/dian-sai-shen-qi-FPGA-STM32kai-f
+- Author: Kirito (Kirito)
+- License: GPL 3.0
+- Published: 2022-07-18T14:13:46.000Z