{
 "slug": "clockstar-2-0",
 "name": "Clockstar 2.0",
 "maker": "CircuitMess",
 "category": "kits",
 "categoryLabel": "DIY & play",
 "status": "listed",
 "statusLabel": "Listed by maker",
 "description": "A kit for building and programming a smartwatch.",
 "goodFor": "Build and program a Bluetooth smartwatch.",
 "youNeed": "Kit assembly and CircuitBlocks.",
 "tradeoff": "Confirm the board revision and supported phone software before flashing.",
 "tags": [
  "DIY watch",
  "Bluetooth",
  "Motion sensors",
  "CircuitBlocks"
 ],
 "price": "US$99 kit",
 "priceShort": "$99",
 "priceFrom": null,
 "checked": "2026-09-15",
 "url": "https://gadgets.sh/devices/clockstar-2-0/",
 "shortUrl": "https://gadgets.sh/clockstar-2-0",
 "markdown": "https://gadgets.sh/devices/clockstar-2-0.md",
 "image": "https://gadgets.sh/assets/clockstar-2-0.jpg",
 "cutout": "https://gadgets.sh/assets/cutouts/clockstar-2-0.webp",
 "shareCard": "https://gadgets.sh/og/clockstar-2-0.jpg",
 "shops": [
  {
   "merchant": "CircuitMess",
   "label": "Buy from CircuitMess",
   "kind": "shop",
   "orderable": true,
   "url": "https://circuitmess.com/products/clockstar-2-0?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=clockstar-2-0&utm_content=api",
   "note": "In stock at CircuitMess when checked on 2026-09-24."
  },
  {
   "merchant": "Amazon",
   "label": "Buy from Amazon",
   "kind": "shop",
   "orderable": true,
   "url": "https://www.amazon.com/dp/B0GKPXZWRK?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=clockstar-2-0&utm_content=api",
   "note": "In stock at Amazon when checked on 2026-09-24."
  }
 ],
 "specs": [
  {
   "group": "Build and package",
   "rows": [
    {
     "label": "Project",
     "value": "Build a programmable smartwatch; about 1 hour; beginner-friendly, ages 9+",
     "source": "https://circuitmess.com/products/clockstar-2-0"
    },
    {
     "label": "Included",
     "value": "Main board, acrylic case, watch strap, LiPo battery and screws",
     "source": "https://circuitmess.com/products/clockstar-2-0"
    },
    {
     "label": "Assembly tool",
     "value": "Screwdriver included in the 2025 creator booklet",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_booklet_2025_PRINT.pdf"
    }
   ]
  },
  {
   "group": "Hardware in the linked v2.4 drawing",
   "rows": [
    {
     "label": "Processor",
     "value": "ESP32-S3-MINI-1-N4R2",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    },
    {
     "label": "Display",
     "value": "Drawing labels a 1.44-inch TFT with a 12-pin connection",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    },
    {
     "label": "Battery",
     "value": "600 mAh LiPo with a two-pin JST 1.25 connection",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    },
    {
     "label": "USB and charging",
     "value": "USB-C and TP4054 charging circuit",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    },
    {
     "label": "Motion and clock",
     "value": "LSM6DS3TR-C motion sensor and BM8563ESA real-time clock",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    },
    {
     "label": "Controls and feedback",
     "value": "Left/right/push lever, separate button, buzzer and RGB LED",
     "source": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
    }
   ]
  },
  {
   "group": "Use and programming",
   "rows": [
    {
     "label": "Built-in functions",
     "value": "Time, date, alarm and stopwatch; Bluetooth phone connection",
     "source": "https://circuitmess.com/products/clockstar-2-0"
    },
    {
     "label": "Custom projects",
     "value": "CircuitBlocks watch faces, animations, timers, button actions and motion games; coding is optional",
     "source": "https://circuitmess.com/products/clockstar-2-0"
    },
    {
     "label": "Stock recovery",
     "value": "CircuitBlocks Restore Firmware, or the revision-specific prebuilt binary using the repository’s instructions",
     "source": "https://github.com/CircuitMess/Clockstar-v2-Firmware"
    },
    {
     "label": "Source build",
     "value": "Clockstar-v2 repository specifies ESP-IDF 5.1, recursive submodules and its ESP-IDF/LovyanGFX patches",
     "source": "https://github.com/CircuitMess/Clockstar-v2-Firmware"
    },
    {
     "label": "Download reviewed",
     "value": "v1.3 release; notes updated Bluetooth functionality support",
     "source": "https://github.com/CircuitMess/Clockstar-v2-Firmware/releases/tag/v1.3"
    }
   ]
  }
 ],
 "docs": [
  {
   "label": "Clockstar 2.0 product",
   "url": "https://circuitmess.com/products/clockstar-2-0"
  },
  {
   "label": "Exact 2.0 guide and downloads",
   "url": "https://circuitmess.com/blogs/resources/clockstar-2-0-build-guide"
  },
  {
   "label": "Clockstar 2.0 creator booklet PDF",
   "url": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_booklet_2025_PRINT.pdf"
  },
  {
   "label": "Clockstar 2.0 schematic PDF, internal v2.4",
   "url": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf"
  },
  {
   "label": "CircuitBlocks online editor — sign-in required",
   "url": "https://code.circuitmess.com/"
  },
  {
   "label": "Clockstar v2 firmware and build instructions",
   "url": "https://github.com/CircuitMess/Clockstar-v2-Firmware"
  },
  {
   "label": "Clockstar v2 firmware v1.3 release",
   "url": "https://github.com/CircuitMess/Clockstar-v2-Firmware/releases/tag/v1.3"
  }
 ],
 "blueprint": {
  "openness": "schematics",
  "opennessLabel": "Schematics published",
  "summary": "Schematic PDF and versioned firmware releases are public; no editable PCB source or Gerbers found.",
  "files": [
   {
    "kind": "schematic",
    "label": "Clockstar 2.0 schematic (PDF)",
    "url": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_schema.pdf",
    "format": "PDF"
   },
   {
    "kind": "manual",
    "label": "Clockstar 2.0 build booklet (PDF)",
    "url": "https://cdn.shopify.com/s/files/1/0552/3269/2430/files/Clockstar_2.0_booklet_2025_PRINT.pdf",
    "format": "PDF"
   }
  ],
  "repos": [
   {
    "url": "https://github.com/CircuitMess/Clockstar-v2-Firmware",
    "role": "firmware",
    "official": true,
    "license": null,
    "stars": 2,
    "pushed": "2026-08-10"
   }
  ],
  "parts": [
   {
    "part": "ESP32-S3-MINI-1-N4R2",
    "role": "MCU",
    "datasheet": "https://www.espressif.com/sites/default/files/documentation/esp32-s3-mini-1_esp32-s3-mini-1u_datasheet_en.pdf"
   }
  ],
  "notes": "Schematic PDF verified 200; Clockstar-v2-Firmware repo (2 stars) has a tagged v1.3 release, no license field, no hardware/KiCad directory found.",
  "checked": "2026-09-27"
 },
 "sourceFiles": null,
 "firmware": [],
 "chips": [
  "esp32-s3",
  "pcf8563"
 ]
}