{
 "digest": null,
 "links": {
  "fits": [],
  "members": [],
  "cases": [],
  "assemblies": []
 },
 "prints": [],
 "part": {
  "id": "pca9685-servo-driver",
  "name": "PCA9685 16-ch 12-bit PWM/Servo Driver (HiLetgo, Adafruit 815 layout)",
  "kind": "",
  "method": "",
  "vendor": "generic",
  "sku": "",
  "model": "",
  "buy": [
   "https://www.amazon.com/s?k=pca9685+16+channel+pwm+servo+driver"
  ],
  "url": "",
  "category": "driver",
  "owned_qty": 0
 },
 "facts": {
  "id": "pca9685-servo-driver",
  "name": "PCA9685 16-ch 12-bit PWM/Servo Driver (HiLetgo",
  "aka": [
   "Adafruit 815 clone",
   "16-channel servo driver"
  ],
  "vendor": "amazon",
  "url": null,
  "qty_owned": 2,
  "category": "driver",
  "frame": "origin PCB plan bottom-left (re-based), Z=0 PCB bottom; header pins protrude to z=-2.01",
  "body": {
   "size_mm": [
    62.23,
    25.4,
    12.1
   ],
   "outline": "rounded-rect",
   "pcb_thickness": 1.57,
   "max_height_top": 10.09,
   "max_height_bottom": 2.01
  },
  "mounting": {
   "holes": [
    {
     "xy": [
      3.17,
      3.18
     ],
     "dia": 2.5,
     "thread": null,
     "keepout_dia": 4.8
    },
    {
     "xy": [
      3.17,
      22.23
     ],
     "dia": 2.5,
     "thread": null,
     "keepout_dia": 4.8
    },
    {
     "xy": [
      59.05,
      3.18
     ],
     "dia": 2.5,
     "thread": null,
     "keepout_dia": 4.8
    },
    {
     "xy": [
      59.05,
      22.23
     ],
     "dia": 2.5,
     "thread": null,
     "keepout_dia": 4.8
    }
   ],
   "pattern": "55.88 x 19.05",
   "notes": "16x 3-pin servo headers along Y=0 edge need top+front cable room; V+ terminal block at top center"
  },
  "electrical": {
   "vin": "5-6V servo rail (terminal block) + 3-5V logic",
   "logic_v": 3.3,
   "protocols": [
    "i2c",
    "pwm"
   ],
   "i2c_addr": [
    "0x40"
   ],
   "notes": "addr jumpers A0-A5 (0x40-0x7F); chainable; 25mA/channel logic - servo current via V+ rail"
  },
  "cad": {
   "file": "amz-pca9685-servo-driver.step",
   "fidelity": "vendor",
   "source": "adafruit/Adafruit_CAD_Parts @ ab3dfc47c324, '815 Servo Driver 16 Channel/...step', re-based to PCB corner (original in ref/)",
   "verified": true
  },
  "sources": [
   {
    "facts": "all geometry",
    "ref": "vendor STEP (measured after re-base)",
    "date": "2026-07-23"
   }
  ],
  "confidence": "HiLetgo clone assumed dimensionally identical to Adafruit 815 (standard clone layout) - spot-check hole pattern with calipers if fit-critical"
 },
 "models": [
  {
   "handle": "sarg",
   "fidelity": "vendor",
   "verified": true,
   "visibility": "public",
   "url": "/m/sarg/pca9685-servo-driver",
   "files": [
    "amz-pca9685-servo-driver.step",
    "part.yaml"
   ]
  }
 ],
 "related": {
  "notes": {
   "exact": [],
   "chip": [],
   "addr": []
  },
  "parts": {
   "variants": [],
   "interface": [],
   "mounting": [],
   "cooccur": [],
   "owners": [],
   "addr": [
    {
     "product": "ada-2928-servo-featherwing",
     "name": "8-Channel PWM/Servo FeatherWing",
     "why": "0x40",
     "url": "/p/ada-2928-servo-featherwing"
    }
   ]
  }
 }
}