{
 "meta": {
  "version": "0.2",
  "priced_as_of": "2026-09",
  "currency": "USD"
 },
 "sections": [
  {
   "id": "actuators",
   "title": "Actuators",
   "tier": "core",
   "blurb": "Twenty-three RobStride quasi-direct-drive actuators in four models. Every joint of one model uses the same printed adapter, cup and support bearing, so the printed parts are a small family.",
   "rows": [
    {
     "id": "ACT_RS03",
     "part_id": "ACT_RS03",
     "description": "RobStride RS03 (60 N\u00b7m peak)",
     "qty": 11,
     "unit_cost": 225.0,
     "total": 2475.0,
     "vendor": "RobStride / Amazon US / AiFitLab",
     "url": "https://www.amazon.com/RobStride-60N-m-Integrated-Actuator-Module/dp/B0GY8PJ1MF",
     "notes": "Joints: Ankle pitch, Hip pitch, Hip roll, Hip yaw, Knee, Waist yaw. Supply risk: no drop-in substitute; a different model changes the bolt pattern, the bearing and the CAN setup.",
     "unit_label": "ea"
    },
    {
     "id": "ACT_RS06",
     "part_id": "ACT_RS06",
     "description": "RobStride RS06 (36 N\u00b7m peak)",
     "qty": 6,
     "unit_cost": 210.0,
     "total": 1260.0,
     "vendor": "RobStride / Amazon US / AiFitLab",
     "url": "https://www.robstride.com/",
     "notes": "Joints: Ankle roll, Shoulder pitch, Shoulder roll. Supply risk: no drop-in substitute; a different model changes the bolt pattern, the bearing and the CAN setup.",
     "unit_label": "ea"
    },
    {
     "id": "ACT_RS02",
     "part_id": "ACT_RS02",
     "description": "RobStride RS02 (17 N\u00b7m peak)",
     "qty": 4,
     "unit_cost": 145.0,
     "total": 580.0,
     "vendor": "RobStride / Amazon US / AiFitLab",
     "url": "https://www.amazon.com/RobStride-Integrated-Actuator-Module-Encoders/dp/B0GS5945VP",
     "notes": "Joints: Elbow, Shoulder yaw. Supply risk: no drop-in substitute; a different model changes the bolt pattern, the bearing and the CAN setup.",
     "unit_label": "ea"
    },
    {
     "id": "ACT_RS05",
     "part_id": "ACT_RS05",
     "description": "RobStride RS05 (5.5 N\u00b7m peak)",
     "qty": 2,
     "unit_cost": 110.0,
     "total": 220.0,
     "vendor": "RobStride / Amazon US / AiFitLab",
     "url": "https://www.robstride.com/",
     "notes": "Joints: Wrist roll. Supply risk: no drop-in substitute; a different model changes the bolt pattern, the bearing and the CAN setup.",
     "unit_label": "ea"
    }
   ],
   "subtotal": 4535.0
  },
  {
   "id": "electronics",
   "title": "Electronics and power",
   "tier": "core",
   "blurb": "One computer, one IMU, four CAN buses, two packs in series, and the safety chain Duke V2 lacked: breaker, contactor, E-stop.",
   "rows": [
    {
     "id": "EL_PC_N100",
     "part_id": "EL_PC_N100",
     "description": "Mini PC, Intel N100, 16 GB RAM, 500 GB SSD",
     "qty": 1,
     "unit_cost": 160.0,
     "total": 160.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Runs the 50 Hz policy and the 500 Hz motor loop. No GPU needed on the robot.",
     "unit_label": "ea"
    },
    {
     "id": "EL_IMU",
     "part_id": "EL_IMU",
     "description": "USB 9-axis AHRS IMU (SYD Dynamics TM171 or equivalent)",
     "qty": 1,
     "unit_cost": 57.0,
     "total": 57.0,
     "vendor": "RobotShop",
     "url": "https://www.robotshop.com/",
     "notes": "Mounted rigidly to the torso bottom plate, axes aligned with the base frame.",
     "unit_label": "ea"
    },
    {
     "id": "EL_CANABLE",
     "part_id": "EL_CANABLE",
     "description": "CANable PRO V2.0 USB-CAN adapter",
     "qty": 4,
     "unit_cost": 20.8,
     "total": 83.2,
     "vendor": "Amazon",
     "url": "https://www.amazon.com/",
     "notes": "One per bus: left leg, right leg, left arm + waist, right arm.",
     "unit_label": "ea"
    },
    {
     "id": "EL_USB_HUB",
     "part_id": "EL_USB_HUB",
     "description": "USB 3 hub, 4 port, powered",
     "qty": 1,
     "unit_cost": 13.0,
     "total": 13.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "EL_BATTERY_6S",
     "part_id": "EL_BATTERY_6S",
     "description": "LiPo 6S 8000 mAh 100C, EC5",
     "qty": 2,
     "unit_cost": 90.0,
     "total": 180.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Two in series: 44.4 V nominal, 50.4 V full. Zeee or equivalent.",
     "unit_label": "ea"
    },
    {
     "id": "EL_BUCK_12V",
     "part_id": "EL_BUCK_12V",
     "description": "48 V to 12 V buck converter, 10 A, encased",
     "qty": 1,
     "unit_cost": 19.0,
     "total": 19.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Feeds the computer, the hub and the gripper servos.",
     "unit_label": "ea"
    },
    {
     "id": "EL_DIST_BLOCK",
     "part_id": "EL_DIST_BLOCK",
     "description": "Power distribution block with 60 A fuse",
     "qty": 1,
     "unit_cost": 18.0,
     "total": 18.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "48 V bus and ground bars; ANL/MIDI fuse on the pack lead.",
     "unit_label": "ea"
    },
    {
     "id": "EL_BREAKER",
     "part_id": "EL_BREAKER",
     "description": "DC circuit breaker, 100 A, panel mount",
     "qty": 1,
     "unit_cost": 20.0,
     "total": 20.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Main disconnect and pack over-current protection.",
     "unit_label": "ea"
    },
    {
     "id": "EL_CONTACTOR",
     "part_id": "EL_CONTACTOR",
     "description": "DC contactor, 100 A, 12 V coil",
     "qty": 1,
     "unit_cost": 25.0,
     "total": 25.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Switched by the E-stop loop; carries the motor bus.",
     "unit_label": "ea"
    },
    {
     "id": "EL_ESTOP",
     "part_id": "EL_ESTOP",
     "description": "E-stop, 22 mm mushroom, NC contact",
     "qty": 1,
     "unit_cost": 12.0,
     "total": 12.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Opens the 48 V bus contactor coil. Duke V2 shipped without one; do not.",
     "unit_label": "ea"
    },
    {
     "id": "EL_TVS",
     "part_id": "EL_TVS",
     "description": "TVS diode, 53 V working / 85 V clamping (1.5KE62CA)",
     "qty": 6,
     "unit_cost": 1.2,
     "total": 7.2,
     "vendor": "DigiKey",
     "url": "",
     "notes": "One across each power block and at the bus ends.",
     "unit_label": "ea"
    },
    {
     "id": "EL_VOLT_ALARM",
     "part_id": "EL_VOLT_ALARM",
     "description": "LiPo voltage alarm, 1-8S",
     "qty": 2,
     "unit_cost": 7.0,
     "total": 14.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "One on each pack's balance lead.",
     "unit_label": "ea"
    },
    {
     "id": "EL_FUSE_10A",
     "part_id": "EL_FUSE_10A",
     "description": "Blade fuse holder + 10 A fuse",
     "qty": 1,
     "unit_cost": 4.0,
     "total": 4.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Computer feed, 48 V side.",
     "unit_label": "ea"
    }
   ],
   "subtotal": 612.4
  },
  {
   "id": "harness",
   "title": "Cables and connectors",
   "tier": "core",
   "blurb": "RobStride actuators carry power and CAN in one XT30(2+2) shell, in and out, so every limb is a daisy chain of identical drops.",
   "rows": [
    {
     "id": "CB_XT30_2P2_F",
     "part_id": "CB_XT30_2P2_F",
     "description": "Amass XT30(2+2)-F cable-side connector",
     "qty": 60,
     "unit_cost": 0.75,
     "total": 45.0,
     "vendor": "Amazon / AliExpress",
     "url": "",
     "notes": "Two per actuator drop plus bus heads and terminators; buy spares.",
     "unit_label": "ea"
    },
    {
     "id": "CB_EC5",
     "part_id": "CB_EC5",
     "description": "EC5 connector pair",
     "qty": 4,
     "unit_cost": 2.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Pack leads and series link.",
     "unit_label": "ea"
    },
    {
     "id": "CB_WIRE_18",
     "part_id": "CB_WIRE_18",
     "description": "18 AWG silicone wire, red + black, 10 m each",
     "qty": 1,
     "unit_cost": 20.0,
     "total": 20.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Actuator drops.",
     "unit_label": "ea"
    },
    {
     "id": "CB_WIRE_12",
     "part_id": "CB_WIRE_12",
     "description": "12 AWG silicone wire, red + black, 3 m each",
     "qty": 1,
     "unit_cost": 14.0,
     "total": 14.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Pack trunk, breaker, contactor, distribution block.",
     "unit_label": "ea"
    },
    {
     "id": "CB_CAT5",
     "part_id": "CB_CAT5",
     "description": "Ethernet cable, 10 m (twisted pairs for CAN)",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "One pair per CAN run.",
     "unit_label": "ea"
    },
    {
     "id": "CB_TERM",
     "part_id": "CB_TERM",
     "description": "120 \u03a9 resistors, 1/4 W",
     "qty": 10,
     "unit_cost": 0.2,
     "total": 2.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "One at each end of each bus.",
     "unit_label": "ea"
    },
    {
     "id": "CB_SHRINK",
     "part_id": "CB_SHRINK",
     "description": "Heat-shrink assortment",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "CB_LOOM",
     "part_id": "CB_LOOM",
     "description": "Braided loom, 6 mm and 10 mm, 5 m each",
     "qty": 1,
     "unit_cost": 10.0,
     "total": 10.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "CB_USB",
     "part_id": "CB_USB",
     "description": "USB-A to USB-C cables, 0.5 m",
     "qty": 3,
     "unit_cost": 3.0,
     "total": 9.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Hub to CAN adapters and IMU.",
     "unit_label": "ea"
    }
   ],
   "subtotal": 124.0
  },
  {
   "id": "hardware",
   "title": "Bearings, fasteners and extrusion",
   "tier": "core",
   "blurb": "Thin-section bearings support the back of every joint so the printed adapters see torque, not bending. Sizes follow Duke V2.",
   "rows": [
    {
     "id": "HW_6809_2RS",
     "part_id": "HW_6809_2RS",
     "description": "Ball bearing 6809-2RS, 45 x 58 x 7 mm",
     "qty": 11,
     "unit_cost": 3.0,
     "total": 33.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Output support bearing of every RS03 joint, on the coupler hub.",
     "unit_label": "ea"
    },
    {
     "id": "HW_6807_2RS",
     "part_id": "HW_6807_2RS",
     "description": "Ball bearing 6807-2RS, 35 x 47 x 7 mm",
     "qty": 6,
     "unit_cost": 4.0,
     "total": 24.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Output support bearing of every RS06 joint.",
     "unit_label": "ea"
    },
    {
     "id": "HW_6707_2RS",
     "part_id": "HW_6707_2RS",
     "description": "Ball bearing 6707-2RS, 35 x 44 x 5 mm",
     "qty": 8,
     "unit_cost": 3.0,
     "total": 24.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Output support bearing of every RS02 joint, and the inner-plate support bearing at the knees and elbows.",
     "unit_label": "ea"
    },
    {
     "id": "HW_2020_400",
     "part_id": "HW_2020_400",
     "description": "Aluminium 2020 extrusion, 400 mm, ends tapped M5",
     "qty": 4,
     "unit_cost": 4.5,
     "total": 18.0,
     "vendor": "Amazon / Misumi",
     "url": "",
     "notes": "Torso uprights. Cut to length or order pre-cut.",
     "unit_label": "ea"
    },
    {
     "id": "HW_TNUT_M4",
     "part_id": "HW_TNUT_M4",
     "description": "2020 T-nuts, M4, 50 pack",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_CORNER",
     "part_id": "HW_CORNER",
     "description": "2020 inner corner brackets",
     "qty": 8,
     "unit_cost": 0.7,
     "total": 5.6,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_OUT_RS03",
     "part_id": "HW_OUT_RS03",
     "description": "M4 x 35 socket-head screw, output couplers (RS03)",
     "qty": 66,
     "unit_cost": 0.15,
     "total": 9.9,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "6 per joint through the child plate and coupler into the output boss, PCD 30.36.",
     "unit_label": "ea"
    },
    {
     "id": "HW_LUG_RS03",
     "part_id": "HW_LUG_RS03",
     "description": "M4 x 30 socket-head screw, mount rings (RS03)",
     "qty": 88,
     "unit_cost": 0.12,
     "total": 10.56,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "8 per joint through the mount ring into the actuator's front lugs, PCD 98.",
     "unit_label": "ea"
    },
    {
     "id": "HW_OUT_RS06",
     "part_id": "HW_OUT_RS06",
     "description": "M4 x 35 socket-head screw, output couplers (RS06)",
     "qty": 36,
     "unit_cost": 0.15,
     "total": 5.4,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "6 per joint through the child plate and coupler into the output boss, PCD 24.",
     "unit_label": "ea"
    },
    {
     "id": "HW_LUG_RS06",
     "part_id": "HW_LUG_RS06",
     "description": "M3 x 30 socket-head screw, mount rings (RS06)",
     "qty": 48,
     "unit_cost": 0.12,
     "total": 5.76,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "8 per joint through the mount ring into the actuator's front lugs, PCD 88.",
     "unit_label": "ea"
    },
    {
     "id": "HW_OUT_RS02",
     "part_id": "HW_OUT_RS02",
     "description": "M4 x 30 socket-head screw, output couplers (RS02)",
     "qty": 24,
     "unit_cost": 0.15,
     "total": 3.6,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "6 per joint through the child plate and coupler into the output boss, PCD 24.",
     "unit_label": "ea"
    },
    {
     "id": "HW_LUG_RS02",
     "part_id": "HW_LUG_RS02",
     "description": "M3 x 20 socket-head screw, mount rings (RS02)",
     "qty": 36,
     "unit_cost": 0.12,
     "total": 4.32,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "9 per joint through the mount ring into the actuator's front lugs, PCD 73.",
     "unit_label": "ea"
    },
    {
     "id": "HW_OUT_RS05",
     "part_id": "HW_OUT_RS05",
     "description": "M4 x 10 socket-head screw, output couplers (RS05)",
     "qty": 12,
     "unit_cost": 0.15,
     "total": 1.8,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "6 per joint through the child plate and coupler into the output boss, PCD 24.",
     "unit_label": "ea"
    },
    {
     "id": "HW_REAR_RS05",
     "part_id": "HW_REAR_RS05",
     "description": "M3 x 10 socket-head screw, wrist mount (RS05)",
     "qty": 8,
     "unit_cost": 0.12,
     "total": 0.96,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "4 per joint through the forearm body into the RS05 rear holes, PCD 38.5.",
     "unit_label": "ea"
    },
    {
     "id": "HW_PIN_4X10",
     "part_id": "HW_PIN_4X10",
     "description": "Dowel pin \u00d84 x 10 mm, steel",
     "qty": 69,
     "unit_cost": 0.3,
     "total": 20.7,
     "vendor": "Amazon / McMaster",
     "url": "",
     "notes": "Three per joint, locate the coupler on the output boss.",
     "unit_label": "ea"
    },
    {
     "id": "HW_SCREWS",
     "part_id": "HW_SCREWS",
     "description": "M3 / M4 / M5 socket-head screw assortment, stainless",
     "qty": 1,
     "unit_cost": 25.0,
     "total": 25.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Plates, panels, tray, cradles, head.",
     "unit_label": "ea"
    },
    {
     "id": "HW_INSERT_M3",
     "part_id": "HW_INSERT_M3",
     "description": "Heat-set inserts M3 x 5, 200 pack",
     "qty": 1,
     "unit_cost": 15.0,
     "total": 15.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_INSERT_M4",
     "part_id": "HW_INSERT_M4",
     "description": "Heat-set inserts M4 x 6, 100 pack",
     "qty": 1,
     "unit_cost": 12.0,
     "total": 12.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_INSERT_M5",
     "part_id": "HW_INSERT_M5",
     "description": "Heat-set inserts M5 x 8, 50 pack",
     "qty": 1,
     "unit_cost": 10.0,
     "total": 10.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_NUTS",
     "part_id": "HW_NUTS",
     "description": "Nyloc nuts and washers M3 / M4 / M5",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "HW_LOCTITE",
     "part_id": "HW_LOCTITE",
     "description": "Threadlocker, medium strength",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "Every actuator flange screw.",
     "unit_label": "ea"
    }
   ],
   "subtotal": 253.6
  },
  {
   "id": "filament",
   "title": "Printed parts (filament)",
   "tier": "core",
   "blurb": "About 6.0 kg of structural prints, 0.8 kg of covers and 0.3 kg of TPU on the robot; the quantities below add 35 % for supports and failed prints.",
   "rows": [
    {
     "id": "MAT_PETG_CF",
     "part_id": "MAT_PETG_CF",
     "description": "PETG-CF filament, 1 kg spool",
     "qty": 8.5,
     "unit_cost": 30.0,
     "total": 255.0,
     "vendor": "Bambu / Polymaker / Overture",
     "url": "",
     "notes": "Every structural part. Hardened nozzle. PA-CF is a drop-in upgrade for the hip and knee brackets.",
     "unit_label": "kg"
    },
    {
     "id": "MAT_PLA",
     "part_id": "MAT_PLA",
     "description": "PLA filament, 1 kg spool",
     "qty": 1.5,
     "unit_cost": 20.0,
     "total": 30.0,
     "vendor": "Any",
     "url": "",
     "notes": "Panels, head, trays.",
     "unit_label": "kg"
    },
    {
     "id": "MAT_TPU",
     "part_id": "MAT_TPU",
     "description": "TPU 95A filament, 1 kg spool",
     "qty": 0.5,
     "unit_cost": 28.0,
     "total": 14.0,
     "vendor": "Any",
     "url": "",
     "notes": "Soles and finger pads.",
     "unit_label": "kg"
    }
   ],
   "subtotal": 299.0
  },
  {
   "id": "perception",
   "title": "Optional: perception kit",
   "tier": "optional",
   "blurb": "The base robot walks on IMU and joint encoders only, like Berkeley Humanoid Lite. Add a camera when you need it.",
   "rows": [
    {
     "id": "EL_CAMERA_D435I",
     "part_id": "EL_CAMERA_D435I",
     "description": "Intel RealSense D435i",
     "qty": 1,
     "unit_cost": 300.0,
     "total": 300.0,
     "vendor": "Intel / RealSense store",
     "url": "https://www.intelrealsense.com/",
     "notes": "Fits the head pocket. Needs USB 3 to the hub.",
     "unit_label": "ea"
    },
    {
     "id": "CB_USB3",
     "part_id": "CB_USB3",
     "description": "USB 3 cable, USB-C, 1 m",
     "qty": 1,
     "unit_cost": 10.0,
     "total": 10.0,
     "vendor": "Amazon",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    }
   ],
   "subtotal": 310.0
  },
  {
   "id": "grippers",
   "title": "Optional: gripper kit (two hands)",
   "tier": "optional",
   "blurb": "Duke V2's printed rack-and-pinion parallel gripper, driven by the cheapest widely stocked bus servo.",
   "rows": [
    {
     "id": "EL_SERVO_STS3215",
     "part_id": "EL_SERVO_STS3215",
     "description": "Feetech STS3215 bus servo, 12 V",
     "qty": 2,
     "unit_cost": 16.0,
     "total": 32.0,
     "vendor": "Feetech / Amazon",
     "url": "",
     "notes": "One per gripper.",
     "unit_label": "ea"
    },
    {
     "id": "EL_SERVO_DRIVER",
     "part_id": "EL_SERVO_DRIVER",
     "description": "Waveshare serial bus servo driver board",
     "qty": 1,
     "unit_cost": 5.0,
     "total": 5.0,
     "vendor": "Waveshare",
     "url": "",
     "notes": "Both servos on one bus; USB to the hub.",
     "unit_label": "ea"
    },
    {
     "id": "MAT_GRIPPER",
     "part_id": "MAT_GRIPPER",
     "description": "Filament for both grippers (PLA + TPU)",
     "qty": 1,
     "unit_cost": 8.0,
     "total": 8.0,
     "vendor": "Any",
     "url": "",
     "notes": "",
     "unit_label": "lot"
    }
   ],
   "subtotal": 45.0
  },
  {
   "id": "tools",
   "title": "Tools (one-time)",
   "tier": "tools",
   "blurb": "Not part of the robot. Estimates for a lab or workshop that starts from nothing.",
   "rows": [
    {
     "id": "TL_PRINTER",
     "part_id": "TL_PRINTER",
     "description": "FDM printer with a hardened nozzle and 250 mm bed (e.g. Bambu P1S / X1C class)",
     "qty": 1,
     "unit_cost": 700.0,
     "total": 700.0,
     "vendor": "",
     "url": "",
     "notes": "Largest part is the foot plate, 230 mm.",
     "unit_label": "ea"
    },
    {
     "id": "TL_CHARGER",
     "part_id": "TL_CHARGER",
     "description": "LiPo balance charger, 6S, 200 W+",
     "qty": 1,
     "unit_cost": 60.0,
     "total": 60.0,
     "vendor": "",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "TL_PSU",
     "part_id": "TL_PSU",
     "description": "Bench power supply, 0-60 V, 10 A",
     "qty": 1,
     "unit_cost": 90.0,
     "total": 90.0,
     "vendor": "",
     "url": "",
     "notes": "Bring-up on a current-limited supply before the packs go in.",
     "unit_label": "ea"
    },
    {
     "id": "TL_SOLDER",
     "part_id": "TL_SOLDER",
     "description": "Soldering station + heat-set insert tips",
     "qty": 1,
     "unit_cost": 50.0,
     "total": 50.0,
     "vendor": "",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "TL_DRIVERS",
     "part_id": "TL_DRIVERS",
     "description": "Hex driver set, torque wrench 1-10 N\u00b7m",
     "qty": 1,
     "unit_cost": 45.0,
     "total": 45.0,
     "vendor": "",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "TL_METER",
     "part_id": "TL_METER",
     "description": "Multimeter",
     "qty": 1,
     "unit_cost": 20.0,
     "total": 20.0,
     "vendor": "",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "TL_CANTOOL",
     "part_id": "TL_CANTOOL",
     "description": "RobStride USB-CAN tool (for ID setting) or use a CANable",
     "qty": 1,
     "unit_cost": 20.0,
     "total": 20.0,
     "vendor": "",
     "url": "",
     "notes": "",
     "unit_label": "ea"
    },
    {
     "id": "TL_STAND",
     "part_id": "TL_STAND",
     "description": "Gantry or hoist rated 50 kg, 1.4 m clear height",
     "qty": 1,
     "unit_cost": 150.0,
     "total": 150.0,
     "vendor": "",
     "url": "",
     "notes": "Hang the robot for every bring-up step.",
     "unit_label": "ea"
    }
   ],
   "subtotal": 1135.0
  }
 ],
 "tiers": {
  "core": 5824.0,
  "optional": 355.0,
  "tools": 1135.0
 }
}