The goBILDA Robot in 3 Days is a live stream we do once a year following the FIRST Tech Challenge Kickoff In this Repo, you'll find the .step (3d CAD) file for the robot we built, the code that runs the robot, and a bill-of-materials.
download the .java file and either copy it into your teamcode folder in Android Studio, or upload it to your Control Hub for Onbot Java.
Using kits: We built this robot using three kits, the FTC Starter Kit, a Strafer Chassis, and a 2 Stage Viper Slide Kit. This BoM assumes that you also get/have those three kits.
Note: This BoM is not as playtested as normal goBILDA kits. We have not built an exact copy of this robot to ensure that the BoM is correct. We're pretty sure, but it's possible there's a small thing missing here or there. If you find an issue with either of these BoMs, reach out!
| SKU | QTY | Name |
|---|---|---|
| 3200-4008-2425 | 1 | FTC Starter Kit (2024-2025 Season) |
| 3209-0001-0007 | 1 | Strafer™ Chassis Kit (104mm GripForce™ Mecanum Wheels) |
| 3210-0003-0002 | 1 | 2 Stage Viper-Slide Kit (Belt-Driven, 336mm Slides) |
| 1101-0005-0040 | 0.5 packs (1 total) | 1101 Series U-Beam (5 Hole, 40mm Length) |
| 1106-0007-0056 | 2 | 1106 Series Square Beam (7 Hole, 56mm Length) |
| 1120-0008-0216 | 1 | 1120 Series U-Channel (8 Hole, 216mm Length) |
| 1120-0014-0360 | 2 | 1120 Series U-Channel (14 Hole, 360mm Length) |
| 1121-0003-0096 | 1 | 1121 Series Low-Side U-Channel (3 Hole, 96mm Length) |
| 1121-0008-0216 | 2 | 1121 Series Low-Side U-Channel (8 Hole, 216mm Length) |
| 1123-0043-0048 | 1 | 1123 Series Pattern Plate (1 x 1 Hole, 43 x 48mm) |
| 1205-0001-0005 | 1 (2 total) | 1205 Series Dual Block Mount (1-5) - 2 Pack |
| 1205-0002-0001 | 1.5 packs (3 total) | 1205 Series Dual Block Mount (2-1) - 2 Pack |
| 1500-0010-0004 | 0.166 packs (2 total) | 1500 Series Plastic Spacer (4mm ID x 6mm OD, 1mm Thickness) - 12 Pack |
| 1501-0006-0160 | 0.5 packs (2 total) | 1501 Series M4 x 0.7mm Standoff (6mm OD, 16mm Length) - 4 Pack |
| 1502-0006-0080 | 0.5 packs (2 total) | 1502 Series 4mm ID Spacer (6mm OD, 8mm Length) - 4 Pack |
| 1502-0006-0160 | 0.5 packs (2 total) | 1502 Series 4mm ID Spacer (6mm OD, 16mm Length) - 4 Pack |
| 1516-4008-0400 | 1.5 packs (6 total) | 1516 Series 8mm REX™ Standoff (M4 x 0.7mm Threads, 40mm Length) - 4 Pack |
| 1522-0010-0060 | 0.25 packs (1 total) | 1522 Series 8mm ID Spacer (10mm OD, 6mm Length) - 4 Pack |
| 1601-0412-0006 | 2 (4 total) | 6mm ID Flanged Ball Bearing (12mm OD, 4mm Thickness) - 2 Pack |
| 2807-0609-0250 | 0.166 (2 total) | 6mm ID Stainless Steel Shim (9mm OD, 0.25mm Thickness) - 12 Pack |
| 2924-1015-1000 | 1 | Cable-Carrier Chain (10mm x 15mm, 1 meter Length) |
| 3801-0613-0100 | 1 | 2-Pos JST VH [MH-FC] to 3.5mm Bullet [MH-FC] Adaptor (100mm Length) |
| 3801-0709-0600 | 1 | Encoder Cable, 600mm Length (4-Pos JST PH [MH-FC] to 4-Pos JST XH [MH-FC]) |
| 3217-2701-2501 | 1 | Compact ServoBlock® (27mm Width, For Standard Size H25T Spline Servo, Hub-Shaft) |
| 3613-0014-0096 | 2 | 3613 Series Gecko® Wheel (14mm Bore, 96mm Diameter) |
| 3624-4008-0032 | 2 | 32mm Omni Wheel (8mm REX™ Bore, 50A Durometer) |
| 5203-2402-0014 | 1 | Yellow Jacket Planetary Gear Motor (13.7:1 Ratio, 24mm Length 8mm REX™ Shaft, 435 RPM) |
If you want to build this exact robot, and don't care for the (large amount) of extra parts you get by buying the kits, then you can save about $300 by buying these parts individually. Just be prepared for a 75 line BoM :P
| SKU | QTY | Name |
|---|---|---|
| 1101-0005-0040 | 0.5 (1 total) | 1101 Series U-Beam (5 Hole, 40mm Length) |
| 1106-0007-0056 | 2 | 1106 Series Square Beam (7 Hole, 56mm Length) |
| 1120-0001-0048 | 1 | 1120 Series U-Channel (1 Hole, 48mm Length) |
| 1120-0008-0216 | 1 | 1120 Series U-Channel (8 Hole, 216mm Length) |
| 1120-0011-0288 | 2 | 1120 Series U-Channel (11 Hole, 288mm Length) |
| 1120-0014-0360 | 2 | 1120 Series U-Channel (14 Hole, 360mm Length) |
| 1121-0001-0048 | 2 | 1121 Series Low-Side U-Channel (1 Hole, 48mm Length) |
| 1121-0003-0096 | 1 | 1121 Series Low-Side U-Channel (3 Hole, 96mm Length) |
| 1121-0005-0144 | 1 | 1121 Series Low-Side U-Channel (5 Hole, 144mm Length) |
| 1121-0008-0216 | 2 | 1121 Series Low-Side U-Channel (8 Hole, 216mm Length) |
| 1121-0008-0216 | 2 | 1121 Series Low-Side U-Channel (8 Hole, 216mm Length) |
| 1123-0043-0048 | 1 | 1123 Series Pattern Plate (1 x 1 Hole, 43 x 48mm) |
| 1143-0003-0096 | 1 | 1143 Series Mini Low-Side U-Channel (3 Hole, 96mm Length) |
| 1143-0006-0168 | 1 | 1143 Series Mini Low-Side U-Channel (6 Hole, 168mm Length) |
| 1143-0017-0432 | 2 | 1143 Series Mini Low-Side U-Channel (17 Hole, 432mm Length) |
| 1201-0043-0002 | 10 | 1201 Series Quad Block Pattern Mount (43-2) |
| 1201-0043-0005 | 1 | 1201 Series Quad Block Pattern Mount (43-5) |
| 1205-0001-0005 | 3 | 1205 Series Dual Block Mount (1-5) - 2 Pack |
| 1205-0002-0001 | 3 | 1205 Series Dual Block Mount (2-1) - 2 Pack |
| 1309-0016-4008 | 2 | 1309 Series Sonic Hub (8mm REX™ Bore) |
| 1310-0016-4008 | 1 | 1310 Series Hyper Hub (8mm REX™ Bore) |
| 1500-0010-0004 | 0.16 (2 total) | 1500 Series Plastic Spacer (4mm ID x 6mm OD, 1mm Thickness) - 12 Pack |
| 1501-0006-0160 | 0.5 (2 total) | 1501 Series M4 x 0.7mm Standoff (6mm OD, 16mm Length) - 4 Pack |
| 1502-0006-0080 | 0.5 (2 total) | 1502 Series 4mm ID Spacer (6mm OD, 8mm Length) - 4 Pack |
| 1502-0006-0100 | 0.5 (2 total) | 1502 Series 4mm ID Spacer (6mm OD, 10mm Length) - 4 Pack |
| 1502-0006-0160 | 0.5 (2 total) | 1502 Series 4mm ID Spacer (6mm OD, 16mm Length) - 4 Pack |
| 1516-4008-0240 | 1 1516 Series | 8mm REX™ Standoff (M4 x 0.7mm Threads, 24mm Length) - 4 Pack |
| 1516-4008-0400 | 1.5 (6 total) | 1516 Series 8mm REX™ Standoff (M4 x 0.7mm Threads, 40mm Length) - 4 Pack |
| 1516-4008-0430 | 0.75 (3 total) | 1516 Series 8mm REX™ Standoff (M4 x 0.7mm Threads, 43mm Length) - 4 Pack |
| 1516-4008-0480 | 0.5 (2 total) | 1516 Series 8mm REX™ Standoff (M4 x 0.7mm Threads, 48mm Length) - 4 Pack |
| 1522-0010-0060 | 0.25 (1 total) | 1522 Series 8mm ID Spacer (10mm OD, 6mm Length) - 4 Pack |
| 1522-0010-0090 | 1 | 1522 Series 8mm ID Spacer (10mm OD, 9mm Length) - 4 Pack |
| 1601-0412-0006 | 2 | 6mm ID Flanged Ball Bearing (12mm OD, 4mm Thickness) - 2 Pack |
| 1611-0514-0006 | 2 | 1611 Series Flanged Ball Bearing (6mm ID x 14mm OD, 5mm Thickness) - 2 Pack |
| 1611-0514-0008 | 2 | 1611 Series Flanged Ball Bearing (8mm ID x 14mm OD, 5mm Thickness) - 2 Pack |
| 1611-0514-4008 | 2.5 (5 total) | 1611 Series Flanged Ball Bearing (8mm REX™ ID x 14mm OD, 5mm Thickness) - 2 Pack |
| 2000-0025-0002 | 1 | 2000 Series Dual Mode Servo (25-2, Torque) |
| 2000-0025-0003 | 1 | 2000 Series Dual Mode Servo (25-3, Speed) |
| 2106-4008-1920 | 1 | 8mm REX™ Shaft with E-Clip (Stainless Steel, 192mm Length) |
| 2110-0608-0002 | 4 | Shouldered 8mm REX Hub-Shaft (20mm Hub Offset) |
| 2302-0014-0100 | 1 | 2302 Series Aluminum, MOD 0.8, Hub Mount Gear (14mm Bore, 100 Tooth) |
| 2303-4008-0020 | 1 | 2303 Series Steel, MOD 0.8 Pinion Gear (8mm REX™ Bore, 20 Tooth) |
| 2320-4008-0024 | 8 | Clamping Steel Miter Gear (8mm REX™ Bore, 24 Tooth, MOD 1) |
| 2500-0014-0336 | 2 | Steel Viper-Slide (14-Ball Carriage, 336mm Length, 244mm Travel) |
| 2501-0001-0001 | 1 | Steel End-Stop for Viper-Slide (1-1) - 6 Pack |
| 2501-0001-0002 | 1 | Steel Pulley Bracket for Viper-Slide (1-2) - 4 Pack |
| 2800-0004-0006 | 0.16 (4 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (6mm Length) - 25 Pack |
| 2800-0004-0008 | 1.52 (38 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (8mm Length) - 25 Pack |
| 2800-0004-0010 | 1.6 (40 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (10mm Length) - 25 Pack |
| 2800-0004-0011 | 1.36 (34 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (11mm Length) - 25 Pack |
| 2800-0004-0012 | 1.6 (40 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (12mm Length) - 25 Pack |
| 2800-0004-0014 | 0.48 (12 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (14mm Length) - 25 Pack |
| 2800-0004-0020 | 0.16 (4 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (20mm Length) - 25 Pack |
| 2800-0004-0022 | 0.08 (2 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (22mm Length) - 25 Pack |
| 2800-0004-0025 | 0.08 (2 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (25mm Length) - 25 Pack |
| 2800-0004-0035 | 0.12 (3 total) | M4 x 0.7mm Zinc-Plated Socket Head Screw (35mm Length) - 25 Pack |
| 2822-0004-0010 | 0.64 (16 total) | Premium M4 Socket Head Thread-Locking Screw (10mm Length) - 25 Pack |
| 2802-0004-0005 | 0.52 (13 total) | 2802 Series Zinc-Plated Steel Button Head Screw (M4 x 0.7mm, 5mm Length) - 25 Pack |
| 2802-0004-0006 | 0.08 (2 total) | 2802 Series Zinc-Plated Steel Button Head Screw (M4 x 0.7mm, 6mm Length) - 25 Pack |
| 2802-0004-0008 | 0.24 (6 total) | 2802 Series Zinc-Plated Steel Button Head Screw (M4 x 0.7mm, 8mm Length) - 25 Pack |
| 2802-0004-0010 | 0.24 (6 total) | 2802 Series Zinc-Plated Steel Button Head Screw (M4 x 0.7mm, 10mm Length) - 25 Pack |
| 2802-0004-0012 | 0.16 (4 total) | 2802 Series Zinc-Plated Steel Button Head Screw (M4 x 0.7mm, 12mm Length) - 25 Pack |
| 2815-0004-0012 | 0.16 (4 total) | Zinc-Plated Steel Thread-Forming Socket Head Screw (M4 x 12mm Length) - 25 Pack |
| 2812-0004-0007 | 1.32 (33 total) | M4 x 0.7mm Zinc-Plated Steel Nylon-Insert Locknut - 25pk |
| 2807-0609-0250 | 0.16 (2 total) | 6mm ID Stainless Steel Shim (9mm OD, 0.25mm Thickness) - 12 Pack |
| 2807-0811-0500 | 0.75 (3 total) | 8mm ID Stainless Steel Shim (11mm OD, 0.50mm Thickness) - 12 Pack |
| 2924-1015-1000 | 1 | Cable-Carrier Chain (10mm x 15mm, 1 meter Length) |
| 3801-0613-0100 | 1 | 2-Pos JST VH [MH-FC] to 3.5mm Bullet [MH-FC] Adaptor (100mm Length) |
| 3801-0709-0600 | 1 | Encoder Cable, 600mm Length (4-Pos JST PH [MH-FC] to 4-Pos JST XH [MH-FC]) |
| 3217-0001-2501 | 1 | Compact ServoBlock® (43mm Width, For Standard Size H25T Spline Servo, Hub-Shaft) |
| 3217-2701-2501 | 1 | Compact ServoBlock® (27mm Width, For Standard Size H25T Spline Servo, Hub-Shaft) |
| 3421-0014-0060 | 1 | 2mm Pitch GT2 Hub-Mount Timing Belt Pulley (14mm Bore, 60 Tooth) |
| 3426-0006-0005 | 1 | 2mm Pitch GT2 Timing Belt (6mm Width, 5 Meter Cut-Length) |
| 3427-0002-0001 | 1.25 (5 total) | Timing Belt Idler Pulley for 2mm Pitch GT2, 6mm Width Belt - 4 Pack |
| 3613-0014-0096 | 2 | 3613 Series Gecko® Wheel (14mm Bore, 96mm Diameter) |
| 3624-4008-0032 | 2 | 32mm Omni Wheel (8mm REX™ Bore, 50A Durometer) |
| 3625-0202-0104 | 1 | GripForce™ Mecanum Wheel Set (Ø104mm, 40A Durometer Rollers) |
| 5203-2402-0014 | 1 | 435 RPM Yellow Jacket Planetary Gear Motor (13.7:1 Ratio, 24mm Length 8mm REX™ Shaft) |
| 5203-2402-0019 | 4 | 312 RPM Yellow Jacket Planetary Gear Motor (19.2:1 Ratio, 24mm Length 8mm REX™ Shaft) |
| 5203-2402-0051 | 1 | 117 RPM Yellow Jacket Planetary Gear Motor (50.9:1 Ratio, 24mm Length 8mm REX™ Shaft) |