Sprocket Parts
All of the materials to build your own robotic dog are listed below. They can be easily aquired from local and online sources. Kits are available at the Hardy Automation Store
Links below for individual hardware parts from Amazon are affiliate links. I recieve a small commission if you purchase these parts using my links.
As of May 2022, in the US, The total cost of all components, excluding the parts for the head (cameras) and back (speaker, E-Stop, and switch), if purchased individually, totals approximately $1000 before adding shipping and taxes.
3D printed parts
The following parts are 3D printed. All parts can be printed with PLA plastic on a standard desktop 3D printer. Some parts recommend using PETG plastic or resin printing, this is optional.
The color code column corresponds to the colors of the shown model, where "A" is white, "B" is grey, and "C" is black. Feel free to use your own color scheme. Recommended filament:
Parts will need to be rotated in 3D printing slicer software.
3D Printed Parts List
| QTY | Part Name | Infill | Color | Notes |
|---|---|---|---|---|
| 1 | Circuit Mount | 50% | C | |
| 1 | Circuit Cover | 50% | C | |
| 2 | Battery Holder | 50% | C | For Tenergy 3S LiIon Battery Pack |
| QTY | Part Name | Infill | Color | Notes |
|---|---|---|---|---|
| 4 | Calf | 40% | C | |
| 4 | Calf Bushing | 100% | C | |
| 4 | Thigh Outer | 50% | A | Right and Left variants |
| 2 | Thigh Inner - Left | 50% | A | |
| 2 | Thigh Inner - Right | 50% | A | |
| 16 | Thigh Spacer | 100% | A | Recommend print with small nozzle or SLA |
| 4 | Servo Horn | 100% | B | Recommend print with PETG or SLA, Print spares. |
| 4 | Servo Horn Spacer | 100% | A | |
| 4 | Shoulder | 100% | B | |
| 4 | Inside Hip | 80% | B | |
| 4 | Outside Hip | 80% | B |
| QTY | Part Name | Infill | Color | Notes |
|---|---|---|---|---|
| 1 | Head | 40% | C | Use with cameras and microphone |
| 1 | Face | 50% | A | Use with cameras and microphone |
| Part Name | Notes |
|---|---|
| All files (ZIP) | Includes optional accessories |
Hardware parts
The following hardware parts are needed to build the robotic dog. This hardware list does not include parts required for the head (cameras) and back (speaker, E-Stop, and switch). Additional hardware that comes included with the A1-16 servos is not listed.
Hardware Parts List
| QTY | Part Name | Source |
|---|---|---|
| 12 | A1-16 Servo | RobotShop |
| 12 | 625 Bearing | Amazon |
| 8 | M3 Rose Bearing | Amazon |
| 4 | M3 Threaded rod, ~30mm | Amazon |
| 4 | M3 Threaded Insert | Amazon |
| 12 | M3x8 Screw | Amazon |
| 18 | M5x10 Screw | Amazon |
| 4 | M5x20 Screw | Amazon |
| 8 | M3 Nut | Amazon |
| 4 | M5 Nut | Amazon |
| 4 | M5 Lock Nut | Amazon |
| 32 | M2 washers | Amazon |
| 1 | Adhesive gripper pad | Amazon |
| 8 | Zip Tie (4") | Amazon |
| 1 | 1 foot (254mm) 2020 aluminum extrusion | McMaster |
| 7 | T-slot End-Feed Double Nut, M5 Thread | McMaster |
Electronic parts
The following electronic parts are needed to build the robotic dog. This list does not include parts required for the head/cameras.
Electronic Parts List
| QTY | Part Name | Source |
|---|---|---|
| 1 | Sprocket PCB | See Circuit Board Assembly page |
| 1 | Raspberry Pi Computer | |
| 2 | 10.8V 3s LiIon Battery | Tenergy |
| 2 | XT Battery Connectors | Amazon |
| 1 | Terminal Post Kit | Amazon |
| 1 | Self-Locking Push Button Switch | Amazon |
| 1 | Header Strips | Amazon |
| 1 | Voltage Regulator (D36V28F5) | Pololu |
| 1 | IMU (BNO055) | Amazon |
| 1 | 3W 8ohm Speaker | Amazon |
| 1 | 3W Power Amplifier Board PAM8403 | Amazon |
| 1 | 3.5mm male plug to bare wire | Amazon |
| 1 | Level Shifter Board | Amazon |
| 1 | 16AWG wire | Amazon |