SPARKY v1.0: An Open Academic Robotics Platform

Update 2024.07.14: See Sparky 1.2 for the current version.

For reference only:

Sparky v1.0

SPARKY  (Saint Paul Academic Robotics Kit) is an open academic robotics platform. It is user-assembled from maker space manufactured parts and widely available commercial off-the-shelf parts.  It is designed to be used to introduce the basics of robotics in an academic setting.  

This is the base model. Other accessories are listed separately - including mini servo mounts, IR sensor mounts, color sensor mount, ultrasonic sensor mount, neopixel nimbus, and test stand.

The configuration shown is based on the Adafruit Feather microcontroller, but the platform is designed to be microcontroller agnostic. Raspberry Pi Pico W and Arduino reference configurations are also possible.

SPARKY Features:

• Makerspace manufacturable parts (3D printed PLA and laser-cut plywood) with files freely available online
• Widely available commercially sourced parts - no vendor lock-in
• Microcontroller agnostic (Current design is Adafruit Feather-based. Raspberry Pi Pico and Arduino reference designs are possible) 
• Easy to assemble with only M3 screws using a hex driver or hex key and a nut driver 
• Modular and Reconfigurable:  attach different combinations of attachments (sensors & effectors) in different positions and configurations
• Extendable: easy to add new accessories, actuators, and sensors with the standardized M3 mounting hole pattern.
• Eco-sustainability considerations: Minimize plastic,  print with bioplastic, use of renewable resources (plywood)
• Handle for easy transfer from desktop to testing environment
• Latching hinged lid for easy access to electronics and wiring
• Easily identifiable and accessible power buttons
• Sensors, actuators and effectors:
  • Ultrasonic rangefinder
  • IR reflective sensors (x2) for line following
  • Color sensor
  • Micro Servo
  • TT Geared DC Motors (x2) with wheels
  • Axle encoders (x2)
  • Neopixel strips

Files:

The base model includes the following SVG files to be laser cut from 3mm (1/8") baltic plywood or similar:

• SparkyBase
• SparkyLid
• PowerPanel - labeled
• Button Wrench (optional)

The base model includes the following models to be 3D printed.  

• Motor mounts (2 mounts - mirrors of each other for L & R sides)
• Battery mount
• Breadboard tabs (2)
• Lid Hinges (2x)
• Lid Latch Legs (2x)
• Lid Latch Shoes (2x)
• Handle with power panel
• Nimbus (Neopixel mount)

Additional Materials:

• Tools for assembly: 2.5mm hex driver & 5.5mm nut driver
• 5/8" transfer bearings (2x) (nylon or steel; bearing & housing height is 5/8", bearing itself is ~½)
• TT geared DC motors 3-6v (2x )
• Half-breadboard
• Cylindrical 3.7v LiPo battery
• 2x 12mm Mini Latching Push Buttons
• Photo interrupter sensors (2x )
• Neopixel strip (~243mm)
• M3 hex cap screws & nuts - assorted lengths
•  

Slicer Settings:

Models were printed on a Bambu X1C in PLA at 0.2mm layer height, the “strength” setting, and no supports

Laser:

Models were cut from 3mm Baltic Birch B/BB plywood on a Glowforge Pro.

Assembly:

• Assemble the robot as shown using M3 screws and nuts. Required tools: 2.5mm hex driver and 5.5mm nut driver.
• See Instructable for detailed assembly instructions

See Also:

• SPARKY sensor mounts
• SPARKY micro servo mounts
• SPARKY test stand
• SPARKY dowel holder