156B Week 1

Updates since Fall Quarter

• FarmBot hardware was delivered to San Diego from Sponsor

• Acquired new power tools

• In need of soldering iron

Current Concerns (decreasing priority)

• Set up the Stepper Motors and synchronize them

• Modifying the code to adjust to stepper motors

• Testing the code to the hardware

• How do we power the end effector?

• Stabilizing the Z-axis

• Cable material - remove the crimping

Short term milestones

• • • UTM Function

      • Identify the functions that don’t work with cable system (by testing them)

      • Design something you think might solve this

      • Test your design (e.g. with a prototype)

    • UTM Positioning

      • Design cable positioning system

      • Test positioning accuracy w/out UTM

      • Test positioning accuracy w/ UTM

      • Test positioning accuracy w/ UTM connected

    • Systems Integration

      • Document

        • Change in system lifetime, operating conditions

        • Changes in components/wiring, position of electronics box, solenoid valve, etc.

Upcoming Goals

Weeks 1-3 Winter Quarter

Motors

• Look into how to synchronize multiple arduinos

  • Integration of aerial motor system into existing linear FarmBot code

  • Modify code for integration with Stepper Motors

• Reiterate testing of motor code on existing small scale prototype

• Modify function of motors within the small scale design

Universal Tool Mount

• Draw a free body diagram and calculate reaction forces

  • Finalize the FBD from last quarter

• Design Universal Tool Mount connection to the cables

Small Scale Prototype

• Buy new materials for cables and readjust configuration of spools and pulleys based on observations from risk reduction

Budget

Balance as of 12/11/2020: $2429.58