Overview of Status of Analysis, Design, Fabrication, Tests, etc.
First batch of parts for weight-shifting mechanism and frame arriving this week. Stepper motor, stepper driver, beaglebone blue,.
Waiting for McMaster-Carr order for linear rods, 80/20 extrusions.
3D printed brackets to use temporarily to construct frame.
Analysis for major components complete, first iteration design complete, fabrication in progress, components integration will begin this week
Accomplishments from Previous Week
Finished coding sensor data for pitch/roll, implementing more complex physical models and filters for finding angles from accel/gyro.
3D printed brackets for use in constructing frame.
Performed analysis for which battery requirements we need.
3D printed the support attachment which will house bearings and will support weight to be moved across rails.
Created model and 3D print timing pulleys for weight shifting.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Redo laser cutting of support pieces for linear slider - need to scale down, Lasercamm scaled sketch up 50% for unknown reason. (Miguel, Kaveen)
Balance weight-shifting design (Miguel)
Assemble first revision of linear slider. (Kaveen, Miguel)
Integrate motors into linear slider. (Kaveen)
Control slider position from command line. (Alejandro, Mingyi)
Meet with Eric Lo of Calit2 to get advice on integrating RC transmitters. (Alejandro, Miguel, Mingyi)
Have RC transmitter picked out and ordered. (Alejandro, Mingyi)
Select and purchase battery and/or power supply, as well as components for buck converter circuit (All)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Sponsor was out of town this week so we didn't meet with him. He approved our purchase decisions last week that are currently arriving.
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Talk to Tom about finding scrap metal for frame. 80/20 extrusions (4/19)
Linear slider over-constrained, needs slots. Consider using delrin or roller bearings. (4/19)
Consider Gel-Pak for battery, similar to car battery with liquid instead of gel. (4/19)
3D printed pulleys will not be good for final design (4/19)
Ask Ian about components room. Leftover materials from previous projects (4/19)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Nothing since last time.
Risks and Areas of Concern
Accuracy of assembly of linear slider.
Additional lead time to purchase wires to connect Beaglebone to motor driver.
Resources or Information Required but not Available
Schedule
Upcoming milestone - first iteration of design.
Updated Gantt chart.
Budget (list amount spent and amount remaining)
Beaglebone Blue - $101.21
Motor + Driver - $69.71
Rods and extrusions - $129.62
Amount Remaining: 3678.31
Progress on Report and Webpage
Started working on standards section of report. Completed Impacts on Society SectionÂ