Attended: Lauryn, Francis, Brian, Thiri, Yin

• Traced & debug v4.1
  • identified and confirmed that we used the wrong capacitors - C4, C9, C10, C11 (used 10uF instead of 0.1uF)
• Reorganized bumblebee inventory
• Got help from professor Weldon (looked at Volt. reg. schematic for v4.1)
• Identified that feedback is not connected to Vout
  • Cannot verify that capacitor 5 (C5) is connected to Vout (Schematic does not show that)
  • Adding the Jumper wire causes issues with C2 and C5
    • Suggested by manufacturer: use 1.0uF, 10uF and 8.2pF that is separated to have a different output freq. (looking at XBee Schematic)
    • instead we have C1 = 1.0uF, C15 = 18pF on our board
    • As reference:

• Solder the correct capacitors for v4.1
• Download Pspice
  • Stimulate voltage reg. and download library/parts
  • Stimulate ideal situation
  • Stimulate non-ideal situation to get close to 5V
    • Min value: 1/2x cap. value
    • Max Value: 2x Cap. value
• Continue to trace/debug for any more problems
• Create new/update schematic for new version of v4.1
• Range test v4.0 w/o voltage reg. and compare
• Test v4.0 w/ other hardware teams

Attended: Lauryn, Francis, Brian, Thiri, Yin

• Backed up Bumblebee files from computer lab onto Spring 2021 bumblebee google drive folder
• Worked on v4.1 in pspice; creating simulation design
• attempted to configure many to one network
• Links for Many-to-One research:
  • https://www.instructables.com/XBee-Mesh-Network-Construction/
  • https://www.digi.com/resources/documentation/digidocs/pdfs/90001526.pdf
  • https://www.digi.com/resources/documentation/digidocs/pdfs/90001942-13.pdf
  • https://www.digi.com/resources/documentation/Digidocs/90001942-13/concepts/c_many_to_one_routing.htm#:~:text=Many%2Dto%2Done%20routing%20is,network%20traffic%20congestion%20is%20minimized.
  • https://www.digi.com/support/productdetail?pid=5627&type=documentation
  • https://www.digi.com/resources/documentation/Digidocs/90001506/Default.htm#concepts/c_dm_network_id.htm?TocPath=Networking%257C_____1

• Continue design in pspice
• Research on Many-to-One Network
• Attempt to set up XBee as many-to-one network

Attended: Lauryn, Francis, Brian, Thiri, Yin

• Worked on CDR presentation
• Meeting up in lab on Friday, April 2nd, from 9am - 1pm
• cancelled lab on Sunday, April 4th.

• research on many-to-one network
• Finish creating pspice design and simulation
• attempt to do many-to-one network with all three XBees

Contributing authors:

Created by lcorpuz on 2021/03/14 22:27.