==== Meeting Minutes March 14, 2021 ==== **Attended: Lauryn, Francis, Brian, Thiri, Yin** === Updates === * 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: {{ :weatherbox:bumblebee:image.png?600 |}} ===To Do=== * 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 ==== Meeting Minutes March 28, 2021 ==== **Attended: Lauryn, Francis, Brian, Thiri, Yin** === Updates === * 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 === To Do === * Continue design in pspice * Research on Many-to-One Network * Attempt to set up XBee as many-to-one network ==== Meeting Minutes March 29, 2021 ==== **Attended: Lauryn, Francis, Brian, Thiri, Yin** === Updates === * Worked on CDR presentation * Meeting up in lab on Friday, April 2nd, from 9am - 1pm * cancelled lab on Sunday, April 4th. === To Do === * research on many-to-one network * Finish creating pspice design and simulation * attempt to do many-to-one network with all three XBees