{"id":231,"date":"2021-11-21T02:11:29","date_gmt":"2021-11-21T02:11:29","guid":{"rendered":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/?p=231"},"modified":"2021-11-21T02:12:07","modified_gmt":"2021-11-21T02:12:07","slug":"lucass-status-report-11-20","status":"publish","type":"post","link":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/2021\/11\/21\/lucass-status-report-11-20\/","title":{"rendered":"Lucas’s Status Report: 11\/20"},"content":{"rendered":"

This week finally saw the completion of the full Tag to Hub pipeline. I mainly worked on the firmware required to make the DA14531 board report load cell values as a characteristic (a value sent through the bluetooth protocol to the rpi hub). I also developed the load cell weigh sensing to save values only if they surpassed a preset threshold. Next steps are to run a hardware timer that will report timestamps of when new weight values are added to the array of values – these represent individual “eating events” which the system will count and check for consistency.<\/p>\n

Finally, I re-designed our pcb’s based around the now-available DA14531 Bluetooth module ( basically a small package consisting of the DA14531 chip, a 1 MB SPI Flash, and an antenna with a pre-made CLC filter). The schematics are fully finished and the layout is “near-done” (as in: I expected to etch it out today but it’ll have to wait until tomorrow).\u00a0\"\"Making PCB’s in-house means they have to be CNC milled – i.e. they can only be single-layer boards. Not having multiple layer to route through definitely adds to the challenge of creating a complex, multi-component design, but I’m managing it. <\/span><\/p>\n

\"\"<\/p>\n

I expect to have a functional pcb in my hands tomorrow (Sunday).<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

This week finally saw the completion of the full Tag to Hub pipeline. I mainly worked on the firmware required to make the DA14531 board report load cell values as a characteristic (a value sent through the bluetooth protocol to the rpi hub). I also developed the load cell weigh sensing to save values only … <\/p>\n

Continue reading “Lucas’s Status Report: 11\/20”<\/span><\/a><\/p>\n","protected":false},"author":283,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[11,10],"tags":[15],"_links":{"self":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/posts\/231"}],"collection":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/users\/283"}],"replies":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/comments?post=231"}],"version-history":[{"count":1,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/posts\/231\/revisions"}],"predecessor-version":[{"id":234,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/posts\/231\/revisions\/234"}],"wp:attachment":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/media?parent=231"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/categories?post=231"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/f21-teama5\/wp-json\/wp\/v2\/tags?post=231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}