This week, the team worked hard to get through the first steps of seriously integrating the different components of the project into a cohesive data pipeline.
MeeDm wrote scripts for the RPI Hub to connect to the BLE Tags and read in service and characteristic data from them. Tarush worked on getting the web app reading the json file MeeDm’s code will fill with the sensor tag data as it streams in. Lucas got the tag dev kit advertising out and connecting to the hub via BLE.
With information actively being read by the hub through a bluetooth connection from the sensor tags and being piped to a file the webapp reads, we finally have an actual data pipeline! This week, we’ll build on top of this basic skeleton of a system and aim to have weight data from a load cell actively being displayed on the webapp in the form of a live graph. This will involve getting weight tag firmware reading values from our custom HX711 breakout board, hub software organizing those values into a json file, and the webapp reading from the file and converting the information into a live-updated graph.