Erik Lee February 11, 2013 Preliminary Design Review EN Embedded Systems Development Lab

Two modules will cooperatively monitor environmental attributes and report them to the web.

 Temperature  Humidity  Barometric Pressure  Water Level in a residential well

Check Tempurature Check Humidity Check Pressure Check Water Depth Report Changes

 Tempuarture/Humidity  MaxDetect 1-wire bus  Barometric Pressure  I 2 C bus  Rotational Encoder  Quadrature encoding  Raspberry PI  WiFi, I 2 C, GPIO

 Raspberry PI modules, SD cards, USB WiFi, Power Adapter  Temperature/Humidity sensor  Barometric Pressure sensor  Rotational Encoder, bearings, pulley, rope, floats, wooden structure  WiFi Router  Materials ordered online (ETA before March)

 C and Python programming languages  IDE included with Raspberry PI  Gspread library  Connect to Google spreadsheets  AdaFruit.com  Tutorials and examples

 Approach  Learn python ▪ Simple programs ▪ Interface with gspread (read and write from cells)  Assemble/Connect sensors as they arrive  Interface with sensors using Python or C  Combine project  Risk  Learning Python  Learning Raspberry PI  Time for materials to come

 W1 Project Idea  W2 Project Definition  W3 PDR  W4 Learn Python, Gspread, and Sensor Datasheet  W5 CDR, assemble well depth gauge  W6 Learn Raspberry PI  W7 – 13 Implement project  W14 Refine User Interface  W15 Final Presentation

 Microsoft Graphics  FunSpark.com  CUI.com  Adafruit.com