Field Sensor

[dwblair]

Key Components

Device

• Senses “something”, doesn’t really matter what so long as it’s relevant. Temperature sounds good to me, though doing two channels at once would also be cool (temp + humidity)
• Standardize output within the sketch

Application

• HTML5 based with plugins to stream and POST destination
• Include ‘save to file’ option for when no data connection present

Database

• Already have ThingSpeak server in works, so use that
• Place holders for COSM and Nimbits to start

Growth Plans

Application platform growth plan

• Chrome Canary on Mac/Windows (pure HTML5): version 0.1, for developing basics
• Android via Phonegap plugin: version 0.8, almost ready for primetime, shows proof of concept on one major platform
• iPhone via Phonegap plugin: version 1.0. covers both major mobile platforms
• available only via jailbroken devices
• app in Apple Appstore can wait; may need to charge a nominal fee to pay for the hassle of going through the approval process (assuming it gets approved)

Options growth plan

• raw input displayed on screen (1 channel)
• save input to SD card
• raw input POSTed to ThingSpeak (1 channel)
• along with geo data (lat + long + alt)
• every 5 seconds
• take average of readings for period

------------ V.1 --------------

• user configurable sample rate
• user configurable sampling method (mean, median, mod, min or max)
• Label for input (to place context for the units on screen)
• Support for multiple data streams at once
• Nimbits support
• COSM support
• “Manual Sample” button: press and hold on screen to ‘sniff’ the data for as long as you want to record, display result (graphically and average numeric value), option to send or resample