Thanks to IOTA.ECO/IOTA Sandbox for using with MaM
1. Install Arduino IDE
2. Connect Arduino Uno to Laptop through USB
3. Connect Soil Moisture Sensor to AO in Arduino
4. Arduino IDE - Connect to port and select device unter Tool tab
5. Arduino IDE - Run StandardFirmata from File->Examples->Firmata->StandardFirmata
6. Install nodejs
7. Create a folder with master .js file
a. Clone and npm Install iota.lib.js files from https://github.com/iotaledger/iota.lib.js#gettransfers
b. Clone and npm install johnny-five from https://github.com/rwaldron/johnny-five
c. Clone mam.client.js from https://github.com/iotaledger/mam.client.js
8. Open nodejs cmd: Go to master file directory and run "node index.js"
9. Program should start attaching sensor data to Tangle
10. Copy paste from the console "https://thetangle.org/YourInitialRoot" to view it on Tangle