Caitlin Quintero Weaver
Published © Apache-2.0

SOS via SMS... from a Freezer: Commercial Freezer Monitor

Build a smart commercial freezer monitor with temperature logging and SMS alerts to prevent product loss.

BeginnerFull instructions provided1 hour2,716
SOS via SMS... from a Freezer: Commercial Freezer Monitor

Things used in this project

Hardware components

Resistor 10k ohm
Resistor 10k ohm
×1
Breadboard (generic)
Breadboard (generic)
×1
Magnetic contact switch
×1
Texas Instruments TI LMT84 Analog Temperature Sensor
×1
Arduino Yun
Arduino Yun
×1

Software apps and online services

Temboo
Temboo
SMS Messaging API
Twilio SMS Messaging API
AWS DynamoDB
Amazon Web Services AWS DynamoDB

Story

Read more

Schematics

Step 1: Hooking Up Power

Connect the Arduino’s GND pin to the breadboard’s ground bus strip. Connect the 3.3v pin to the voltage supply bus strip.

Step 2: Connecting the Temperature Sensor

Connect the left leg of the TI LMT84 to voltage, and the right leg to ground. Next, connect the middle leg to the analog A0 pin.

Step 3: Connecting the Door Sensor

On the breadboard, connect one leg of the door sensor (the magnetic contact switch) to digital pin 7 through a 10KΩ resistor. Connect the other leg of the door sensor to ground.

Code

Github

https://github.com/caitlinweaver-temboo/AnatomyOfIoT

Credits

Caitlin Quintero Weaver

Caitlin Quintero Weaver

1 project • 5 followers
I'm on the product outreach team at Temboo. I love to learn and am usually reading at least 3 books at a time.

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