Fido, the temperature alarm that sends text messages

Tool Concept


Is your greenhouse getting frosty? How about too hot today? Is your fridge still on? Fido is a temperature alarm that will send you text messages that you can build for around $100. Solder together the Arduino based model or snap together the Raspberry Pi based model.
R.J. Steinert's picture
Feel free to comment to ask me questions :-)
Documentation Wiki: 

Fido is a DIY electronic tool that can monitor greenhouse temperature, record greenhouse data, and alert the farmer to problems in the greenhouse via cell phone text message and email. This tool is much more affordable than commercially available greenhouse alarms. Fido has been tested by several farmers to ensure that it is accessible and appropriate for various operations.

There are two Fido models. 

  • Fido WiFi:
    • Works only where there is a power source and within 100 feet from Internet source. Expandable up to a mile using a Wifi Bridge.
    • $118 in parts.
    • Does not require soldering, pieces snap together.
    • Configured using a wizard on the device.
  • Fido Cellular:
    • Runs on a battery for weeks, sends text messages anywhere there is cellphone reception.
    • $127 in parts.
    • Requires soldering skills.
    • Configured by text messaging your Fido Cellular.

Build a Fido Cellular

To build a Fido Cellular, check out this guide.

Build a Fido WiFi

To build a Fido WiFi, find the documentation on Github here. It's a Raspberry Pi project!


- Fido Wifi Step 1: Getting Started

- Fido Wifi Step 2: Configuring a Raspberry Pi to send temperature alerts via text message






R.J. Steinert's picture
Feel free to comment to ask me questions!
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