Affordable thermal imaging

IR-Blue A thermal imaging smartphone accessory

The IR-Blue is an affordable thermal imaging accessory for iPhone and Android Devices.
See the world in a new way.
The IR-Blue lets you see the temperature of things around you. It uses a 64 zone non-contact InfraRed sensor array to read the temperature of what you are viewing. The IR-Blue connects using Bluetooth to your iPhone or Android device to show the temperature readings as colors on the screen.
The IR-Blue supports Bluetooth 2 and Bluetooth 4 BLE. It works with the iPhone 4S, 5, the New iPads and the 5th gen iPod Touch. It also works with Android 2.3 and newer devices with at least 480 x 800 resolution displays. (Bluetooth 4.0 is not officially supported by Android yet, when the bluetooth 4.0 drivers are stable we will support it for Android also.)
Gizmodo - "Awesome Thermal Imager Turns Your iPhone or Android Into the Predator’s Eyes"

Engadget - "The secret to turning smartphones into super-cheap thermal imaging hardware"

PetaPixel - "Instantly turns the iPhone into a cheap thermal imaging camera"

HackADay - "Perfect for looking for cold drafts in an old house"

Hacked Gadgets - "I can see many home owners purchasing one to see where their insulation could be improved"

Phone Arena - "Here's an invention that you don't see every day"

The Apps for iPhone and Android will be available in the Apple App Store and the Google Play Store for free. 
iPhone App
Developed by RH-Workshop.

Android App
FIR screen shot 1
Developed by MarDaSo.

This is an 
Open Source Hardware project. The source code for iPhone, the firmware and Eagle design files for for the Bluetooth 4 version are available now at


  • 64 Zone Infrared Temperature sensor
  • The sensor is factory calibrated for -20 to 300 ˚C (-4 to 572 ˚F)
  • The sensor temperature range is -50 to 300 ˚C
  • Sensor Field of View (FOV) 60˚ by 16.4˚
  • (NETD) 0.25K rms 
  • Dual mode Bluetooth 2 and 4 wireless connectivity for Android and iPhone iOS devices.
  • PC, Mac or anything that supports Bluetooth can be used with your custom application.
  • Uses 4 AAA batteries
The usable distance of the sensor is based on the Field of View (FOV). Each zone or "pixel" has a FOV of 3.75˚ x 3.75˚. At 1 meter the pixel shows the average temperature of a square 65mm x 65mm and at 10 meters it would be 65cmx65cm. In inches - at 12 in the square would be about 0.78 in x 0.78 in. At 30 ft it would be almost 2ft x 2ft.