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HotSpot2D v1.0 $25.50US
2 - 6 : $24.22US ( save 5% )
7 - 19 : $22.94US ( save 10% )
20 + : $20.39US ( save 20% )
excl. sales tax

Remotely measure the surface temperature of the main object that is in the field of view of this sensor, as well as ambient temperature. Detects presence of humans, animals or other objects by spotting the heat it emits. Be there not or be I-CubeX-ed. Works really well as a respiratory sensor, ie. to detect breathing, if placed looking into the nose. A digital I2C sensor, that outputs high resolution, low-noise signals.

For a version with 8 of this type of sensors in one package, see the MoveAround. If you just need to know if there's somebody moving (or not) in a room, try the MoveOn.

Application examples

  1. Use for detecting visitors present and/or passing by an exhibit or through a walkway.
  2. Combine with a TapTiled floor, some MoveOn and/or ReachClose sensors and make sure every move of your visitor has an effect. The Flash + SeeLaser combo allows you to implement break-beams that could indicate borders or thresholds.
  3. Point the HotSpot2D in the direction of the air stream coming out of / going into the nose, and detect breathing in and out.
  4. For sleep research, combine with an Orient4D for body orientation, a BioEmo for skin conductance, a BioVolt for muscle contractions, and a BioBeat3D for heartbeat, blood oxygen level and skin temperature.

Technical specifications

Product HotSpot2D sensor
Version 1.0 (September 2016)
Sensing parameter temperature of a heat emitting object and ambient temperature
Sensing method infra-red radiation intensity sensor
Spectral range 5 to 14 m
Active volume 90 cone
Temperature range -70 to 380 C
Accuracy 0.5 C
Response time 0.1 s
Power supply 4.75 to 5.25 V DC, 5 mA at 5 V
Sensor dimensions 18 x 12 x 8 mm (0.71 x 0.47 x 0.31 inch)
Weight 12 g (0.42 oz), incl. cable
Cable 1.0 m (39 inch), shielded, red wire = power, thick black wire = ground, grey wire = I2C data (SDA), white wire = I2C clock (SCL), maximum extension 0.2 m (0.7 ft)
Connector male 1x4 plug with 4 pins in a row spaced 2.54 mm (0.100 inch)
Software support
  • Our EditorX software allows you to configure the digitizer to process and map the sensor data of multiple sensors simultaneously.

  • 18 Jan 2018: HotSpot2D v1.11 for MacOS and Windows from source code in Max. For multiple sensors or sensor outputs, run multiple instances of the application, each started in its own folder. Requires a digitizer with firmware v7.51 or higher, v7.33 or v6.33. Use together with Connect (MacOS / Windows).
  • 03 Nov 2017: HotSpot2D v1.10 for MacOS (Sierra or lower) and Windows from source code in Max. For multiple sensors or sensor outputs, run multiple instances of the application, each started in its own folder. Requires a digitizer with firmware v7.5, v7.3, v7.2, v6.3 or v6.2. Use together with Connect (MacOS / Windows).
  • On MacOS, if upon attempting to run the app a popup appears stating that the app is "damaged", type "sudo spctl --master-disable" in a terminal to bypass the Apple Gatekeeper. See also eg. this post.
Application notes
  1. Make sure the sensor is plugged into the digitizer with the red wire connected to power. Reversing the plug may cause damage to the sensor.
  2. Requires a digitizer with digital (I2C) ports, eg. the USB-microDig or the Wi-microDig.
  3. The default I2C address is 90 (0x5A). Both I2C lines have 10 kOhm pull-up resistors.
  4. Our software enables you to use most features of this sensor. In EditorX, use the method parameter to set the sensor to output (method #0-125) the temperature difference between the target object and the ambient environment (where the method number is used to scale the difference) or to output (method #127) the raw temperature value of the ambient environment or (method #126) of the target object.
  5. See the HotSpot2D function description in the firmware documentation for more details about the various methods available in host and standalone mode.
  6. For more technical specs, and to find out how to access the sensor data in detail, please consult this datasheet.
  7. The closer the object of interest, the more accurate will be the temperature measurement. Since the field of view is a cone, all the objects in its field of view contribute infra-red radiation that affect the temperature calculation, with the object in the centre of its field of view contributing the most.
  8. The sensor comes fitted with a 1x4 plug for use with a WiDig or a USB-microDig running firmware v7.51 or higher or firmware v7.33 but includes an extra 1x4 housing to modify the plug for use with a Wi-microDig running firmware v6.33. There's also the AdaptCableKit. Need it already fitted with a 2x4 plug ? Just ask us.

This page was updated on Monday 06 May 2019.
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