# Adafruit TMP007 Sensor Breakout ## Overview ![](https://cdn-learn.adafruit.com/assets/assets/000/018/631/medium800/sensors_2023iso_ORIG.jpg?1407254320) Unlike most of the other temperature sensors we have, this breakout has a really cool IR sensor from TI that can measure the temperature of an object without touching it. The TMP007 is the latest thermopile sensor from TI, and is an update of the [TMP006](https://www.adafruit.com/product/1296). The internal math engine does all the temperature calculations so its easier to integrate - you can read the die and target temperatures directly over I2C. The TMP007 also has better transient management, so you don't get as much over/undershoot when the temperature changes a lot. ![](https://cdn-learn.adafruit.com/assets/assets/000/018/632/medium800/sensors_2023quarter_ORIG.jpg?1407254333) Simply point the sensor towards what you want to measure and it will detect the temperature by absorbing IR waves emitted. The embedded thermopile sensor generates a very very small voltage depending on how much IR there is, and using some math, that micro voltage can be used to calculate the temperature. It also takes the measurement over an area so it can be handy for determining the average temperature of something. ![](https://cdn-learn.adafruit.com/assets/assets/000/018/633/medium800/sensors_2023kit_ORIG.jpg?1407254345) This sensor comes as a ultra-small 0.5mm pitch BGA, too hard to solder by hand. So we stuck it on an easy-to-work-with breakout board. The sensor works with 2.5V to 5V logic so it requires no logic level shifting. There are two address pins and using a funky method of connecting the pins you can have up to 8 TMP007's connected to one i2c bus. We also include a small piece of 0.1" breakaway header so you can easily solder to and use this sensor on a breadboard. Two mounting holes make it easy to attach to an enclosure. # Adafruit TMP007 Sensor Breakout ## Pinouts ![](https://cdn-learn.adafruit.com/assets/assets/000/018/634/medium800/sensors_pinouts.jpg?1407254418) The TMP007 is a very straight-forward sensor, lets go thru all the pins so you can understand what you need to connect to get started # Power Pins - **VCC** - This is the positive power and logic level pin. It can be 2.2-5.5VDC, so fine for use with 3 or 5V logic. Power VCC with whatever logic level you plan to use on the i2c lines. - **GND** - this is the ground power and logic reference pin. # I2C Data Pins - **SCL** - this is the I2C clock pin. There's a 10K pull-up already on the board, so connect this directly to the i2c master clock pin on your microcontroller - **SDA** - this is the I2C data pin. There's a 10K pull-up already on the board, so connect this directly to the i2c master data pin on your microcontroller # Optional Pins These are pins you don't need to connect to unless you want to! - **Alert** - This is the interrupt/alert pin from the TMP007. The chip has some capability to 'alert' you if the chip temperature goes above or below a set amount. This output can trigger to let you know. We don't have library support for this pin, so check the datasheet for more information. - **AD0 AD1** - These are the address select pins. Since you can only have one device with a given address on an i2c bus, there must be a way to adjust the address if you want to put more than one TMP on a shared i2c bus. The AD0/AD1 pins set the bottom three pins of the i2c address. There are 10K pull-down resistors on the board. The default address of the TMP007 is **0x40**. By connecting the address pins as in the following table, you can generate any address between 0x40 and 0x47![](https://cdn-learn.adafruit.com/assets/assets/000/018/637/medium800/sensors_addr.png?1407259939) # Adafruit TMP007 Sensor Breakout ## Assembly ![](https://cdn-learn.adafruit.com/assets/assets/000/018/640/medium800/sensors_2023kit_ORIG.jpg?1407260159) ## Prepare the header strip: Cut the strip to length if necessary. It will be easier to solder if you insert it into a breadboard - **long pins down** ![sensors_header.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/641/medium640/sensors_header.jpg?1407260170) ## Add the breakout board: Place the breakout board over the pins so that the short pins poke through the breakout pads![sensors_place.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/642/medium640/sensors_place.jpg?1407260187) ## And Solder! Be sure to solder all pins for reliable electrical contact. _(For tips on soldering, be sure to check out our_ [_Guide to Excellent Soldering_](http://learn.adafruit.com/adafruit-guide-excellent-soldering)_).__._![sensors_solder1.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/643/medium640/sensors_solder1.jpg?1407260197) ![sensors_solder2.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/644/medium640/sensors_solder2.jpg?1407260203) ![sensors_solder3.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/645/medium640/sensors_solder3.jpg?1407260230) You're done! Check your solder joints visually and continue onto the next steps ![sensors_done.jpg](https://cdn-learn.adafruit.com/assets/assets/000/018/646/medium640/sensors_done.jpg?1407260279) # Adafruit TMP007 Sensor Breakout ## Arduino # Arduino Wiring You can easily wire this sensor to any microcontroller, we'll be using an Arduino ![](https://cdn-learn.adafruit.com/assets/assets/000/018/647/medium800/sensors_wiring.jpg?1407260433) - Connect **Vdd** to the power supply, 3V or 5V is fine. Use the same voltage that the microcontroller logic is based off of. For most Arduinos, that is 5V - Connect **GND** to common power/data ground - Connect the **SCL** pin to the I2C clock **SCL** pin on your Arduino. On an UNO & '328 based Arduino, this is also known as **A5** , on a Mega it is also known as **digital 21** and on a Leonardo/Micro, **digital 3** - Connect the **SDA** pin to the I2C data **SDA** pin on your Arduino. On an UNO & '328 based Arduino, this is also known as **A4** , on a Mega it is also known as **digital 20** and on a Leonardo/Micro, **digital 2** The TMP007 has a default I2C address of **0x40** but you can set the address to any of 8 values between 0x40 and 0x47 so you can have up to 8 of these sensors all sharing the same SCL/SDA pins. # Download Adafruit\_TMP007 To begin reading sensor data, you will need to download the  **Adafruit TMP007 ** library from the Arduino library manager. Open up the Arduino library manager: ![](https://cdn-learn.adafruit.com/assets/assets/000/084/396/medium800/sensors_1library_manager_menu.png?1573954307) Search for the  **Adafruit TMP007 ** library and install it ![](https://cdn-learn.adafruit.com/assets/assets/000/084/397/medium800/sensors_tmp007.png?1573954346) We also have a great tutorial on Arduino library installation at: [http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use](http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use "Link: http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use") # Load Demo Open up **File-\>Examples-\>Adafruit\_TMP007**** -\>tmp007** and upload to your Arduino wired up to the sensor ![](https://cdn-learn.adafruit.com/assets/assets/000/018/654/medium800/sensors_tmp007demo.png?1407260872) Thats it! Now open up the serial terminal window at 9600 speed to see the temperature in real time. You can try putting your hand or a cold glass of water over the sensor (not touching) to see the thermopile sensor adjust! ![](https://cdn-learn.adafruit.com/assets/assets/000/018/658/medium800/sensors_temps.png?1407261319) Library Reference The TMP007 library is pretty straight forward! Start by creating the Adafruit\_TMP007 object with: ``` Adafruit_TMP007 tmp007; ``` Or with an i2c address assigned ``` Adafruit_TMP007 tmp007(0x41); // start with a diferent i2c address! ``` Then you can initialize & configure ``` tmp007.begin() ``` or, to set the samples/reading with: ``` tmp007.begin(TMP007_CFG_1SAMPLE) ``` We suggest the default, 16 samples for best accuracy. **begin()** will return true or false based on whether it found the sensor, check it using an if statment like so: ``` if (! tmp007.begin()) { Serial.println("No sensor found"); while (1); } ``` Now you can read the Die temperature (the temperature of the physical sensor itself) and Object temperature (the temperature of the stuff in front of the sensor) ``` tmp007.readObjTempC(); tmp007.readDieTempC(); ``` The readings are floating point values, in degrees C. Then wait 4 seconds between readings to get a new reading! ``` delay(4000); // 4 seconds per reading for 16 samples per reading ``` # Adafruit TMP007 Sensor Breakout ## Python & CircuitPython It's easy to use the TMP007 sensor with Python or CircuitPython and the [Adafruit CircuitPython TMP007](https://github.com/adafruit/Adafruit_CircuitPython_TMP007) module.  This module allows you to easily write Python code that reads the temperature from the sensor. You can use this sensor with any CircuitPython microcontroller board or with a computer that has GPIO and Python [thanks to Adafruit\_Blinka, our CircuitPython-for-Python compatibility library](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux). # CircuitPython Microcontroller Wiring First wire up a TMP007 to your board exactly as shown in the previous pages for Arduino. Here's an example of wiring a Feather M0 to the sensor with I2C: - **Board 3V** to **sensor VCC** - **Board GND** to **sensor G** - **Board SCL** to **sensor SCL** - **Board SDA** to **sensor SDA** ![sensors_FeatherM0_TMP007_bb.jpg](https://cdn-learn.adafruit.com/assets/assets/000/059/048/medium640/sensors_FeatherM0_TMP007_bb.jpg?1534014616) # Python Computer Wiring Since there's _dozens_ of Linux computers/boards you can use we will show wiring for Raspberry Pi. For other platforms, [please visit the guide for CircuitPython on Linux to see whether your platform is supported](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux).  Here's the Raspberry Pi wired with I2C: - **Pi 3V3** to **sensor VIN** - **Pi GND** to **sensor GND** - **Pi SCL** to **sensor SCK** - **Pi SDA** to **sensor SDA** ![sensors_raspi_tmp007_i2c_bb.jpg](https://cdn-learn.adafruit.com/assets/assets/000/059/049/medium640/sensors_raspi_tmp007_i2c_bb.jpg?1534015344) # CircuitPython Installation of TMP007 Library You'll need to install the [Adafruit CircuitPython TMP007](https://github.com/adafruit/Adafruit_CircuitPython_TMP007) library on your CircuitPython board. First make sure you are running the [latest version of Adafruit CircuitPython](https://learn.adafruit.com/welcome-to-circuitpython/installing-circuitpython) for your board. Next you'll need to install the necessary libraries to use the hardware--carefully follow the steps to find and install these libraries from [Adafruit's CircuitPython library bundle](https://github.com/adafruit/Adafruit_CircuitPython_Bundle/releases).  Our Welcome to CircuitPython guide has [a great page on how to install the library bundle](https://learn.adafruit.com/welcome-to-circuitpython/circuitpython-libraries). For non-express boards like the Trinket M0 or Gemma M0, you'll need to manually install the necessary libraries from the bundle: - **adafruit\_tmp007.mpy** - **adafruit\_bus\_device** Before continuing make sure your board's lib folder or root filesystem has the  **adafruit\_tmp007.mpy,** and **adafruit\_bus\_device****   **files and folders**  **copied over. Next[ connect to the board's serial REPL](https://learn.adafruit.com/welcome-to-circuitpython/the-repl) so you are at the CircuitPython  **\>\>\>**  prompt. # Python Installation of TMP007 Library You'll need to install the Adafruit\_Blinka library that provides the CircuitPython support in Python. This may also require enabling I2C on your platform and verifying you are running Python 3. [Since each platform is a little different, and Linux changes often, please visit the CircuitPython on Linux guide to get your computer ready](https://learn.adafruit.com/circuitpython-on-raspberrypi-linux)! Once that's done, from your command line run the following command: - `sudo pip3 install adafruit-circuitpython-tmp007` If your default Python is version 3 you may need to run 'pip' instead. Just make sure you aren't trying to use CircuitPython on Python 2.x, it isn't supported! # CircuitPython & Python Usage To demonstrate the usage of the sensor we'll initialize it and read the die temperature and object temperature from the board's Python REPL. First, run the following code to import the necessary modules and initialize the I2C connection with the sensor: ``` import board import busio import adafruit_tmp007 i2c = busio.I2C(board.SCL, board.SDA) sensor = adafruit_tmp007.TMP007(i2c) ``` Now you're ready to setup the sensor and read the values using these properties: - **die\_temperature** - reads sensor die temperature and return its value in degrees Celsius. - **temperature** - reads the object temperature and returns it's value in degrees Celcius. For example, to print the die temperature and object temperature: ``` print('Die temperature: {0:0.3F}*C'.format(sensor.die_temperature)) print('Object temperature: {0:0.3F}*C'.format(sensor.temperature)) ``` ![](https://cdn-learn.adafruit.com/assets/assets/000/059/050/medium800/sensors_TMP007REPLprintoutput.png?1534017123) That's all there is to using the TMP007 with CircuitPython! # Full Example Code https://github.com/adafruit/Adafruit_CircuitPython_TMP007/blob/main/examples/tmp007_simpletest.py # Adafruit TMP007 Sensor Breakout ## Python Docs # Adafruit TMP007 Sensor Breakout ## Downloads # Datasheets & Files - [TMP007 datasheet](http://www.adafruit.com/datasheets/tmp007.pdf "Link: http://www.adafruit.com/datasheets/tmp007.pdf") - [TMP007 product page at TI](http://www.ti.com/product/tmp007) - [Fritzing object in Adafruit Fritzing library](https://github.com/adafruit/Fritzing-Library) - [EagleCAD PCB files on GitHub](https://github.com/adafruit/Adafruit-TMP006-and-TMP007-PCB) # Schematic ![](https://cdn-learn.adafruit.com/assets/assets/000/018/662/medium800/sensors_schem.png?1407261984) # PCB Fabrication Print Dimensions in Inches ![](https://cdn-learn.adafruit.com/assets/assets/000/018/663/medium800/sensors_fabprint.png?1407261991) ## Featured Products ### Contact-less Infrared Thermopile Sensor Breakout - TMP007 [Contact-less Infrared Thermopile Sensor Breakout - TMP007](https://www.adafruit.com/product/2023) Unlike most of the other temperature sensors we have, this breakout has a really cool IR sensor from TI that can measure the temperature of an object without touching it! **Please note: These parts are formally discontinued, they work great but we won't be stocking for a much...** No Longer Stocked [Buy Now](https://www.adafruit.com/product/2023) [Related Guides to the Product](https://learn.adafruit.com/products/2023/guides) ## Related Guides - [Adafruit Proximity Trinkey](https://learn.adafruit.com/adafruit-proximity-trinkey.md) - [Arcade Buttons](https://learn.adafruit.com/arcade-buttons.md) - [Home Automation in the Cloud with the ESP8266 & Adafruit IO](https://learn.adafruit.com/home-automation-in-the-cloud-with-the-esp8266-and-adafruit-io.md) - [Adafruit I2S MEMS Microphone Breakout](https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout.md) - [Face Tracking Robot with MEMENTO](https://learn.adafruit.com/face-tracking-robot-with-memento.md) - [Introducing the Adafruit Bluefruit LE UART Friend](https://learn.adafruit.com/introducing-the-adafruit-bluefruit-le-uart-friend.md) - [Pocket Galaxy](https://learn.adafruit.com/pocket-galaxy.md) - [Adafruit ESP32-S2 Feather](https://learn.adafruit.com/adafruit-esp32-s2-feather.md) - [Adafruit DRV8871 Brushed DC Motor Driver Breakout](https://learn.adafruit.com/adafruit-drv8871-brushed-dc-motor-driver-breakout.md) - [Adafruit MiniPOV3 Kit](https://learn.adafruit.com/minipov3.md) - [Adafruit VS1053 MP3/AAC/Ogg/MIDI/WAV Codec Breakout Tutorial](https://learn.adafruit.com/adafruit-vs1053-mp3-aac-ogg-midi-wav-play-and-record-codec-tutorial.md) - [Adafruit ItsyBitsy ESP32](https://learn.adafruit.com/adafruit-itsybitsy-esp32.md) - [All the Internet of Things - Episode Four: Adafruit IO](https://learn.adafruit.com/all-the-internet-of-things-episode-four-adafruit-io.md) - [No-Code WipperSnapper Water Detection](https://learn.adafruit.com/water-detection-with-wippersnapper.md) - [Adafruit TLV493 Triple-Axis Magnetometer](https://learn.adafruit.com/adafruit-tlv493-triple-axis-magnetometer.md)