ELECFREAKS Octopus LM35 Analog Temperature Brick

Octopus Electronic Bricks, you can use them to build electronics projects just as easy as piling bricks. By using Octopus electronic bricks, you may connect Arduino/Freaduino compatible boards easily with various digital, analog, and I2C/Uart interfaces. These breadboard-less firm connections are prepared to extensive modules like potentiometers, sensors, relays, servos…even buttons, just plug and play.

This brick uses the LM35D LM35 Precision Centigrade Temperature Sensors from TI. The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly- proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies of ±1⁄4°C at room temperature and ±3⁄4°C over a full −55°C to 150°C temperature range. Lower cost is assured by trimming and calibration at the wafer level. The low-output impedance, linear output, and precise inherent calibration of the LM35 device make interfacing to readout or control circuitry especially easy. The device is used with single power supplies, or with plus and minus supplies. As the LM35 device draws only 60 μA from the supply, it has very low self-heating of less than 0.1°C in still air. The LM35 device is rated to operate over a −55°C to 150°C temperature range, while the LM35C device is rated for a −40°C to 110°C range (−10° with improved accuracy). The LM35-series devices are available packaged in hermetic TO transistor packages, while the LM35C, LM35CA, and LM35D devices are available in the plastic TO-92 transistor package. The LM35D device is available in an 8-lead surface-mount small-outline package and a plastic TO-220 package.

The Freaduino Sensor Shield is the perfect shield to connect this sensor to Arduino. Or Freaduino UNO which we had a pre-stray Octopus Brick interface.

DIMENSION

SPECIFICATIONS

The power supply needs: 5V
Pin Definition: S-Sigal V-VCC G-GND
Wide detecting scope
Fast response and High sensitivity
±0.5°C Accuracy from -10°C to +85°C
Usable temperature range: -55 to 125°C (-67°F to +257°F)
9 to 12-bit selectable resolution
Uses 1-Wire interface- requires only one digital pin for communication
Unique 64-bit ID burned into the chip
Multiple sensors can share one pin
Temperature-limit alarm system
Query time is less than 750ms
Size: 19x27mm
Calibrated Directly in Celsius (Centigrade)

•Linear + 10-mV/°C Scale Factor
•0.5°C Ensured Accuracy (at 25°C)
•Rated for Full −55°C to 150°C Range
•Suitable for Remote Applications
• Low Cost Due to Wafer-Level Trimming
•Less than 60-μA Current Drain
•Low Self-Heating, 0.08°C in Still Air
•Non-Linearity Only ±1⁄4°C Typical
•Low-Impedance Output, 0.1 Ω for 1-mA Loa