# SparkFun TMP102 Digital Temperature Sensor (Qwiic) - 3.3V | 0.0625°C Resolution, ±0.5°C Accuracy **Brand:** SparkFun **SKU:** byg7498 **ASIN:** B086KZ6RWN **Canonical URL:** https://crowcrowcrow.com/p/sparkfun-digital-temperature-sensor-tmp102-qwiic-use-3-3v/byg7498 **Subcategory:** Categories **Availability:** in_stock **Price (INR, all-inclusive):** ₹1,320 **Discount:** 33% **Customer rating:** 4.30/5 from 14 ratings ## Description SparkFun TMP102 Qwiic digital temperature sensor for precise I2C readings. Offers 0.0625°C resolution and ±0.5°C accuracy, running on 1.4V-3.6V. Ideal for Arduino/Raspberry Pi projects. Imported from USA, all duties included, arrives via ExpressBox. ## Highlights - High-Resolution Temperature Sensing — Achieve precise measurements with a 12-bit resolution, capable of detecting temperature changes as small as 0.0625°C, crucial for sensitive monitoring applications. - Easy I2C Integration — Features two Qwiic connectors for effortless plug-and-play connectivity with Arduino, Raspberry Pi, and other I2C-compatible devices, eliminating complex wiring. - Wide Voltage Compatibility — Operates reliably on a broad input voltage range of 1.4V to 3.6V, making it versatile for various low-power electronics projects and embedded systems. - Accurate & Reliable Readings — Delivers typical temperature accuracy of ±0.5°C, ensuring dependable data for critical temperature monitoring tasks in diverse environments. ## Key features - Uses the I2C interface. I2C Address: 0x48 by default (Three additional addresses available, as well). 12-bit, 0.0625°C resolution. Typical temperature accuracy of ±0.5°C - 3.3V sensor. Supports up to four TMP102 sensors on the I2C bus at a time. 2x Qwiic Connectors - The breakout has built-in 4.7kΩ pull-up resistors for I2C communications and runs from 1.4V to 3.6V. - I2C communication uses an open drain signaling, so there is no need to use level shifting. - The alert pin is an over temperature alert, which has an open-drain and is pulled up through a 10kΩ resistor. The alert can also be read over I2C ## Why choose this product **Precision Digital Temperature Monitoring** — The SparkFun TMP102 Qwiic sensor offers superior digital temperature readings compared to basic analog sensors. Its I2C interface ensures clean data transmission, while the 0.0625°C resolution and ±0.5°C accuracy provide the precision needed for advanced projects. Built-in pull-up resistors and Qwiic connectors simplify integration, making it a robust choice for electronics enthusiasts and engineers in India seeking reliable, high-fidelity temperature data for their custom builds. **Ideal for Makers & Prototyping** — This sensor is perfect for hobbyists, students, and makers building custom electronics projects, IoT devices, or environmental monitoring systems. It's well-suited for use with popular development boards like Arduino and Raspberry Pi. Those needing simple, accurate temperature data without complex calibration should consider this sensor. Users requiring analog output, extremely high-temperature ranges (above 125°C), or wireless connectivity might need to explore different sensor types. ## How to use 1. Connect the SparkFun TMP102 sensor to your microcontroller (like Arduino or Raspberry Pi) using either the Qwiic connectors or by wiring the I2C pins (SDA, SCL) and power/ground to your board. — Connect the Sensor 2. Apply a stable voltage between 1.4V and 3.6V to the sensor's power pin. Ensure the voltage does not exceed the 4V absolute maximum, as there is no onboard voltage regulation. — Power the Sensor 3. Use an I2C library for your microcontroller to communicate with the TMP102. Send commands to read the temperature, which will be returned as a digital value that can be converted to Celsius or Fahrenheit. — Read Temperature Data ## Product details | Field | Value | |---|---| | Interface | I2C | | Operating Voltage | 1.4V to 3.6V | | Maximum Supply Voltage | 4V (Absolute Maximum) | | Resolution | 12-bit, 0.0625°C | | Accuracy | ±0.5°C (Typical) | | I2C Address | 0x48 (Default) | | Pull-up Resistors | 4.7kΩ (Built-in) | | Alert Pin | Open-drain, pulled up via 10kΩ resistor | | Specific Uses | Temperature monitoring | | Output Type | Digital | | Compatibility | Arduino, Raspberry Pi, Qwiic Ecosystem | | Power Source | External (1.4V-3.6V) | | Cost per unit | 1 sensor at ₹1,320 — ₹1,320 per sensor | | Brand | SparkFun | | Model Number | TMP102 | | Part Number | SEN-16304 | | Color | Red | | Material | Copper | | Dimensions | 27mm x 27mm x 5mm (1.06in x 1.06in x 0.2in) | | Weight | 0.018 kg (0.63 oz) | | Number of Items | 1 | | Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers | ## Frequently asked questions ### What is the SparkFun TMP102 Qwiic digital temperature sensor? The SparkFun TMP102 is a digital temperature sensor that uses the I2C interface to communicate temperature data. It offers high resolution (0.0625°C) and accuracy (±0.5°C), making it suitable for precise temperature monitoring in various electronic projects. ### How do I connect the SparkFun TMP102 sensor? This sensor features two Qwiic connectors, allowing for easy plug-and-play integration with compatible development boards like Arduino and Raspberry Pi without soldering. You can also use the 0.1"-spaced pins for breadboard connections. ### What is the operating voltage for the TMP102 sensor? The SparkFun TMP102 sensor runs on a wide input voltage range of 1.4V to 3.6V. It's important not to exceed the 4V absolute maximum when powering via the plated through holes, as there is no onboard voltage regulation. ### Can I use multiple TMP102 sensors on the same I2C bus? Yes, the TMP102 supports up to four sensors on the same I2C bus by utilizing different I2C addresses. The default address is 0x48, with three additional addresses available. Built-in pull-up resistors simplify multi-device setups. ### Is this sensor suitable for measuring ambient temperature in India? Yes, the SparkFun TMP102 is excellent for measuring ambient temperatures in India. Its accuracy and resolution are suitable for environmental monitoring, weather stations, or controlling HVAC systems, provided the ambient temperature is within its operating range of -40°C to +125°C. ### How to choose an electronic sensor for my project? When choosing an electronic sensor, consider the type of data you need (temperature, humidity, motion), the required accuracy and resolution, the interface protocol (I2C, SPI, analog), operating voltage, and ease of integration. The SparkFun TMP102 is a great choice for precise digital temperature sensing via I2C. ### What are the benefits of using a digital temperature sensor like the TMP102? Digital temperature sensors like the TMP102 offer higher accuracy, better resolution, and simpler integration via digital interfaces like I2C compared to analog sensors. They often require less calibration and provide more stable readings, reducing noise interference. ### Are there any side effects of using the SparkFun TMP102 sensor? The SparkFun TMP102 sensor itself has no direct side effects when used correctly within its specified voltage and temperature ranges. Ensure proper power supply and I2C connections to avoid damaging the sensor or your connected microcontroller. ## Compliance No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging. ## Images 1. https://images.crowcrowcrow.com/B086KZ6RWN-0.webp 2. https://images.crowcrowcrow.com/B086KZ6RWN-5.webp 3. https://images.crowcrowcrow.com/B086KZ6RWN-12.webp 4. https://images.crowcrowcrow.com/B086KZ6RWN-15.webp 5. https://images.crowcrowcrow.com/B086KZ6RWN-18.webp 6. https://images.crowcrowcrow.com/B086KZ6RWN-21.webp --- Source: https://crowcrowcrow.com/p/sparkfun-digital-temperature-sensor-tmp102-qwiic-use-3-3v/byg7498 Returns: 14 days, free pickup, full refund on genuine issues. Shipping: Free across India, 6-8 days. Prices are all-inclusive (duties + GST).