🌡️ Unitemp - Universal temperature sensor reader

An app for Flipper Zero that turns your gadget into a multifunctional environmental sensor. It can read data from various sensors you connect to Flipper Zero, for example, temperature, humidity, atmospheric pressure, and even CO₂ levels. You can assess the climate at home or in the office, or simply use Flipper Zero as a portable thermometer.

Features

• Real-time display of temperature, humidity, pressure, and CO₂ concentration.
• Heat index and dew point temperature display.
• Environmental quality analysis and visual and audible indicators (good 🟢, normal 🟡, poor 🟠, dangerous 🔴)
• Automatic and manual selection of temperature (degrees Celsius/Fahrenheit) and pressure (mmHg/inHg/kPa/hPa) units.
• Support for a wide range of digital sensors with I²C, SPI, 1-Wire, and Single Wire connectivity.
• User-friendly and intuitive interface.

Connecting sensors

To connect, you will need a supported sensor and Dupont male-female wires. The connection method depends on the interface.

Single Wire (DHT11 and etc)

|Sensor pin | Flipper Zero pin | |:-----------:|:-------------------:| |VCC |9 (3V3) | |GND |any GND (8,11 or 18) | |Data |any free digital port|

1-Wire (DS18B20 and etc)

|Sensor pin | Flipper Zero pin | |:-----------:|:-------------------:| |VCC |9 (3V3) | |GND |any GND (8,11 or 18) | |Data |any free digital port|

Pin 17 (1W) is preferred. You can also connect multiple sensors in parallel using the same circuit.

SPI (MAX6675, MAX31725 and etc)

|Sensor pin | Flipper Zero pin | |:-----------:|:-------------------:| |VCC |9 (3V3) | |GND |any GND (8,11 or 18) | |MOSI (if any)|2 (A7) | |MISO (DO/SO) |3 (A6) | |SCK (CLK) |5 (B3) | |CS (SS) |any free digital port|

I²C

|Sensor pin| Flipper Zero pin | |:--------:|:------------------:| |VCC |9 (3V3) | |GND |any GND (8,11 or 18)| |SDA |15 (C1) | |SCL |16 (C2) |

Need help? Discussions?

Join the discussion, ask a question, or just send a photo of the flipper with sensors to Discord. Invite link

Contributing

You can write a driver for your favorite sensor and submit it in pull requests. This is encouraged.

Gratitudes

• Special thanks xMasterX, vladin79, divinebird, jamisonderek, kaklik
• Svaarich for the UI design
• Unleashed firmware community for sensors testing and feedbacks
• ...and everyone who helped with development and testing

List of supported sensors

| Model | Temperature range(accuracy, step)| Humidity range(accuracy, step)| Extra range(accuracy, step)| Interface | |:--------------------:|:---------------------------:|:--------------------:|:---------------------------:|:-------------:| |AHT10 |-40...85°C(±0.3°C, 0.01°C) |0...100%(±2%, 0.024%) | |I²C| |AHT20 |-40...85°C(±0.3°C, 0.01°C) |0...100%(±2%, 0.024%) | |I²C| |AM2320 |-40...80°C(±0.5°C, 0.1°C) |0...100%(±3%, 0.1%) | |Single Wire/I²C| |BME280 |-40...85°C(±1.0°C, 0.01°C) |0...100%(±3%, 0.008%) |300...1100 hPa(±1.0 hPa, 0.0016 hPa) |I²C| |BME680 |-40...85°C(±0.5°C, 0.01°C) |0...100%(±3%, 0.008%) |300...1100 hPa(±0.6h Pa, 0.18 hPa) |I²C| |BMP180 |-40...85°C(±0.5°C, 0.01°C) | |300...1100 hPa(±1.0 hPa, 0.01 hPa) |I²C| |BMP280 |-40...85°C(±1.0°C, 0.01°C) | |300...1100 hPa(±1.0 hPa, 0.0016 hPa) |I²C| |DHT11 (AOSONG) | 0...50°C(±2°C, 1.0°C) | 20...90%(±5%, 1.0%) | |Single Wire| |DHT11 (ASAIR) | -20...60°C(±2°C, 0.1°C) | 5...95%(±5%, 1.0%) | |Single Wire| |DHT12 | -20...60°C(±0.5°C, 0.1°C) | 20...90%(±5%, 0.1%) | |Single Wire| |DHT20/AM2108 |-40...80°C(±0.5°C, 0.1°C) |0...100%(±3%, 0.1%) | |I²C| |DHT21/AM2301 |-40...80°C(±1.0°C, 0.1°C) |0...100%(±3%, 0.1%) | |Single Wire| |DHT22/AM2302 |-40...80°C(±0.5°C, 0.1°C) |0...100%(±2%, 0.1%) | |Single Wire| |DS18B20 |-55...125°C(±0.5°C, 0.0625°C)| | |1-Wire| |DS18S20 (DS1820) |-55...125°C(±0.5°C, 0.5°C) | | |1-Wire| |DS1822 |-55...125°C(±2.0°C, 0.0625°C)| | |1-Wire| |HDC1080 |-40...125°C(±0.2°C, 0.1°C) |0...100%(±2%, 0.1%) | |I²C| |HDC2080 |-40...125°C(±0.2°C, 0.1°C) |0...100%(±2%, 0.1%) | |I²C| |HTU21D(F) |-40...125°C(±0.3°C, 0.1°C) |0...100%(±2%, 0.04%) | |I²C| |LM75 |-55...125°C(±2.0°C, 0.1°C) | | |I²C| |MAX31725 |-40...105°C(±0.5°C, 0.004°C) | | |I²C| |MAX31855 |-200...1800°C(±2.0°C, 0.25°C)| | |SPI| |MAX6675 |0...1024°C(±9.0°C, 0.25°C) | | |SPI| |SCD30 |0...50°C(±0.4°C, 0.01°C) |0...100%(±3%, 0.004%) |0...40000 ppm CO₂(±30 ppm, 1.0 ppm) |I²C| |SCD40 |-10...60°C(±0.8°C, 0.003°C) |0...100%(±6%, 0.002%) |400...2000 ppm CO₂(±50 ppm, 1.0 ppm)|I²C| |SCD41 |-10...60°C(±0.8°C, 0.003°C) |0...100%(±6%, 0.00%2) |400...5000 ppm CO₂(±40 ppm, 1.0 ppm)|I²C| |SHT20 |-40...125°C(±0.3°C, 0.01°C) |0...100%(±3%, 0.04%) | |I²C| |SHT21 |-40...125°C(±0.3°C, 0.01°C) |0...100%(±2%, 0.04%) | |I²C| |SHT25 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±1.8%, 0.04%)| |I²C| |SHT30/GXHT30 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±2%, 0.01%) | |I²C| |SHT31/GXHT31 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±2%, 0.01%) | |I²C| |SHT35/GXHT35 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±1.5%, 0.01%)| |I²C| |SHT40 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±1.8%, 0.01%)| |I²C| |SHT41 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±1.8%, 0.01%)| |I²C| |SHT43 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±1.8%, 0.01%)| |I²C| |SHT45 |-40...125°C(±0.1°C, 0.01°C) |0...100%(±1%, 0.01%) | |I²C| |SHTC3 |-40...125°C(±0.2°C, 0.01°C) |0...100%(±2%, 0.01%) | |I²C| |Si7021 |-40...125°C(±0.3°C, 0.01°C) |0...100%(±2%, 0.025%) | |I²C| |TMP102 |-40...125°C(±0.5°C, 0.06°C) | | |I²C|

A comprehensive overview of the sensors can be found here (RU): https://kotyara12.ru/iot/th_sensors/