🌡️ 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.
Installation
Just install from the application catalog https://lab.flipper.net/apps/unitemp or the mobile application
…or use the ufbt to compile and install directly to Flipper.
git clone https://github.com/quen0n/unitemp-flipperzero.git
cd unitemp-flipperzero
git checkout -b master
ufbt update
ufbt && ufbt launch
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
List of supported sensors
| Model |
Temperature range
(accuracy, step) |
Humidity range
(accuracy, step) |
Extra range
(accuracy, step) |
Interface |
Image and link |
| 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/
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