quen0n/unitemp-flipperzero

Flipper Zero application for reading temperature, humidity and pressure sensors like a DHT11/22, DS18B20, BMP280, HTU21 and more

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Jun 3, 2026

updated

aht10

am2320

bme280

bmp180

bmp280

dht11

dht20

dht21

dht22

ds18b20

flipperzero

hdc1080

htu21x

lm75

sht31

README

Flipper usage

🌡️ 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

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/

Contributors

quen0n

296 commits

bysepa1

5 commits

g3gg0

1 commits

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