ADAFRUIT DEBO RTC UHR2 - Developer Boards - Precision Real-Time Clock, DS3231

34.09 EUR
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Precision Real-Time Clock DS3231
Delivery Cost: 9.95 EUR
Availability: in stock
Delivery Time: 4-5 business days
Condition: new
Precision Real-Time Clock DS3231
supply voltage: 3.3 V- Dimensions: 23 x 17.6 x 7.2 mm
Delivery Cost: 9.95 EUR
Availability: in stock
Delivery Time: 4-5 business days
Condition: new
Comparison of Similar Products

The DS1302 chip uses a simple serial interface and sample code is available for Arduino, Raspberry Pi and many others.
The real time clock counts seconds, minutes, hours, the date of the month, the month, the day of the week and the year with leap year compensation valid until 2100.
• serial inputs and outputs for minimum pin count
• 2 V to 5.5 V full operation
• requires less than 300 nA at 2 V
• single byte or multi-byte data transfer for reading or writing clock or RAM data
Note
• battery not included (battery see accessories)

- Satellites: 22 (acquisition), 66 (search)
- Update rate: 1 to 10 Hz
- Position accuracy: 3 m
- Speed accuracy: 0.1 m
- Warm / cold start in 34 seconds
- Recording sensitivity: -145 dBm
- Detection sensitivity: -165 dBm
- Maximum speed: 515 m/s
- with jammer detection and reduction
- Dimensions: 35 x 25.5 x 6.5 mm

- voltage range: 2.7 - 5 V
- temperature range -40 to 125°C
- Eyelihood: ± 0.25°C
- resolution: 0.0625°C
- Dimensions: 13 x 21 x 2 mm

- 6 address selection pins
- adjustable frequency PWM up to approx. 1.6 kHz
- 12 bit resolution for each output
- configurable push-pull or open-drain output
- Dimensions: 54 x 70 x 3 mm

- pre-assembled
- input voltage: 5 V
- 100 mA charging current, adjustable to 500 mA by re-soldering
- with JST cable
- Dimensions: 12.5 x 8 x 30 mm

- pre-assembled
- input voltage: up to 5 V via miniUSB
- 500 mA Charging current, adjustable to 100 to 1000 mA by re-soldering
- with JST cable

Instead of struggling with two multimeters, you can simply use the handy INA219B chip on this board to measure both voltage and DC current consumption via the I2C interface.
- Current measurement resistance: 0.1 Ohm / 1% / 2 W
- Target voltage: up to 26 V
- Current measurement: up to 3.2 A
- Resolution: 0.8 mA
- Dimensions: 20 x 23 mm

Technical Details
- FeatherWing OLED - 128x32 OLED Add-on For All Feather Boards
- very readable due to the high contrast of an OLED display
- dimensions: 22.9 x 50.9 mm
- Display area: 25.8 mm

- pre-assembled
- input voltage: 5 V via microUSB
- 100 mA charging current, adjustable to 500 mA by re-soldering
- with JST cable
- Dimensions: 19 x 2 x 21 mm

- charging current: max. 1000 mA
- with low-battery detection
- 2 A internal switch
- Dimensions: 22 x 37 x 7 mm

- Contains both infrared and full spectrum diodes
- Sensitivity: 188 µLux
- Input measurements up to 88,000 lux
- Uses I2C-7-bit address 0x29, 0.28 (fixed)
- Supply voltage: 3.3 - 5 V
- STEMMA QT connector for the I2C bus
- Dimensions: 16 x 19 x 1 mm

- three-axis detection
- selectable scale length
- interrupt output
- multiple data rate options: 1 Hz to 5 KHz
- Dimensions: 20 x 20 x 2.6 mm

- with low-battery detection
- charging current: max. 500 mA
- 2 A internal switch
- Dimensions: 22 x 37 x 7 mm

- flashing LED when touch is detected
- Dimensions: 33 x 19 x 2 mm
2 pin headers included in the scope of delivery

- simple use with Arduino or another microcontroller
- installed tilt / position detection
- Wide range of use from 2 to 8 g
- very precise with built-in 14-bit ADC
- Dimensions: 21 x 18 x 2 mm

- 4-channel
- with one amplifier with programmable gain
- Voltage range: 2 - 5.5 V
- Dimensions: 25.4 x 17.8 x 4.6 mm

- humidity measurement with ±3% accuracy
- air pressure measurement with ±1 hPa absolute accuracy
- temperature measurement with ±1.0°C accuracy
- Dimensions: 18 x 19 x 3 mm

This FeatherWing will make it real easy to add datalogging to any of our existing Feathers. You get both an I2C real time clock (PCF8523) with 32KHz crystal and battery backup, and a microSD socket that connects to the SPI port pins (+ extra pin for CS). A CR1220 coin cell is required to use the RTC battery-backup capabilities!
- 50.8 x 22.9 x 1.6 mm

- Charging with a 5-6 VDC, USB or 6 V solar panel
- automatic charge current detection for highly efficient use of solar panels with any wattage
- three color signal lamps-LEDs
- Battery warning display with LED output
- Set for maximum charging rates of 500 mA
- temperature monitoring

- Sensor for Silicon Labs
- measures relative humidity with ±3 %
- temperature accuracy: ± 0.4°C
- temperature range: -10 to +85°C
- Dimensions: 15.3 x 17.8 x 3 mm

- 24 individually addressable RGBs
- with integrated drivers
- constant current: 18 mA
- voltage range: 4 - 7 V
- outside diameter: 65.6 mm
- inside diameter: 52.3 mm

- 4 busbars with positive and negative markings
- 15 rows of double 5-hole rows
- Dimensions: 44 x 55 mm

- 4 busbars with positive and negative markings
- 15 rows of double 5-hole rows
- Dimensions: 55 x 44 mm

- 4 busbars with positive and negative markings
- 4 busbars with positive and negative markings 4 busbars with positive and negative markings
- 30 rows from double 5-hole rows
- Dimensions: 81 x 51 mm

Technical properties
• Input voltage: 4.75 ... 23 V DC
• Output voltage: 1 ... 17 V DC (adjustable)
• Max. output current (permanent): 1.8 A
• Max. output current (short time): 3 A
• Conversion efficiency max. 96
• switching frequency 340 KHz
• Operating temperature: -40 ... +85 °C
• Dimensions (LxWxH): 18 x 12 x 4.5 mm

A short warm-up time is required for its optimal performance. The sensor's breakout board provides both digital (DO) and analog (AO) signal outputs. The digital outputs can be adjusted by configuring the limits using a potentiometer, while the analog output reflects the gas intensity around the sensor. The use of an Arduino (or a compatible board such as Dasduino) allows the sensor to be integrated into various applications.
Technical specifications
- Detects: Ethanol (C2H5OH)
- Voltage: 5 V
- digital output: 0 V / 5 V
- analog output: 0 .. 5 V
- LM393 comparator
- Dimensions: 38 x 22 mm
external links
https://github.com/SolderedElectronics/Alcohol--Ethanol-sensor-MQ3-breakout-hardware-design


- small and user friendly
- Power: 3 W
- Dimensions: 24.1 x 19.7 x 8.2 mm

- FT232H chip and one EEPROM for onboard configuration
- 20x GPIO
- Dimensions: 38 x 23 x 4 mm

- linkable design
- fast protocol with 800 KHz
- specially for portable applications
- diameter: 12.5 mm

The last three digits of the I2C address can be set via jumpers on the board, which makes it possible to use several modules at the same time.
Via an additional jumper the write protection of the module can be activated, whereby the data can only be read.
Specifications
• Supply voltage: 1,8 ... 5,5 V
• Model AT24C256
• logic level: VCC
• Interface: I2C (@1010XXX, 0x50 - 0x57)
• Memory size: 32 KB
• clock frequency: up to 1 MHz
• write cycles: up to 1.000.000
• exchangeable memory chip

It also has an indicator light that illuminates when the voltage signal changes. It has a 3-pin connector for easy connection to the Arduino Sensor Expansion Board.
Specifications
• operating voltage: 5 V
• 3-pin jumper
• dimensions (L x W x H): 24 x 21 x 10 mm

Specifications
- compatible with Raspberry Pi, Arduino, etc.
- Delay compensation for directional detection
- automatic adjustment for waking and snoozing with ODR
- dynamic measuring range ± 2g, ± 4g, ± 8g
- 1.95 - 3.6 V Supply voltage
- 8 bit / 12 bit digital output
Note: for further technical data see data sheet

The digital and analog outputs are located on the vias, marked DO and AO. The digital output can be obtained by setting a threshold value with a potentiometer. The analog output depends on the intensity of the gases.
Technical data
- Gas detection: carbon monoxide, methane, propane, flammable gases
- Voltage: 3.3 V
- Output: digital
- Operating temperature: -10°C to 50°C (14 to 122 °F)
- Gas detection range: 10-1000 ppm CO, 100-10000 ppm combustible gases
- Preheating time: 48 hours
- Microcontroller: ATTiny404 onboard
- Mounting holes: 2
- easyC/Qwiic compatibility
- Dimensions: 54 x 22 mm
easyC
easyC is a robust connection system that optimizes the connection of microcontrollers, sensors and actuators using JST-SH compatible connectors (JST 4-pin). It offers solderless connections, serial connections of multiple devices (daisy-chaining), error-free design, parallel connection, universal compatibility and intermediate compatibility with Qwiic (Sparkfun connection system), simplifying prototype development. Further information on easyC can be found under ''Data sheets''.
Instructions for use
- the sensor needs 48 hours to preheat to the optimum operating temperature. If it detects gas, the LED lights up. If no gases are present, it remains switched off.
- Highly corrosive gases considerably weaken the sensor.
External links
https://github.com/SolderedElectronics/CO--flammable-gasses-sensor-MQ9-breakout-with-easyC-hardware-design

The digital and analog outputs are located on the vias, marked DO and AO. The digital output can be obtained by setting a threshold value with a potentiometer. The analog output depends on the intensity of the gases.
Technical data
- Gas detection: carbon monoxide, methane, propane, flammable gases
- Logic voltage: 5 V
- Operating voltage: 5 V
- Operating temperature: -10°C to 50°C (14 to 122 °F)
- Gas detection range: 10-1000 ppm CO, 100-10000 ppm combustible gases
- Preheating time: 48 hours
- Mounting holes: 2
- Dimensions: 22 x 38 mm
Instructions for use
- the sensor requires 48 hours to preheat to the optimum operating temperature. If it detects gas, the LED lights up. If no gases are present, it remains switched off.
- Highly corrosive gases considerably weaken the sensor.
External links
https://github.com/SolderedElectronics/CO--flammable-gasses-sensor-MQ9-breakout-hardware-design

It offers fast response times and low susceptibility to interference, making it ideal for applications such as ambient light monitoring, optical encoders and safety solutions.
Its design allows for easy integration into space-constrained systems, and it operates reliably at temperatures from -25°C to +70°C - an ideal choice for precise light detection.
Technical specifications
- Sensor type: Phototransistor / analog brightness output
- Chipset: HLPT550B5H5
- Supply voltage: 1.8 - 5 V
- Output voltage: low/equal to supply voltage
- Fixed known resistance: 10 kOhm
- Operating temperature: -25 to 70 °C
- Dimensions (L×W×H): 28 × 15 × 7 mm
- Compatibility: Arduino, Raspberry Pi, Raspberry Pi Pico, micro:bit and more

Technical data
- Resolution: 1024 x 600
- supported devices: Raspberry Pi, Banana Pi, Banana Pro, Windows PCs
- Connections: HDMI, Micro-USB
- Touch Controller: GT811
- Touch Panel Type: Capacitive (5 Multi-Touch)
- Backlight: LED
- Display size: 154.21 x 85.92 (mm)
Special functions
- Can also be used as a standalone HDMI display
reference
- suitable housing see accessories

It is sensitive to liquids, but is also suitable for gases. The warm-up time of the sensor is short, which increases its efficiency. The breakout board enables the processing of digital (DO) and analog (AO) signals. By setting the limits using the potentiometer, a digital output can be generated, while the analog output reflects the gas intensity in its environment. Both signals provide information for the detection of ammonia with an Arduino (or a compatible board such as Dasduino).
Technical specifications
- voltage: 5 V
- digital output: 0 V / 5 V
- analog output: 0 .. 5 V
- LM393 comparator
- Dimensions: 38 x 22 mm
External links
https://github.com/SolderedElectronics/Ammonia-sensor-MQ137-breakout-hardware-design

Features
- Chipset: VS1003
- Precision: 16-Bit
- Operating voltage: 5 V DC
- Interface: UART, SPI
- Recording format: IMA ADPCM
Supported formats
- MP3
- Mp3+V
- WMA
- WAV
- MIDI
- SP-MIDI