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

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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

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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)
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• DS1307 chipset
• optional: CR1220 backup battery

Pinout
• 5 V: 5 V power supply
• D1: SCL
• D2: SDA
• GND: Ground

Note:Delivery includes 6 pin headers (2x 8 pin male - male, male - female, male long pin - female each).
CR1220 button cell not included!
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Technical data

• for all current Raspberry Pi versions
• high accuracy
• energy efficient
• 2 calendar clocks
• 1 Hz and 32.768 kHz output
• I2C bus (400 kHz)
• voltage: 2.3 ... 5.5 V DC
• digital temperature sensor
• dimensions: 15 x 13 x 14 mm
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Features
  • 12 V interface card with 16 relays
  • Driver current only 15 - 20 mA
  • Switching capacity 250 V AC / 10 A or 30 V DC / 10 A
  • Standard interface
  • Indicator LEDs for each channel
  • Dimensions: 120 x 90 x 20 mm
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Technical data

• Chipset: TC4056A
• Charging method: linear charge
• Charge current: 1 A default, optionally adjustable
• Charge accuracy: 1.5%
• Input voltage: 4.5 ... 5,5 V
• Final charge voltage: 4.2 V
• blue LED: charge complete
• red LED: charging in progress
• Input: Micro USB Type B female or solder pads
• Output: solder pads
• Operating temperature: -10 ... +85 °C
• Dimensions (LxWxH): 29 x 18 x 4 mm

Setting the charging current
By default the board charges with a charging current of 1000 mA. By changing the resistor R3, the charging current can be set lower.

30 kOhm = 50 mA
20 kOhm = 70 mA
10 kOhm = 130 mA
5 kOhm = 250 mA
4 kOhm = 300 mA
3 kOhm = 400 mA
2 kOhm = 580 mA
1.5 kOhm = 780 mA
1.33 kOhm = 900 mA
1.2 kOhm = 1000 mA
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  • Technical data
  • Input voltage: 5 VDC
  • Switching threshold: 3- 5 V


Connections
  • DC+: positive power supply
  • DC-: negative power supply
  • CH1: low level trigger
  • CH2: low level trigger
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• Range: 3 to 400 cm
• Operating voltage: 5 V DC
• Frequency: 40 kHz
• Trigger pulse width: 10 µs
• High measuring accuracy (maximum deviation: 0.3 mm)

Dimensions: 43 x 20 x 15 mm
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Technical data
• Operating voltage: 3 ... 5 V DC
• chipset: QMC5883L / DB5883
• Communication: IIC
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• dimensions: approx. 13.4 x 13.3 mm
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Technical features

  • Relay type: Omron 1565E G3MB-202P
  • Output voltage 100 - 240 V AC
  • switching thresholds: 0 - 2.5 V =OFF / 3 - 5 V = ON
  • with zero crossing
  • Isolation by phototriak


Connections

  • DC+:Power supply ( 5 V DC)
  • DC-: Ground connection
  • IN1 ... IN8: Signal output, active at high level
ADAFRUIT DEBO SHD MOTOR - Developer Boards Shield - Servo, 16 Channel, 12 Bit, PCA9685 ADAFRUIT DEBO SHD MOTOR - Developer Boards Shield - Servo, 16 Channel, 12 Bit, PCA9685 35.27 EUR PWM driver Shield with integrated clock


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  • adjustable frequency PWM up to approx. 1.6 kHz
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Merkmale
  • 3,3 V LDO Spannungsregler
  • maximal 1 A Ausgangsstrom
  • Anschluss: Stiftleiste
  • inklsuive Kühlkörper
  • Maße: 14,5 x 32 mm
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Unterbrechungen zum Beispiel durch Spalte in den Felgen können als Unterbrechnung des Signals erkannt und ausgewertet werden. Integrierte Schmitt-Trigger sorgen für ein stabiles Signal!

Technische Daten

  • Versorgung über 5 V DC
  • Ausgang 5 V TTL
  • Schmitt-Trigger


Anschlussbelegung

  • 1 - Spannungsversorgung
  • 2 - Masse
  • 3 - Ausgang 1
  • 4 - Ausgang 2
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Technical data

- Supply voltage: 2.4 ... 5,5 V
- dimensions: 15 x 11 mm

Delivery without 10 Cent coin
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Merkmale
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• Chipsatz: LM393
• Indikator LED
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FREI DS 1629S - Real-time clock, thermometer, thermostat, SO-8 FREI DS 1629S - Real-time clock, thermometer, thermostat, SO-8 22.66 EUR 2-wire digital thermometer and real-time clock
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The main advantage of RTCs is that they have battery backup, which keeps the clock/calendar running even in the event of a power failure. An exceptionally small amount of power is required to keep the RTC running.

Technical features
  1. DS1307 RTC
  2. I²C interface
  3. for LIR2032 (not included)
  4. less than 500 nA in backup mode
FREI DEBO DRV L9110S - Developer boards - Motor control, L9110S FREI DEBO DRV L9110S - Developer boards - Motor control, L9110S 13.04 EUR 2-channel driver/control board for stepper motors based on the L9110 (HG7881).
With this board and its integrated H-bridge drivers you can control either 2 DC motors, or up to four stepper motors. The 2.5 V high level can be generated and provided by a Raspberry Pi or Arduino.

Technical data
• wide input voltage range: 2.5 - 6 V DC
• up to 800 mA per channel
• low saturation voltage
• TTL/CMOS compatible
• dimensions: 29 x 21 mm
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Features
  • Chipset: ULN2003A
  • Voltage: 5 - 12 V DC
  • 4 LEDs for signaling
  • XH-5P socket for stepper motors
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The output is controlled by a multi-turn potentiometer.
Excellent for operating 12 V devices with a 5 V supply.

Features

• LM2577
• input voltage 3-34VDC
• Output voltage continuously adjustable 4-35VDC
• Maximum output current 2.5A
• Dimensions: 66(L) x 35(W) x 12(H )mm
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Features
  • Input voltage: 3 ... 30 V
  • Output voltage: 1.3 ... 28 V
  • Output current: 2 A ( with additional heat sink up to 3 A)
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Features
  • Input voltage: 3 - 30 V DC
  • Output voltage: 1.2 - 18 V DC
  • Chipset: LM2596
  • Output current: max. 3 A
  • Efficiency: max. 93 %
  • Dimensions: 37 x 37 x 14 mm
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Der AC- und DC-Eingang dieses Moduls kann durch einen Jumper ausgewählt werden und er kann Spannungen von 3,5 V bis 12 V verarbeiten.

• Chip: KA2284
• Versorgungsspannung: 3,5 V - 12 V
• Einstellbarer Leistungspegelbereich
• AC/DC - Eingang wird durch einen Jumper geregelt
• Maße PCB: 29 x21 mm
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Technical data

  • double H-bridge
  • chipset: L298N
  • logic level: 5 V
  • output power: 25 W
  • Driver current: up to 2 A
  • Dimensions: 43 x 43 x 27 mm
FREI DEBO DRV A4988 - Developer boards - Stepper motor controller, A4988 FREI DEBO DRV A4988 - Developer boards - Stepper motor controller, A4988 16 EUR Motor control for stepper motors with microsteps

The board based on the A4988 driver for stepper motors offers resolutions up to 1/16 steps. The resolution can be selected manually via a DIP switch.

Technical Data

• chipset: A4988
• operating voltage: 8 - 35 V
• output current up to 1 A per phase
(cooled up to 2 A)
• full step, half step..1/16 step

Special features

• direction selection
• 5 step resolutions
• adjustable current
• intelligent chopping control
• undervoltage, overtemperature protection
FREI DEBO LCD 2.2 - Developer boards - Display LCD, 2.2'', 220 x 176 pixels, ILI9225 FREI DEBO LCD 2.2 - Developer boards - Display LCD, 2.2'', 220 x 176 pixels, ILI9225 18.99 EUR Display LCD, 2.2'', 220 x 176, ILI9225

Specifications

• driver chip ILI9225
• resolution 220 x 176
• SPI interface
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Features

• built-in sensor: APDS-9960
• Communication: I2C Interface
• Power supply: 3.3 V
• Detection range: 10 - 20 cm
• Dimensions (LxW): 22 x 17 mm

Delivery incl. pin strip
FREI DEBO TOUCH SENS2 - Developer boards - Board for capacitive touch sensors, MPR121 FREI DEBO TOUCH SENS2 - Developer boards - Board for capacitive touch sensors, MPR121 12.53 EUR The MPR121 is a capacitive touch sensor controller that is controlled via I2C interface. Conductive surfaces can be used as capacitive touchpads and controlled via the module. The chip can control up to twelve separate electrodes, plus a simulated thirteenth electrode. The MPR121 also has 8 LED driver pins. If these pins are not configured as electrodes, they can be used to drive LEDs.

Features

• Operating voltage:1.71 ... 3.6 V DC
• Operating temperature: -40 ... +85 °C
• Dimensions (LxW): 31 x 20 mm

2 matching pin headers included in the scope of delivery
NEXPERIA PCF8523T - Real-time clock (RTC), calendar, I2C, SO-8 NEXPERIA PCF8523T - Real-time clock (RTC), calendar, I2C, SO-8 11.24 EUR Main features
  • Provides year, month, day, weekday, hours, minutes and seconds based on a 32.768-kHz quartz crystal
  • Register: seconds to years
  • Clock operating voltage: 1.0 V to 5.5 V
  • Low backup current: typically 150 nA at VDD = 3.0 V and Tamb = 25°C
  • 2-line bidirectional 1-MHz Fast-mode Plus (FM+) I²C interface, read D1h, write D0h2
  • Battery backup input pin and switch-over circuit
  • Freely programmable timer and alarm with interrupt capability
  • Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF
  • Oscillator stop detection function
  • Internal Power-On Reset (POR)
  • Open drain interrupt or clock output pins
  • Programmable offset register for frequency adjustment
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Technical specifications:
  • Voltage: 5 V
  • Number of channels: 4
  • Contact load: 10 A
  • Relay: mechanical
  • Control signal: 5 V TTL


The relay module enables the control of up to four different devices or circuits via the control pins of the microcontroller. It has mechanical relays that can switch up to 10 A at 24 V. It is controlled via 5 V TTL signals, which makes it easy to integrate into existing systems. The robust relay contacts are suitable for a wide range of applications in automation technology, such as controlling motors, lights or other electrical devices.
FREI DS 1307 - Serial real-time clock, 56byte clock/calendar, DIP-8 FREI DS 1307 - Serial real-time clock, 56byte clock/calendar, DIP-8 14.76 EUR DS1307, Serial, I2C Real-Time Clock

Description:
The DS1307 serial RTC is a low-power, full BCD clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C, bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. A built-in power-sense circuit that detects power failures and automatically switches to the backup supply. Timekeeping operation continues while the part operates from the backup supply.

Features
• Completely Manages All Timekeeping Functions
o Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
o 56-Byte, Battery-Backed, General-Purpose RAM with Unlimited Writes
o Programmable Square-Wave Output Signal
• Simple Serial Port Interfaces to Most Microcontrollers
o I2C Serial Interface
• Low Power Operation Extends Battery Backup Run Time
o Consumes Less than 500nA in Battery-Backup Mode with Oscillator Running
o Automatic Power-Fail Detect and Switch Circuitry
• 8-Pin DIP and 8-Pin SO Minimizes Required Space
• Underwriters Laboratories® (UL) Recognized
FREI DS 12887+ - Real-time clock, clock/calendar, EDIP-24 FREI DS 12887+ - Real-time clock, clock/calendar, EDIP-24 49.12 EUR The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of battery- backed static RAM (113 bytes in the DS12C887 and DS12C887A). The DS12887 integrates a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS12C887 adds a century byte at address 32h. For all devices, the date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years.
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Specifications

• driver chip ILI9225
• resolution 220 x 176
• SPI interface
FREI DEBO DCDC DOWN 4 - Developer boards - voltage regulator, DC/DC converter FREI DEBO DCDC DOWN 4 - Developer boards - voltage regulator, DC/DC converter 12.01 EUR Small Step-Down Converter with adjustable output voltage

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
FREI DEBO GAS2 MQ135 - Developer boards - Gas sensor, benzene/fume, MQ-135 FREI DEBO GAS2 MQ135 - Developer boards - Gas sensor, benzene/fume, MQ-135 13.57 EUR Sensor for measuring the concentration of benzone, alcohol, smoke in the air e.g. to detect gas leaks. (gas alarm) or to measure the air quality. The threshold value from which the module responds can be adjusted via a potentiometer.
Please note that the sensor is heated up and operated warm. Exact measurement results are only delivered when the sensor is warm.

Technical data

• Measuring range gas concentration: approx. 10 ... 10.000 ppm
• Input voltage (VCC) : 5 V
• GND: ground connection
• AOUT: Analog output (0.1 ... 4 V)
• DOUT: Digital output (1/0 0.1V/5V)
• Dimensions (LxWxH): 32 x 22 x 27 mm

Note

Attention: The sensor gets warm during operation!
FREI DS 3231 S - Real-time clock, clock/calendar, SO-16 FREI DS 3231 S - Real-time clock, clock/calendar, SO-16 14.07 EUR The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The DS3231 is available in commercial and industrial temperature ranges, and is offered in a 16-pin, 300-mil SO package.
FREI DEBO GESTURE 9X - Developer boards - gesture recognition 9-fold, PAJ7620U2 FREI DEBO GESTURE 9X - Developer boards - gesture recognition 9-fold, PAJ7620U2 18.43 EUR This board contains the gesture recognition sensor PAJ7620U2, which can be accessed via I2C.
It can recognize 9 different gestures: Up, down, left, right, forward, backward, circle clockwise and counterclockwise, and waving. The PAJ7620U2 can also be used to detect approaching and distant objects.

Features

• Operating voltage: 1.8 ... 3,3 V
• Operating temperature: -40 ... +85 °C
• Recognition of 9 gestures
• Gesture speed Normal mode: 60°/s to 600°/s
• Gesture speed Gaming Mode: 60°/s to 1200°/s
• Immunity to ambient light: < 100k Lux
• built-in proximity detection
• flexible energy saving scheme
• I2C interface up to 400 kbit/s, pull-up voltage from 1.8V to 3.3V
• Ambient light noise reduction
• Dimensions (LxWxH): 14 x 14 x 5 mm