
Reference: 984
Heat Shrink Tube
Heat Shrink Tubing 2:1, Eventronic Electrical Wire Cable Wrap Assortment Electric Insulation Heat Shrink Tube Kit (1 pcs) Please Choose Size Below
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Reference: 984
Heat Shrink Tubing 2:1, Eventronic Electrical Wire Cable Wrap Assortment Electric Insulation Heat Shrink Tube Kit (1 pcs) Please Choose Size Below
Reference: 1354
Length: 8.5 inches (Medium) Material: Copper Plated.EachPin Spacing: 2.54mm.Color: Colorfulcompatible with 2.54mm mil spacing pin headers.It can be used for PCB project, pc motherboard, etc.Allow you to plug and unplug easily for prototyping.Package Contents: 1 x Jumper Wire You will get only one pcs.
Reference: 31
3 Types Available 1. Male to Male 2. Male to Female 3. Female-Female
Reference: 245
Choose your desire Resistor value from below:
Reference: 94
Arduino UNO in Bangladesh The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller.
The DS1302 is a Real Time Clock (RTC) or TimeKeeping Chip with a build-in Trickle-Charger.
Important note : Cheap modules with the DS1302 and DS1307 have often problems with the crystal and the voltage. They often don't work very well. You are strongly advised to use a DS3231, which is very reliable and accurate and needs only a battery to run (the crystal is inside the DS3231).
This is a cheap module with the DS1302:
(photo by Krodal, Public Domain. The RST pin is the old name for the CE pin. This circuit has pull-down resistors which are an extra, in many cases they are not needed.)
The page at maxim for the DS1302 with all information and datasheet: http://www.maxim-ic.com/datasheet/index.mvp/id/2685
For other programs and Real Time Clock chips, see the Time-section in the Playground index.
The DS1302 can be easily connected to the Arduino. Three pins are needed for the interface (CE, I/O, SCLK), and Vcc2 should be connected to +5V (or +3.3V). The Vcc1 is for a battery or a rechargable battery or a supercap.
A crystal of 32.768kHz should be connected to X1 and X2.
The DS1302 will run with a voltage from 2.0V to 5.5V.
The three pins for the interface should avoid to use the internal pull-up resistors of the Arduino. The DS1302 has internal pull-down resistors, and the CE and SCLK lines should be low when inactive.
Some schematics on the internet have pull-up resistors on the three interface lines. That is wrong. Other schematics use two 22pF with the crystal. That is also wrong. See the datasheet for full specifications and a circuit.
The DS1302 uses three lines (CE, I/O, SCLK). It is not I2C, it's not OneWire, and it is not SPI. The most used name is "3-wire interface".
The communication is straight forward, with one strange thing:
During reading, the clock could rollover. That would result in bad clock data. To prevent that, the DS1302 has a buffer to store the clock data. That buffer can be read in a single communication session, called a "burst" mode.
Any valid program should therefor use that "burst" mode to read the clock data.
The Year data of the DS1302 is only two digits (0-99). The Year '0' is 2000, and not 1970 or 1980. It has a Leap-Year compensation from 2000 up to 2099 (for a value of 0-99).
The DS1302 does not use Daylight Saving Time ( http://en.wikipedia.org/wiki/Daylight_saving_time ).
The chip has 31 bytes of ram. The data in this ram will get lost if the Arduino is off, and the battery (or supercap) gets empty.
To store data, the EEPROM section of the AVR chip (the microprocessor used in the Arduino) is a much better choice.
The standard date and time functions like: strftime(), timelocal(), getdate(), mktime() are not available for the Arduino environment. Arduino uses the AVR GCC compiler which has no such functions.
At this moment (2012) there is no official library for date and time functions for the Arduino.
The most used date and time functions for the Arduino : http://playground.arduino.cc/Code/time
For the name of a month, this page contains many languages: http://www.omniglot.com/language/time/months.htm
The code below contains basic interface functions for the DS1302. Use it with Arduino 1.0.3 or higher.
Code improvement:
By using a structure with bit fields, reading and writing the clock data is very simple.
The code below uses the European 24-hour format.
The size of the sketch is about 7k and will fit in a ATmega8.
Reference: 797
1) A complete GPS module with an active antenna integrated, and a built-in EEPROM to save configuration parameter data.2) Built-in 25 x 25 x 4mm ceramic active antenna provides strong satellite search capability.3) Equipped with power and signal indicator lights and data backup battery.4) Power supply: 3-5V; Default baud rate: 9600bps.5) Interface: RS232...
Reference: 493
0-400C PT100 Type 5mm x 50mm Temperature Controller Probe 2 Meters
Reference: 1204
SHARP Distance Measuring Sensor unit 100 to 550 cm -GP2Y0A710K0F with Cable Long-distance type (bigger size). Analog output. Good Alternative to Sonar Sensors. This item comes with a JST connector and wires
Reference: 351
Specifications: This card is compatible with NFC capable phones and tablets, it is Smart Card Tags. Frequency: 13.56 MHz 1K byte EEPROM memory (768 FREE BYTES availability) Size: 85mm x 54mm x 0.9mm Material: PVC, Waterproof Write endurance 100,000 cycle Reading distance is 0 - 10cm (Reading distance depends on readers, not the cards)
Reference: 1188
IR Transmitter - White (5mm) 5 mm Clear Transparent Round Small Lens (Emitting Angle: 30 degrees) Forward Voltage / Direct Current : DC 1.5 Volt 20 mA (Low Voltage Energy Saving) Infrared Ray 850nm (Luminous Invisible Light) for Night Vision CCTV Security Camera Polarity (1.5 V) : Anode (Longer Part) | Cathode (Shorter Part)
Reference: 1203
The Sharp distance sensors are a popular choice for many projects that require accurate distance measurements. This IR sensor is more economical than sonar rangefinders, yet it provides much better performance than other IR alternatives. Interfacing to most microcontrollers is straightforward: the single analog output can be connected to an...
Reference: 674
The MQ series of gas sensors use a small heater inside with an electrochemical sensor. They are sensitive to a range of gasses and are used indoors at room temperature. The output is an analog signal and can be read with an analog input of the Arduino.
Reference: 690
This Module is based on ISD1820, which a multiple-message record/playback device. It can offers true single-chip voice recording, no-volatile storage, and playback capability for 8 to 20 seconds. The sample is 3.2k and the total 20s for the Recorder.
Reference: 321
PT100 Platinum Resister Temperature Sensor Waterproof Probe -20℃ ~ 450℃
Reference: 622
RCWL-0516 Microwave Radar Sensor Module Human Body Induction Switch Module
Reference: 575
This digital pen style PH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food, beverage etc.This PH meter is highly efficient and accurate due to its advanced microprocessor technology.Big LCD display screen which has great waterproof performance and let you easily read the displayed value....
Reference: 320
MAX6675 Module + K Type Thermocouple Sensor (Arduino compatiable)
Reference: 334
The 9DOF MPU-9150 is the world’s first 9-axis MotionTracking MEMS device designed for the low power, low cost, and high performance requirements of consumer electronics equipment including smartphones, tablets and wearable sensors. And guess what? You get to play with it.
Reference: 142
Description: Fingerprint scanners are awesome. Why use a key when you have one right at the tip of your finger? Unfortunately, they’re usually unreliable or difficult to implement. Well not anymore! We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.
Reference: 319
Description: Type K Type. Mounting thread: M6 Temperature Range:0-600°C. Thread Diameter:6mm / 0.23". Internal Insulation:Fibreglass. External Shielding:Metal Shield. Total Length:1M / 39". Fork Terminal Spacing: 3.5mm / 0.13". Color: As Picture Shown. 10mm thread sensor for accurate measurement.
Reference: 1405
Turbidity sensors is the use of optics , through the liquid solution and scattering rate of transmittance integrated to determine the turbidity case , since the amount of haze value is gradual , usually detected in a dynamic environment , the turbidity sensor acquisition value , the need for external control for AD conversion , the conversion to obtain...
Reference: 624
FM Transmitter Module Wireless Microphone Surveillance Frequency 88-108MHz
Reference: 1172
এই লাইট হোল্ডার টি মানুষের উপস্থিতি পেলে লাইটটিকে অটোমেটিক চালু করে দিবে। Infrared Sensor Automatic Lighting Control Switch with lamp holder; convenient, safe & practical. Good solution for energy saving. You can conveniently let the light auto on/off. The switch can detect the human body's infrared, and use infrared to control the load. Easy...
Reference: 667
DHT11 Temperature and Relative Humidity Sensor Module for Arduino
Reference: 687
BMP280 Pressure Sensor Module High Precision Atmospheric Arduino Replace BMP180
Reference: 315
Features: Working voltage: DC 5 V Static current: 3 mA Working temperature: 0 ~ + 70° Output way: GPIO Induction Angle: Less than 15° Detection range:2 cm to 400 cm Detecting precision: 0.3 cm + 1% Sensor size: Approx. 45 x 20 x 1.6mm Hole diameter: Approx. 1mm
Reference: 288
GY-801 Multi-Sensor Board - 3 Axis Gyro -3 Axis Accelerometer - 3 Axis Magnetometer, Barometer, Thermometer
Reference: 396
Specification: Electrical parameters: JSN-SR04T Operating voltage: DC 5V Quiescent current: 5mA Total current work: 30mA Acoustic emission frequency: 40khz Farthest distance: 4.5m Blind: 25cm
Reference: 948
ESP32 Development Board WiFi+Bluetooth Ultra Low Power Consumption Dual Cores ESP-32 ESP-32S Board
Reference: 568
Camera Module Features: 8 megapixel camera capable of taking photographs of 3280 x 2464 pixels Capture video at 1080p30, 720p60 and 640x480p90 resolutions All software is supported within the latest version of Raspbian Operating System
Reference: 1348
Descriptions:1. Easy to install.2. Automatic, convenient, safe and practical.3. It has the function of power and detection indication.4. The motion sensor can identify day and night automatically.5. It has a wide detection range made up of up and down, left and right service field.6. This product is a new type of energy-saving lighting switch,it adopts a...