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This digital temperature and humidity module is a digital output signal containing a calibrated temperature and humidity combined sensor.

It uses dedicated digital module capture technology and temperature and humidity sensor technology to ensure that products has high reliability and excellent long-term stability. Sensor includes a capacitive humidity sensing element and a high-precision temperature measurement device, and with a high-performance 8-bit microcontroller connected. Therefore, the product has excellent quality, fast response, anti-interference ability, low cost and other advantages. Ultra-small size, low power consumption, signal transmission distance up to 20 meters. Making it the best choice for all kinds of applications and even the most demanding applications.

Applications

HVAC (Heating Ventilation Air Conditioning), dehumidifiers, testing and inspection equipment, consumer goods, automotive, automation, data loggers, home appliances, humidity regulator, medical, weather stations and other related humidity detection control.

Specifications

• Dimensions: 40 x 23mm
  
• Weight: 4g
• Working voltage: 3 V - 5.5 V
  
• Port: digital two-way single bus
  
• Temperature range: -40 to 80 °C ± 0.5 °C
  
• Humidity: 20 to 90% RH ± 2% RH
  
• Platform: Arduino, SBC

What's in the box?

1 x Sensor Module

Resources

How to setup a DHT22 with your Raspberry Pi.The resistor is already on the PCB so you can skip the breadboard part.

• Datasheet (DHT22)
• Example Code (Arduino) (Credit to Adafruit)
  
  
  

• Double H bridge drive
• Chip: L298N (ST NEW)
• Logical voltage: 5V
• Drive voltage: 5V-12V
• Logical current: 0mA-36mA
• Drive current: 2A (MAX single bridge)
• Storage temperature: -20 to 135
• Max power: 25W
• Weight: 30g
• Size: 43 x 43 x 27mm

• This module has a built-in 5v power supply, when the driving voltage is 7v-12v, this supply is suitable as a power supply.
• DO NOT connect input voltage to 5v on controller interface.
• When ENA is enabled IN1 IN2 control OUT1 OUT2
• When ENB is enabled IN3 IN4 control OUT3 OUT4

• Robotic control with python
• L298 Datasheet
• Check out tutorial from instructables

• Maximum Load: 50 W
• Max Switching Voltage: 100V DC
• Minimum Voltage: 250V DC
• Maximum Switching Current: 0.5 A
• Max Load Current: 1.0 A
• Max Contact Resistance: 0.4 Ω
• Temp Rating: -20~ 80℃
• Net Weight: 12g
• Material: PP

RC522 chip

MF RC522 is applied to the highly integrated read and write 13.56MHz contactless communication card chip, NXP launched by the company for the "table" application of a low-voltage, low-cost, small size of the non-contact card chip to read and write, smart meters and portable handheld devices developed better choice. The MF RC522 use of advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. 14443A compatible transponder signals. The digital part of to handle the ISO14443A frames and error detection. In addition, support rapid CRYPTO1 encryption algorithm, terminology validation MIFARE products. MFRC522 support MIFARE series of high-speed non-contact communication, two-way data transmission rate up to 424kbit/s. As new members of the 13.56MHz reader card series of highly integrated chip family, MF RC522 MF RC500 MF RC530 There are a lot of similarities, but also have many of the characteristics and differences. Communication between it and the host SPI mode helps to reduce the connection narrow PCB board volume, reduce costs.

RFID module

The MF522-AN module uses the the original Philips MFRC522 chip design circuit card reader, easy to use, low cost, and applies to the user equipment development, the reader and the development of advanced applications, the need for the user RF card terminal design/production. This module can be directly loaded into the various reader molds. Utilizes a voltage of 3.3V, through the SPI interface simple few lines directly with any user CPU motherboard connected communication can ensure that the module is stable and reliable work, distance card reader

Specifications

Electrical parameters

• Operating current :13-26mA/DC 3.3V
• Idle current :10-13mA/DC 3.3V
• Sleep current: <80uA
• Peak current: <30mA
• Operating Frequency: 13.56MHz
• Supported card types: mifare1 S50, mifare1 S70 MIFARE Ultralight, mifare
• Pro, MIFARE DESFire
• Product physical characteristics: size: 40mm×60mm
• Environmental Operating temperature: -20 to 80°C
• Environmental Storage Temperature: -40 to 85°C
• Relative humidity: relative humidity 5%-95%

Module interfaces SPI Parameter:

Data transfer rate: maximum 10Mbit/s

What's in the box?

1 x RFID-RC522 module
1 x Standard S50 blank card (Non-contact IC card)
1 x S50 special-shaped card (key ring shape)
1 x Straight and 1 x angled male to male header(Soldering required)

Resources

Setup guide

• Model Number: blank card
• Material: PV
• Colour: blank white
• Size: 85.6mm X 54mm
• Thickness: 0.8mm
• Printing: offset printing
• Chip: 1k S50
• Certification: CE,FCC
• Frequency: 13.56MHz
• Protocol standard: 14443a
• Memory: 8kbits

• Small and durable
• Waterproof, shockproof, anti-corrosive.
• Keyring for easy carrying.
• Not re-programmable

• Main Chip : Fudan F08 compatible S50
• Colour : Blue,Yellow, Black, Green, Red
• Size : Approx. 40.5×32×4.2mm
• Operating Frequency : 13.56 MHz
• Communication speed : 106K Boud
• Read distance : 2.5 ~ 10cm
• Read time : 1 ~ 2ms
• Operating Temperature : -20 ℃ ~ 85 ℃
• Endurance :> 100,000 times
• Storage capacity : 8Kbit, 16 partitions, each partition with 2 group passwords

Please note: The board colour may vary from the pic. (Green or Blue)

Standard Prototype PCB is great for prototyping and building circuits but it can be time consuming to use with components with certain pin configurations such as IC's.

These boards are especially useful for preserving a prototype or experiment you just created on a solderless breadboard by soldering all the pieces in place.

• Grid : 0.1" (2.54mm)
• Thickness : 1.6mm(5pcs)
• Hole diameter : about 1mm
• Material : FR-4 (glass fiber)
• All holes are plated through
• Both sides are identical

Please note: Screws are not included

This handy USB extension cable will make it easy for you to enclose a device that has a A type (USB host) port. It's short (25cm), so perfect for mounting your Raspberry Pi, Beagle Bone, Arduino etc. into a box!

The jack half has two mounting 'ears' with M3 screws installed, 8mm apart. The ears are flexible so the holes don't have to be drilled very precisely.

Features

• Length between connectors: 25cm
• Colour: Black
• 28AWG
• USB A Male to Panel Mount USB A Female
• M3 Mounting Ears

What's in the box?

1 x USB A Male to Panel Mount USB A Female

• 40pcs chromatic male to male color jumpers
  
• 40pcs chromatic color female to female jumpers
  
• 40pcs chromatic male to female color jumpers
  
• Durable and reusable
  
• Easy to use
  
• A popular choice for constructing electronic projects
  
• Use for electronic projects as including Raspberry Pi and Arduino projects

• Length:10cm
  
• Compatible with 2.54mm spacing pin headers and breadboards

• Motor size: 38x20x15mm
• Shaft diameter: 2mm 
• Axial length: 9mm 
• Voltage: 3-6V

A binding post is a connector commonly used on electronic test equipment to terminate (attach) a single wire or test lead. They are also found on loudspeakers and audio amplifiers as well as other electrical equipment.

Features

• Type : Banana plug or lug
• Solid hard plastic shell
• Quantity : 4pcs ( 2 x red and 2 x black )
• Easy installation with screws and nuts
• Suitable for :  4mm banana plugs, lugs or bare wire

What's in the box?

2 x red binding posts
2 x black binding posts

• Size: 3.5 x 1cm
  
• Power supply: 5V DC
  
• Detector distance: 10mm
  
• Build-in Tcrt5000 Sensor NSOR
  
• Applicable to a variety of platforms including Arduino / AVR / ARM /PIC

• Three axis (X,Y,Z and button)
  
• Size:37x25x32mm
  
• Weight: 15 g
  
• Tie-point 700
  
• ABS plastic material
  
• Completely reusable
  
• Phosphor bronze nickel plated spring clips
  
• Accepts a variety of wire sizes(29-20 AWG)

• Size: 5mm
• Length: 37mm
• Emitted colour: Infrared
• Lens color: Black/Clear
• wavelength: 940nm
• Forward voltage (V): 1.2-1.4V
• Forward current (mA): 100mA
• Transmitting and receiving distance: about 7-8 Meters