1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards
      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards
      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards
      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards
      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards

      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards

      AB-1WirePiZero

      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards

      Množstvo:

      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards

      • 1-Wire® to I2C host interface with ESD protection diode.
      • Stackable with other Raspberry Pi accessory boards.
      • Buffered 5V I2C port.
      • External 5V power input for 1-Wire® interface.
      • I2C address selection via solder jumpers.

      The 1 Wire Pi Zero from AB Electronics UK is a communication board supporting the 1-Wire® protocol designed for use on the Raspberry Pi Zero.  A 5V buffered I2C port is also provided on the board.  The 1 Wire Pi Zero can be securely fitted to your Raspberry Pi using our mounting kit pack.

      Introduction:

      The 1-Wire® port on the 1 Wire Pi Zero is based around a DS2482-100 I2C to 1-Wire® bridge device.  The DS2482-100 provides bi-directional protocol conversion between the I2C port on the Raspberry Pi and any attached 1-Wire® slave devices.  An ESD Protection Diode is used to protect the 1 Wire Pi Zero and Raspberry Pi from electrostatic spikes on the 1-Wire® port.  Connections to the 1-Wire® port can be made through the RJ-12 socket or the solder points on the PCB.  We have a knowledge base article for configuring and using the 1-Wire® port on your Raspberry Pi.

      The 1 Wire Pi Zero is powered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allow you to stack the 1 Wire Pi Zero along with other expansion boards.

      A 5V input port is also provided allowing you to use an external power supply on the 1-Wire® interface, reducing the load on the Raspberry Pi.  If you choose to use the external 5V input please remove the solder jumper on the board to isolate the Raspberry Pi 5V bus.

      A detailed tutorial has been written by Jack Creasey, author of Raspberry Pi Essentials,for the setup of OWFS with the 1 Wire Pi and 1 Wire Plus boards. View the tutorial.

      I2C Address Selection

      The 1 Wire Pi Zero includes two address selection solder jumpers which can be bridged with solder to give you up to 4 different I2C addresses.

      Configuration 1:

      Configuration 2:

      Configuration 3:

      Configuration 4:

      Datasheets

      DS2482S (1-Wire Interface)

       

      Compatibility Chart

      ModelStatus
      Raspberry Pi Model A No
      Raspberry Pi Model B No
      Raspberry Pi 1 Model A+ Yes
      Raspberry Pi 1 Model B+ Yes
      Raspberry Pi 2 Model B Yes
      Raspberry Pi 3 Model B Yes
      Raspberry Pi Zero Yes
      Raspberry Pi Zero W Yes
      Orange Pi Yes
      Asus Tinker Board Yes
      Odroid Yes

      Input Ratings & Specifications

      Vdd (5V input pin): 5.0V

      Maximum current on 1-Wire pins: ±20 mA

      I2C SDA/SCL voltage: 5.0 V

      I2C port current: 100 mA

       

      Schematic

      Click to download
      Click to download schematic PDF.

      Assembly Instructions

      The 1 Wire Pi Zero is supplied with the 40 pin GPIO connector, RJ12 connector and 2 pin jumper unsoldered. 

      Before using the 1 Wire Pi Zero you will need to solder the two connectors onto the PCB.  We suggest soldering the 40 pin GPIO connector first and then the RJ12 connector.  The RJ12 connector is supplied clipped onto the PCB.

      PCB Header Assembly Jig

      Download and print our PCB Header Assembly Jig to hold your circuit board when soldering the header pins.

      Use

      Connecting to the 1-Wire® Port

      The 1-Wire® port on the 1-Wire Pi can be accessed through the female RJ12 socket or the solder points on the PCB.  An ESD protection diode is fitted between the RJ12 port and the 1-Wire® interface IC.

      The pinout connections for the RJ12 port are shown below:

      Pin    Usage
      1       5V
      2       Ground
      3       OW (1-Wire® Data, ESD Protected)
      4       RT (1-Wire® Return/Ground, ESD Protected)
      5       NC
      6       NC

      RJ12 Port

      Mechanical Drawings

      Mechanical Drawing

      Click image to enlarge

      Sample Code

      The Quick2wire lib from https://github.com/quick2wire/quick2wire-python-api allows easy access to the I2C port via Python.

      Configuring and using the 1-Wire® port on your Raspberry Pi

      AB Electronics (UK)
      AB-1WirePiZero

      Špecifické referencie

      ean13
      7426787870057

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      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards

      1 Wire Pi Zero (AB Electronics UK) 1-Wire to I2C Raspberry Pi accessory boards