Adafruit DS2482S-800 8 Channel I2C to 1-Wire Bus Adapter

Price:
Sale price A$40.13   Inc. GST
SKU:
ADA6027
50 units Ships in 7 to 10 days

Coming soon!

This is a DS2482S-800 Stemma QT board that uses a I2C-to-1W controller chip, with 8 selectable channels, built-in parasitic-power-pullups, adjustable I2C address and a wide operating voltage range! You can easily connect it to an existing I2C bus and then use the breakout pads to attach multiple DS18B20's, or pair it with our 1-Wire chaining breakouts for fancier experimentation.

You're probably familiar with the 'top three' electronics protocols: I2C, SPI and UART. Perhaps you're aware of a fourth one, called "1-Wire" which was invented by Dallas Semiconductor (which became Maxim, which became Analog Devices). As you may expect, this protocol uses a single data wire plus a ground wire (and an optional power wire) to connect to any number of sensors or memory chips that all share the same bus.

In theory, there's a lot of different 1-Wire devices out there, but in reality almost everyone uses 1-Wire for DS18B20 temperature sensors. the long wire lengths and ease of 'chaining' by sharing a single bus wire makes it perfectly fine for this purpose. You can bit-bang 1-Wire on most microcontrollers, and some SBCs like Raspberry Pi have kernel module support. But are lots of chips or firmware stacks without 1-Wire capability, or maybe you want to use 1-Wire devices on your desktop computer or other SBC with I2C.

You might be wondering: if you can connect multiple 1-Wire devices on a single wire, then why have 8 channels on this breakout? Reason is: if you have 8 temperature sensors, there's no easy way to know which one is which other than connecting them one at a time and reading the unique ROM identifier. With this breakout you can select the channel so you know for sure which location is being measured, even if the sensor is swapped out later.

To get you going fast, we spun up a custom-made PCB in the STEMMA QT form factor, making it easy to interface. The STEMMA QT connectors on either side are compatible with the SparkFun Qwiic I2C connectors. This allows you to make solderless connections between your development board and the DS2482S-800 or to chain it with a wide range of other sensors and accessories using a compatible cable. You can power the board directly from the STEMMA QT cable, whether 3V or 5V, that voltage will also be the power output for the 1-Wire peripherals.



Technical Details

Product Dimensions: 25.6mm x 25.3mm x 4.9mm / 1.0" x 1.0" x 0.2"

Product Weight: 2.6g / 0.1oz



    Shipping rates Australia wide and New Zealand

    Please add the items in cart and proceed to checkout to calculate shipping cost. We have range of shipping options once goods are ready to dispatch. 
    1. Regular shipping: Goods will be shipped using Australia post regular shipping service. 
    2. Express shipping: Goods will be shipped using Australia post EXPRESS shipping service. 
    3. Express split shipping: Local stock from Melbourne will be shipped ASAP (1 business day) using EXPRESS shipment while remaining items from overseas stock when arrived in Melbourne shipped using second EXPRESS shipment. 
    4. Pick up from Thomastown, Melbourne is available on appointment between 9 am to 3 pm during business days. 

      

    FAQ:

    • How do I estimate shipping for my order?
      • Add products in the shopping cart and head to the checkout page to estimate the shipping.

    Dispatch time

    Unless expressly agreed otherwise with you, we will not commence delivery of an order until we have received cleared payment of the purchase price in full.

    All orders placed before 11 am AEST (Monday to Friday) will ordinarily be processed on the same day.

    We will endeavour to ship the Products by the applicable time indicated on the website, but all times are indicative only.  All shipping times are dispatch times only, and actual delivery dates will depend on the shipping method chosen, delivery address and delivery service provider. 

    Note- Please make a note during purchase if you require any item urgently. However we cannot guarantee that we will be able to comply with any request

    *Go to Australia post delivery time calculation to get various Australia post service in your area please use our shipping postcode Thomastown, 3074 as the "from" address - https://auspost.com.au/parcels-mail/delivery-times.html?ilink=tools-open-deliv-times.

    Shipping Destinations

    We ship all products throughout mainland Australia, Tasmania and New Zealand - Including Darwin, Melbourne, Sydney, Tasmania, Adelaide, Brisbane, Perth, all metro and regional areas but do not deliver to areas in Australia where the Australia Post delivery network is not available. 

    Check Express shipping delivery coverage area at - http://auspost.com.au/parcels-mail/delivery-areas.html

    Receipt of deliveries

    Deliveries to post office boxes are not permitted where delivery is by courier. If delivery is by courier and nobody is available at the delivery address to accept delivery when delivery is attempted then the courier may either:

    • leave the relevant parcel at the unattended address (the courier will do so if specified in your delivery requirements); or
    • re-attempt delivery at a later time or date, in which case we may charge you an additional re-delivery fee. 

    Note that if a delivery is left unattended at the shipping address and is subsequently stolen then the theft is your responsibility, not ours.

    Payment & Security

    Apple Pay Google Pay Mastercard PayPal Visa

    Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

    You may also like