Adafruit QT 5V to 3V Shifter Breakout - STEMMA QT / Qwiic

SKU: ADA5637 Brand: Adafruit

If you're hankerin' to use the new Qwiic / Stemma QT standard for your next project - but you're still using a classic Arduino UNO or other 5V microcontrollers, this board is designed for you!

$5.85 AUD, inc GST

$5.32 AUD, exc GST

Available with a lead time
Expect dispatch between Nov 25 and Nov 29

Quantity Discounts:

10-25 $5.11 (exc GST)
25+ $4.95 (exc GST)

If you're hankerin' to use the new Qwiic / Stemma QT standard for your next project - but you're still using a classic Arduino UNO or other 5V microcontroller, this board is designed for you! Note that Adafruit QT boards are all 3V and 5V safe but many other Qwiic and other I2C devices are not 5V safe or compatible. That means that if you use wires to connect a Qwiic board to a 5V microcontroller you risk damaging your shiny new I2C sensor with over-high voltages. Unless, of course you have one of these Adafruit QT 5V to 3V Shifter Breakouts

On one side is 5V-safe power and logic input. In the middle is a 3.3V regulator that can provide 500mA plus level shifting circuitry. On the opposite side is the same I2C traffic but now safely shifted down to 3.3V to allow usage with the vast number of sensors and devices that are not 5V safe.

It's simple but very effective! You also get breadboard breakout pins for breadboard usage so it can also be used as a QT-to-perfboard adapter.

The STEMMA QT connectors on either side are compatible with the I2C connectors. This allows you to make solderless connections between your development board and the QT Shifter or to chain it with a wide range of other sensors and accessories using a compatible cable. QT Cable is not included, but Adafruit have a variety in the shop.

Technical Details

GitHub Repository

Product Dimensions: 25.4mm x 18.0mm x 4.8mm / 1.0" x 0.7" x 0.2"

Product Weight: 1.8g / 0.1oz

This product is listed in:

Breakouts & Modules>Logic Converters

Product Comments

Start the conversation

Exact shipping can be calculated on the view cart page (no login required).

Products that weigh more than 0.5 KG may cost more than what's shown (for example, test equipment, machines, >500mL liquids, etc).

We deliver Australia-wide with these options (depends on the final destination - you can get a quote on the view cart page):

$3+ for Stamped Mail (typically 10+ business days, not tracked, only available on selected small items)
$7+ for Standard Post (typically 6+ business days, tracked)
$11+ for Express Post (typically 2+ business days, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (must order online and only pickup after we email to notify you the order is ready). Orders placed after 2PM may not be ready until the following business day.

Non-metro addresses in WA, NT, SA & TAS can take 2+ days in addition to the above information.

Some batteries (such as LiPo) can't be shipped by Air. During checkout, Express Post and International Methods will not be an option if you have that type of battery in your shopping cart.

International Orders - the following rates are for New Zealand and will vary for other countries:

$12+ for Pack and Track (3+ days, tracked)
$16+ for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount will increase based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.

Have a product question? We're here to help!