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GeezerVison is showing www.sparkfun.com — Qwiic - SparkFun Electronics  Prototyping with I²C has never been easier.SparkFun's Qwiic Connect System uses 4-pin JST connectors to quickly interface development boards with sensors, LCDs, relays and more. Benefits Of The Qwiic Connect SystemThe Qwiic Connect System is designed to keep your projects moving.  no solderingQwiic cables (4-pin JST) plug easily from development boards to sensors, shields, accessory boards and more, making easy work of setting up a new prototype.  polarized connectorThere's no need to worry about accidentally swapping the SDA and SCL wires on your breadboard. The Qwiic connector is polarized so you know you’ll have it wired correctly every time, right from the start.  daisy chain-ableIt’s time to leverage the power of the I2C bus! Most Qwiic boards will have two or more connectors on them, allowing multiple devices to be connected. Qwiic Micro, our smallest boards yet. A big solution for small projects.Each Qwiic Micro board includes one Qwiic Connector as well as a single standoff hole which reduces the size of a normal Qwiic board by more than a third. Qwiic Micro boards measure in a minuscule 0.75in. x 0.30in (19.05mm x 7.62mm).  Qwiic Line Of ProductsOur Qwiic line of products has grown to include powerful development boards, helpful shields, a vast array of sensors and much more. Qwiic CablesQwiic Development Boards
Qwiic GPS/GNSS Boards
Also available:Qwiic DisplaysThis is a carousel. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots. Qwiic Buttons and SwitchesThis is a carousel. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots. Qwiic Power and RelaysThis is a carousel. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Qwiic ConnectorsThis is a carousel. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.  Frequently Asked QuestionsCheck below to answer any questions you may have about using the Qwiic Connect System. Can I use Qwiic on my system?Absolutely. Qwiic is used on millions of boards all over the world. You can use the name Qwiic without royalties or attribution. Add a low-cost Qwiic connector to your board and your users will have access to an enormous ecosystem. The requirements to say that your board has Qwiic:
 Does the color of the connector matter?No. Black is the preferred color but we understand that white is the commonly available and cheaper color. If you’re producing a small volume of boards (<100), white is great. If you’re producing a large number of boards, consider using a black connector. Should I call it a Qwiic/Stemma connector?Probably not. The Stemma system confusingly supports both 5V and 3.3V. Does your controller or sensor run at 3.3V? Then it's Qwiic. Does your controller or peripheral run at 5V? Then it's Stemma. Pimoroni’s BME688 is a good example. Who is using the Qwiic connector system?The list is rapidly growing but here are a few:
Are you using Qwiic on your board? Let us know!  How much power can I use?The very conservative max current on a Qwiic cable is 226mA[1]. If you want to push it, 28AWG is good for up to 1.4A for chassis wiring “isolated, unbundled wire in free air, as per the Handbook of Electronic Tables and Formulas for American Wire Gauge.” We wouldn’t recommend pushing the cables to 1.4A, but hundreds of mA should be fine. What's the pinout again?All Qwiic cables have the following color scheme and arrangement:  Yellow = SCL What are the part numbers?The Qwiic board connector is part #: SM04B-SRSS-TB(LF)(SN) or equivalent. If you plan to incorporate a Qwiic connector on your own project we generally encourage using a black connector, but any color will work. The cable connector is part #: SHR-04V-S or equivalent. Here is an assembly drawing of Qwiic cable showing the pinout and wire colors. What about the INT pin?We deliberately chose four conductors to increase usability of the interconnecting cables, minimize the cost of the connectors and limit the PCB footprint. All boards with extra pin options (such as interrupts, address selection, power save mode, etc.) will have those pins broken out to 0.1" holes, so the end user can add extra connections as needed. How far can I run the Qwiic system?I2C stands for inter-integrated circuit, and we’ve got a tutorial dedicated to it here. The bus was designed to communicate between ICs on a printed circuit board, so it wasn’t really designed to go long distances. That said, we’ve successfully communicated with sensors and boards via I2C over 1 meter (~4 ft). The fastest and easiest way to extend the range of your I2C communication bus is to use the Differential I2C Breakout. The breakout uses NXP’s PCA9615 IC, which converts the two default I2C signals into four differential signals, two for SCL and two for SDA. The differential signals are sent over an Ethernet cable, which attaches to the breakout through the on-board RJ-45 connectors. The differential signaling allows the I2C signals to reach distances of up to 100ft while still maintaining their signal integrity!  What about my 5V board?We may implement a DC buck/boost board in the future, but for now Qwiic only supports 3.3V boards. Currently over 90 percent of our I2C products are 3.3V, and the technology market is accelerating this trend. How can I connect existing SparkFun I2C Boards?What if you already have a handful of SparkFun sensors and parts? We have been putting our standard GND/VCC/SDA/SCL pinout on all our I2C boards for many years. This makes it possible to attach a Qwiic Adapter that will get your SparkFun I2C sensor or actuator onto the Qwiic system.  Projects, Tutorials & Hookup GuidesWhether you are looking for help hooking up hardware, or you're just looking for project inspiration, take a look below. We are always trying to expand our library of projects and tutorials, so check back often or fill out the form above to be notified of new content. |
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