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SparkFun Qwiic Shield for Arduino

The SparkFun Qwiic Shield is an easy-to-assemble board that provides a simple way to incorporate the Qwiic Connect System with your Arduino-based device. This shield connects the I2C bus on your Arduino to a series of SparkFun Qwiic connectors and provides the circuitry to convert the 5V given to the 3.3V required by I2C boards in our Qwiic system. As long as your devices are on different addresses, the Qwiic system allows for daisy chaining, meaning you can stack as many sensors as you’d like to create a tower of sensing power!

The Qwiic Shield has four Qwiic connection ports, all on the same I2C bus, as well as a large prototyping area to design and make your own unique circuits. The shield also has a few 3-by-1 rails to help with prototyping, as well as buses for ground, 5V and even 3.3V. We have included four mounting ports in the same design as our Qwiic sensors, allowing you to affix your small board to the top of the shield.

This shield is a great retrofit for any Uno you may have. What a solder free solution? Skip the shield and checkout the SparkFun BlackBoard which has the Qwiic system built in!


The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


Note: This includes R3 Arduino headers, but they are not pre-soldered onto the board, so some assembly will be required when putting the shield together.

  • 1x SparkFun Qwiic Shield for Arduino
  • 1x Arduino Stackable Header Kit -- R3
  • 4x Qwiic Connection Ports
  • Large Prototyping Area
  • 3-by-1 Prototyping Rails

SparkFun Qwiic Shield for Arduino Product Help and Resources

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Core Skill: Soldering

This skill defines how difficult the soldering is on a particular product. It might be a couple simple solder joints, or require special reflow tools.

1 Soldering

Skill Level: Noob - Some basic soldering is required, but it is limited to a just a few pins, basic through-hole soldering, and couple (if any) polarized components. A basic soldering iron is all you should need.
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Comments

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  • Agree with the above. There's also the problem that the HV SDA and SCL signals are connected to A4 and A5, not the SDA and SCL pins meant to be used since the R3. Using A4 and A5 means that this shield won't work with the Leonardo and the Mega.

  • Am I missing something? Why doesn't this use IOREF for the high-side voltage, which is put there specifically to allow shields to be used interchangeably with 3V3 an 5V Arduino varieties? Sure, I can rewire some things, but it makes no sense to do it this way.

  • "This shield is a great retrofit for any Uno you may have." I have tried this on several genuine Unos, and it doesn't fit right. The larger USB connector on older Unos prevents this shield from seating properly. This board would be SO much better if it had considered the USB connector cutout on most shields, and using the dedicated SDA/SCL pins instead of A4/A5.

  • "This shield is a great retrofit for any Uno you may have." is simply not true. This doesn't work as a Qwiic shield on boards like the Turbo. However, I think the prototyping area is better than what is provided on the actual ProtoShield that is sold.

Customer Reviews

3.8 out of 5

Based on 4 ratings:

Currently viewing all customer reviews.

Does what's on the label

It's fine. Does exactly what's on the label. Nice to have the proto space in addition to the Qwiic ports. It would have been nice to have more buses/groups-of-3 and accommodations for TO-92 transistors, and perhaps to have both 5V and GND near both sets of IO port headers.

Nice concept, but under-delivered on promises

Granted, I failed to see that this was designed for the Arduino Uno's specifically. However, the design choice to route QWIIC I2C bus's SDA and SCL to A4 and A5 (respectively) was, in my opinion, a bad move. This design choice essentially limits use of this shield to strictly the UNO platform. If you are a DUE user, such as myself, then this shield IS NOT for you. I had to utilize the protyping area to create my own I2C bus, and then tie back into the DUE's SDA and SCL. If the I2C bus was routed to the SDA and SCL pins, instead of A4 and A5, then the DUE's SDA1 and SCL1 could have been used. A jumper to allow the user to select either the SDA/SCL or A4/A5 pins on the headers would be nice for future revisions.

My first I2C/Qwiic experience

The stackable headers are good quality, similar to the Uno (unlike the relay shield v2.0 flimsy header pins). The shield works, tested with Qwiic OpenLog so far, and passes through at least ground and 5v pins that I have tested.

One bad note: this is clearly tested on the Redboard, not the Uno with the large USB jack. There is a slight cutout on the board to avoid resting on the power barrel jack (where it says Qwiic shield printed on the PCB), but no such cutout on the other side for the USB jack. The board rests directly on this jack and prevents it from mounting evenly across all pins.

Easy to assemble and works great!

After only a few minutes of soldering (even with my limited soldering skills) I was able to interface this shield with both my SparkFun Redboard and my Arduino Uno and collect data using the atmospheric sensor and 3-axis accelerometer Qwiic sensors that I purchased along with this. I've been using this set up for a few weeks now, and everything is working great.