Qwiic OpenLog Hookup Guide

Contributors: Nate, Toni_K, Ell C, Englandsaurus
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The Qwiic OpenLog has two primary pieces of software on board: the bootloader and the firmware.

Arduino Bootloader

You can treat the Qwiic OpenLog just like a SparkFun RedBoard when uploading example code or new firmware to the board. When uploading code, you will simply select the board in the Arduino IDE's menu under Tools > Board > Arduino/Genuino Uno.

Compiling and Loading Default Firmware onto the Qwiic OpenLog

Note: If this is your first time using Arduino, please review our tutorial on installing the Arduino IDE. If you have not previously installed an Arduino library, please check out our installation guide to manually install the libraries.

If for any reason you need to update or reinstall the default firmware on your Qwiic OpenLog, the following process will get your board up and running. First, download the Qwiic OpenLog default firmware. You can go to the Qwiic OpenLog GitHub Page or download via the button here:

Once you have the firmware downloaded, you will need to also install the following libraries into Arduino. If you are unsure how to manually install the libraries in the IDE, please refer to the link above.

If you haven't yet, connect your Qwiic OpenLog to the computer via a 3.3V FTDI board using the silkscreen labels as reference. Please double check the example circuit if you are not sure how to do this properly. For a secure connection, you will need solder headers to the FTDI pins. See our soldering tutorial if you need help here. Otherwise, you can simply apply pressure to the male headers at an angle. As long as you have contact between the FTDI and Qwiic OpenLog, code can still be uploaded.

If you have not already, unzip the default firmware folder and open it in the Arduino IDE. It will probably be in your Downloads folder under the following path:


Once open, select the board Tools > Board > Arduino/Genuino Uno and select the proper COM port for your FTDI board under Tools > Port. Upload the code by hitting the upload button.

That's it! Your Qwiic OpenLog is now programmed with new firmware.