Santa Claus Impersonator

Member Since: March 28, 2016

Country: United States

Some fun project ideas using the SparkFun 9DoF Razor IMU. We'll touch on how to send data over Bluetooth and how you might start to use the board to rig up your own VR headset.

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Qwiic Proximity Sensor (VCNL4040) Hookup Guide

February 28, 2019

The SparkFun Qwiic Proximity Sensor is a great, qualitative proximity (up to 20 cm) and light sensor. This hookup guide covers a few examples to retrieve basic sensor readings.

Qwiic Joystick Hookup Guide

February 21, 2019

Looking for an easy way to implement a joystick to your next Arduino or Raspberry Pi project? This hookup guide will walk you through using the Qwiic Joystick with the Arduino IDE on a RedBoard Qwiic and in Python on a Raspberry Pi.

LuMini 8x8 Matrix Hookup Guide

January 24, 2019

The LuMini 8x8 Matrix are the highest resolution LED matrix available.

RedBoard Qwiic Hookup Guide

January 10, 2019

This tutorial covers the basic functionality of the RedBoard Qwiic. This tutorial also covers how to get started blinking an LED and using the Qwiic system.
  • That library relies on the SPO2 algorithm that we use from Maxim. Unfortunately, we don't really know exactly how it works (beyond the sensor measures changes in light absorption due to oxygenated blood). In my experience, the SPO2 readings can be inconsistent, but the heart rate readings should be pretty accurate.

  • Unfortunately, I don't know. The SAMD21 is an Atmel chip, so you should be able to do your own development with Atmel Studio.

  • You are correct. According to the Eagle files, they are 50 mil pitch (.05"); I heard my coworker wrong.

  • Those pins are for SWD; they are 50 (not 15... see reply below) mil pitch. In production, we use an Atmel-ICE programmer. You can use any similar product as long as it is AVR/SAMD compatible. As with all programmers, you are flashing the microcontroller... so yes, the bootloader would get overwritten. However, the bootloader is available in the Firmware folder of the GitHub repository if you need.

  • I have a request in for a description change to highlight that it is a 3.3V board and not a 5V board. Unfortunately, I didn't work on the board and I'm not familiar with the new bootloader, so I can't answer your other questions.

  • We do offer an RTC that we sell separately, that can be used with the Qwiic connector system that might be useful for you. Check it out here!

  • Ask and you shall receive... (well in this case at least,) we added the RGB LED to the features list. Thanks for the heads up on that!

  • I had a similar experience testing the BlackBoard on a Mac High Sierra with the older version 1.3 driver. However, the board only caused the Apple computer to reboot until the board is removed. I was able to reboot and update the drivers once the board was removed.

    You can download the version 1.5 driver here. There are instructions for updating the drivers in the .zip folder. Otherwise, you can also follow the instructions from the RedBoard Qwiic Hookup Guide.

    For the most up to date drivers, check the chip manufacturer's (WCH) website. Most of the pages are in Manderin, but if you use a Chrome browser, the Translate option that pops up works pretty well with translating the page into English.

  • Parsec is another good option; especially, for gaming or viewing videos [https://www.parsecgaming.com/]. It is primarily designed to connect to a gaming host computer though (it should work with most mid-level PCs). I tested it with my work computer and was even able to work on SolidWorks (there were some quirks rotating objects, but nothing too bad) and stream a video at the same time without any issues on a Pi 3. I tested Parsec with Fortnite and PUBG with a Pi 3B+, the setup works fine if you lower your graphics and there is a small lag from the server connection (3-5 ms with Ethernet); overall very playable (I averaged 30-45 fps).

    The installation is extremely simple:

    https://support.parsecgaming.com/hc/en-us/articles/115002699012-Setting-Up-On-Raspberry-Pi-Raspbian-

  • Support Tip: I recently had a customer contact us about the illumination profile of the RGB LED. These are the resistor values he recommended for an even illumination across the RGB colors.

    “I used a Texas Instruments OPT3001 to accurately measure the output as would be perceived by the human eye and used this information to create more appropriate resistors values: red: Lux=61.26; actual resistor value = 217 Ohms; Nominal resistor value = 220 Ohms green: Lux=55.24; actual resistor value = 4640 Ohms; Nominal resistor value = 4700 Ohms blue: Lux=53.34; actual resistor value = 2273 Ohms; Nominal resistor value = 2200 Ohms.”

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