Member Since: December 10, 2008

Country: United States



Colorado born and raised, and I don’t plan on leaving anytime soon.


Product Vetter


Sparkfun Solid State Depot

Spoken Languages


Programming Languages

C, C++, assembly


Bachelors in Computer Engineering Technologies


Solving problems (most problems) and keepin' it real


Snowboarding, sculpting, drawing, collages, painting, philosophy, music (listening to, making and understanding), horror flicks, anything sci-fi, entomology, cymatics, chaos theory, world history.

Learn about the Propagand-Eye, a custom badge created for a soldering workshop at the Colorado Burning Man regional event, Apogaea.

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See the difference solder paste stencils make in homebrew PCB assembly, and we test out milled PCBs in the reflow oven.

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Troubleshooting our second homebrewed breakout for the MLX90393.

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A brief overview of the new Raspberry Pi-based data-logging web server from Atlas Scientific

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Make your own digital handpan drum using the Teensy Audio Shield and the Teensy's built-in capacitive touch inputs.

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A quick update on the SparkFun aquaponics system

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Reliving childhood memories through the magic of Legos and 3D printing.

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Check out the next chapter in the aquaponics automation saga. The project has moved beyond a small indoor system to automating an entire geodesic dome greenhouse full of many different systems.

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Learn how to build larger-than-life LED installations.

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A brief overview of the numerous internet-enabled devices I've used to monitor my aquaponic systems.

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In this week's Enginursday, Joel shows off his aquatic turtle habitat, complete with an above-tank basking area, automated lighting, and an aquaponic feeding system.

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Learn how data.sparkfun.com can help you not just collect data, but also use that data to make hypothesizes, see trends, and make adjustments to a variety of systems.

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In this week's Enginursday post, Joel discusses how he went about making a control box for a large scale interactive EL wire art installation.

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Learn how to make an amazingly entertaining laser show small enough to fit inside of a lunchbox.

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How to create a simple and cheap time-lapse rig with the Raspberry Pi.

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Introducing our new soldering tutorial series.

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With some LEDs, some acrylic, and a little know-how, you can create your very own LED light box.

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Give your old laptop new life with a little WiFi boost.

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With a few pieces of machinery, you can make your very own solder paste stencils to aid in surface-mount soldering.

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We try to answer all the questions you might have about open source hardware and the Federal Communications Commission.

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RGB Fiber Optics

Create an optical RS-232 link with an RGB LED and a color sensor.

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The SoundPuddle is an interactive environment of visual-acoustic synesthesia. Art and electronics come together to bring an experience of light and sound to those within its confines.

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A brief history of Solid State Depot, the Boulder Hackerspace.

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Photon Weather Shield Hookup Guide V11

March 2, 2017

Create Internet-connected weather projects with the SparkFun Weather Shield for the Photon.

MicroView Hookup Guide

December 15, 2016

A quick tutorial to get you up and running with your MicroView Development Board.

IOIO-OTG Hookup Guide

May 18, 2016

Get started using the IOIO-OTG with your Android device or PC.

Si7021 Humidity and Temperature Sensor Hookup Guide

May 5, 2016

The Si7021 humidity and temperature sensor is an easy to use, digital, low-cost sensor to aid you in all your environment sensing needs.

MP3 Trigger Hookup Guide V24

January 21, 2016

Incorporate sound into your next project easily with the MP3 Trigger.

Touch Potentiometer Hookup Guide

October 22, 2015

Learn how to use the SparkFun Touch Potentiometer to control lighting, volume or other inputs in your daily life.

SHT15 Humidity and Temperature Sensor Hookup Guide

September 17, 2015

The SHT15 Humidity and Temperature sensor is an easy to use, digital, temperature and humidity sensor all in one tiny package.

SparkFun Inventor's Kit for Photon Experiment Guide

September 3, 2015

Dive into the world of the Internet of Things with the SparkFun Inventor's Kit for Photon.

Soil Moisture Sensor Hookup Guide

July 23, 2015

A quick hookup guide and project to get you started with the Soil Moisture Sensor from SparkFun.

Building Large LED Installations

July 16, 2015

Learn what it takes to build large LED installations from planning to power requirements to execution.

SparkFun Inventor's Kit for MicroView

February 27, 2015

The SparkFun Inventor's Kit for MicroView follows our tried and true inventor's kit model, bringing you 11 simple yet fun experiments to introduce you to the SparkFun MicroView.

MCP4725 Digital to Analog Converter Hookup Guide

September 11, 2014

This is a quick hookup to help you get started with the MCP4725 DAC breakout board. This device allows you to send analog signal from a digital source, like the I2C interface on the Arduino microcontroller.

Mini FET Shield Hookup Guide

May 1, 2014

Learn how to hookup and use the FET shield for Arduino Pro Mini 3.3V. With this shield, you can control much larger loads such as motors or large LED strips without straining your Arduino's power.

Bubble Display Hookup Guide

March 7, 2014

Need a small, cheap, and easy display? These bubble displays are what you've been looking for. Learn how to use them in this hookup guide.

WiFly Shield Hookup Guide

February 4, 2014

How to get the WiFly Shield up and running.

OLED Display Hookup Guide

October 22, 2013

A simple hookup guide to get you started with the OLED LCD.

ITG-3200 Hookup Guide

October 22, 2013

Learn how to interact with the ITG-3200 Triple Axis Gyroscope.

Making Custom Footprints in EAGLE

September 27, 2013

This tutorial will show you how to make custom, 1:1 footprint for any IC in EAGLE.

How to Solder: Through-Hole Soldering

September 19, 2013

This tutorial covers everything you need to know about through-hole soldering.

Serial Terminal Basics

September 9, 2013

This tutorial will show you how to communicate with your serial devices using a variety of terminal emulator applications.

RN-52 Bluetooth Hookup Guide

August 29, 2013

A hookup guide to get you started with the RN-52 Audio Bluetooth Module Breakout Board.

How to Use a Breadboard

May 14, 2013

Welcome to the wonderful world of breadboards. Here we will learn what a breadboard is and how to use one to build your very first circuit.
  • You cannot change the operating voltage of the MicroView as it needs 5V for the OLED screen. However, you can use a logic level converter to connect the MicroView to 3.3V devices without damaging the attached device(s). That said, we often hook up 3.3V I2C devices and 5V I2C devices to one another with no issues since I2C is an open drain technology meaning that I2C master and slave devices can only drive these lines low or leave them open.

  • The BOM was roughly $10/kit. Not the cheapest. However, I feel that could be decreased if SMD LEDs were used. But that requires more pre-building before the event. The art grant received from Apo helped tremendously. The rest was paid for by myself and a few generous camp mates who pitched in.

  • Thanks for the reply. The environment in which Apo is held is not the most forgiving for handicap accessibility, but there are roads for bikes and carts.

    We use Gold Phoenix for all our PCBs here at SparkFun. They are a great business to work with. I just wanted to try some other options to compare.

    I’m leaning less towards counterfeit parts since we eventually got them working, but it’s certainly a possibility.

  • This breakout could, in theory, be used in a headset, but it would be rather large. You would want to design something around the bare module. Audio can only be streamed TO this module over Bluetooth, not over USB.

  • I have updated the image and the example sketch in the tutorial to match the MicroView Library examples using A3 instead of A2. Thanks for the feedback, and thanks for reading!

  • Ok, the library has been updated and pushed to the Arduino Library manager. Please install the SparkFun MicroView library version 1.0.2, which has the drawBitmap function.

  • I found the issue. The drawBitmap function was added to the MicroView library several months ago. However, I failed to update the tree on GitHub from which the Arduino Library manger pulls the library files. I will fix this when I get a chance. In the meantime, you can pull my version of the library directly from GitHub, here and install it manually vs through the library manger to get the drawButmap function to work properly.

  • Hello, this sensor acts more like a qualitative soil moisture sensor, sensing the presence of moisture or not. It is not necessarily a quantitative sensor that can give you an exact reading of how moist or humid the soil is. It is difficult to design a soil moisture sensor that can give you those quantitative numbers due to the varying different types of soil and their different conductive characteristics.

  • The sensors are placed on a peninsula in order to reduce parasitic heat from the rest of the electronics from affecting the temperature sensors.

  • You are correct, the Si7021 is a drop-in replacement for the HTU21D. You should be able to hot-air the HTU off and add the Si7021 no problem.

Magical Lapel Flower

Joel_E_B 12 items

Here is a supplies list for creating the Magic Lapel Flower...

Imp Weather Station

Joel_E_B 11 items

Parts for the Imp based weather station connected to...

Raspberry gPIo

Joel_E_B 8 items

For the Raspberry Pi GPIO tutorial


Joel_E_B 31 items

These are the most all of the parts I used in the Arduija...

Humidity-Sensing LED Flower

Joel_E_B 4 items

Wish list for the 21st Century Fashion Kit Humidity-sensing...