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This is where I sometimes write posts about fun projects that I’m working on.

MCN 2016 Workshop

Posted by on Oct 23, 2016 in Arduino | 0 comments

MCN 2016 Workshop

At today’s workshop, we’ll follow a series of small projects using parts from our kit. We’ll copy and paste code to see what it does. Then later, we’ll dive into the inner working of the code. Finally, we’ll make something on our own with the combined parts. If you prefer to download all the files at once, please download this .zip file. Installing the Software Download the latest Arduino IDE software. Follow the Adafruit instructions to install the software and the Adafruit boards. Careful. Windows can be...

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Raspberry Pi Photo Booth Projector

Posted by on Sep 2, 2016 in Raspberry PI | 0 comments

Raspberry Pi Photo Booth Projector

Intro This is a companion application to my Raspberry Pi Photo Booth. Sometimes at events, there is no access to the internet. But, I still want to share photos with the event attendees during the event. When taking photos, the photo booth itself does show the most immediate photos in the moment to the users. But, without an internet connection to post online, there was no way to share with the larger event group. So, I developed a way to use a second Raspberry Pi connected to a projector. It simply creates a slideshow of the available photos...

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MCN 2015 Workshop

Posted by on Nov 4, 2015 in Arduino | 0 comments

MCN 2015 Workshop

At today’s workshop, we’ll follow a series of small projects using parts from our kit. We’ll copy and paste code to see what it does. Then later, we’ll dive into the inner working of the code. Finally, we’ll make something on our own with the combined parts. Installing the Software Download the latest Arduino IDE software. Follow the Adafruit instructions to install the software and the Adafruit boards. Careful. Windows can be tricky. We will also be using NeoPixels. Install the library with the instructions...

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Arduino Pumpkin

Posted by on Oct 29, 2015 in Arduino | 0 comments

Arduino Pumpkin

Make your pumpkin more interactive. Get the code on Github. Default program softly changes color hue automatically Hit the state button, then use the potentiometer to change the color hue yourself   Wiring Diagram...

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Raspberry Pi Radio

Posted by on May 24, 2015 in Raspberry PI | 0 comments

Raspberry Pi Radio

Turning an old radio into an AirPlay radio with a Raspberry Pi. Intro This past spring I bought an old radio on eBay. None of the electronics worked, but the dial to change the channel tuning still spun. I wanted to setup a system in my home where I could play music remotely from my iPhone to the radio. AirPlay was an obvious choice, since we have many iOS devices. I also wanted to replace the electronics in the radio for better sound. The Parts An old radio sold for parts. Check antique stores or eBay for your favorite. Make sure it is big...

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Raspberry Pi and Flickr

Posted by on May 22, 2015 in Raspberry PI | 0 comments

Raspberry Pi and Flickr

I recently modified my photo booth to now post one image to Flickr. I used a Raspberry Pi B+ and a single button. A nice simple experience. See the code here: https://github.com/drumminhands/drumminhands_piFlickr Thanks to SirMo76 for the cover...

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MCN Workshop Part 6

Posted by on Oct 30, 2014 in Arduino | 0 comments

MCN Workshop Part 6

Soon, we will break for the free form section of the workshop where you can customize your project in your own way. But before we do, let’s review some tricks to think about while you work on your project. Pace your time Plan something that you can accomplish given the timeframe we have left. Start small, get that working, then iterate something other idea building on the last, get that working, and so on, and so on. Time will fly. Help your Neighbors Work on your project, but help answer questions from those around you. Through out...

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MCN Workshop Part 5

Posted by on Oct 30, 2014 in Arduino | 0 comments

MCN Workshop Part 5

On the previous parts, we wired a simple input button and next wired NeoPixels for flashy output. Now we’ll combine both input and output. Interactions We will need a fresh blank sketch. Go into the File menu and choose New. Copy and paste the following 257 lines of code./* Created by chris@drumminhands.com Modified by combining these tutorials Blink without Delay http://www.arduino.cc/en/Tutorial/BlinkWithoutDelay State change detection (edge detection) http://arduino.cc/en/Tutorial/ButtonStateChange Adafruit Strandtest...

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MCN Workshop Part 4

Posted by on Oct 30, 2014 in Arduino | 0 comments

MCN Workshop Part 4

On the previous part, we got the GEMMA receiving input from a simple button. Now, we’ll work on only output from the GEMMA to control some fun lights. NeoPixels First, unplug the GEMMA from your computer. Then, take out three alligator clips: yellow, red, and black. Now, attach the clips as below: Yellow from GEMMA DO to NeoPixels IN Red from GEMMA Vout to NeoPixels PWR Black from GEMMA GND to NeoPixels GND NOTE: Be careful when you clip. Only get a small bit of the NeoPixel ring. If you put the clip on too far, it may touch other...

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MCN Workshop Part 3

Posted by on Oct 30, 2014 in Arduino | 0 comments

MCN Workshop Part 3

Now that we know the goodies in our kits, let’s start to put them to work. The first thing we’ll do is get a button to light up—the stereotypical first thing to do with an Arduino. It’s good for us, because it will confirm all the parts are working without having a super complex system yet. Simple Push Button Light First, unplug the GEMMA from your computer’s USB port, if you have it plugged in. Then, open the Adafruit Arduino software, if you don’t have it open yet. Go under File and choose New. A blank code...

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