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Author Archive | Shawn Wallace

Using the Lots of Pots Board for Raspberry Pi

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Here’s how to use the Lots of Pots Board for the Raspberry Pi. The daughterboard (or shield; what are we calling Raspberry Pi add ons these days?) sits on top of the Raspberry Pi and breaks out the various GPIO pins in a useful and labeled manner. It also has an 8 channel MCP3008 analog to digital converter on board, which is hooked up to the hardware SPI pins on the GPIO header. This tutorial will describe the features of the board and cover how to read analog inputs from the ADC.

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Algorithmic Ballyhoo: Using Processing to Make Hundreds of Unique Posters

MFBlogPost

This post describes a process I like to call algorithmic ballyhoo; using a Processing program to generate many different unique poster designs. We needed a poster for the Rhode Island Mini Maker Faire this year, so I decided to use a Processing sketch to do the work for me. Modern Device will be at the Mini Maker Faire, and will have a new Bytebeat-based kit for the soldering workshop.

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Algorithmic ballyhoo is nothing but sheer randomness without some sort of seed or design constraint. The Mini Maker Faire is embedded in AS220’s Foo Fest, and Xander Marro is this year’s Foo Fest artist-in-residence. Xander designed the Foo Fest posters (pictured to the right) and I decided to use the same elements in the Mini Maker Faire poster.

Read on for the Processing code. It’s pretty straightforward; the key is to use the processing.pdf library to record a printable version of everything you’re drawing on the screen. Then, just bring it to your local copy shop (or fine art large format printer). Remember that your drawing grid is at 72dpi. In the final PDF all graphics will be drawn as scalable vector art, but any included bitmap images will be drawn at screen resolution, so make sure any included PNGs are at least 4 or 5 times the final size, then shrunk down.


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Free Domestic US Shipping on Weekends

freeshipping

Starting this weekend, any order placed on a Saturday or Sunday (Eastern Time) will be shipped for free. Anything up to 13 oz. will be shipped USPS First Class; more than that will go USPS Priority. Please note that we’re only offering this to Domestic US addresses at this time. We’re trying this out for the Summer and will keep going if it’s popular.

New Product: Lots Of Pots (LOP) Board For Raspberry Pi

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LOP

The Lots Of Pots Board is a shield that solves some problems in working with the Raspberry Pi’s physical computing capabilities. It comes with an 8 channel analog to digital converter for reading potentiometers or sensors, and breaks out the GPIO pins and communication pins in a useful configuration. I wanted this board as an interface for making virtual synthesizers on the Raspberry Pi, but it will work well for other analog input sensors as well if you populate the board with headers instead of pots. If you’ve got a project that requires several analog and digital inputs, this board will save you a lot of time stripping wires and fussing with protoboard.

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