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Buddha Buck
Attended University at Buffalo
Lives in Ithaca, NY
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Buddha Buck

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SCOTUS affirmed that same-sex marriage is a right.
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Was exciting! I assume you heard potus sing? ;)
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Tonight was the monthly Electronics Meetup at the Ithaca Generator, and I worked on the Concertina project. I have a modicum of success! I can now read a button, and play a MIDI note based off of it. I can even do that with two buttons! Yay!
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RIP you glorious gentleman.

I'd say he had a good run. And right now I imagine Satan reading the news, realising he's going to get his ass kicked AND be dethroned by the biggest badass of them all. 
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Last Wednesday I managed to get the Raspberry Pi to blink an LED under Ruby control. I'm used the Pi Piper gem instead of the WiringPi gem to do it; it seems to work better (and in a more Ruby-esque manner, as far as I am concerned).

The only problem I see with it which is affecting me so far is that the library does not automatically release the locks on the GPIO pins when exiting, nor does it provide a way to do so explicitly within the library. So the second time I run the code, it fails because it is unable to grab the GPIO pin. I can explicitly unlock it from the command line, but it makes the dev processes rough. There is a pull request on GitHub awaiting approval that fixes the problem, but there hasn't been a new release in a while. I'll probably hand-patch my installed copy to fix it.

I expect to have some time to work on it today. The goals today: (1) blink that light based on a button push. (2) Play a tone based on a button push. (3) scan a button matrix to play tones, aka, a mini organ.

I don't expect to get through all of them today, but I'll see how it goes.

Given that I also have a novel to read by Monday, things might be tight.
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This electronics stuff will really catch on when they build parts big enough to use...

In the never-ending Electronic Concertina project, I'm considering alternative ways to manage the buttons. I already know I'm going to be using a 6x8 switch matrix, I just need a way to read it. Previously I've done that "manually", in software, for a smaller 6x4 array on a 24-key demo piano.

Yesterday I had the idea to see if there's a pre-made solution, a chip designed to read matrix keyboards (the keyboard tech has only been standard for 50 years or so). And, lo and behold, there is!

I found several. They all will do the job. They are cheap (only about $2.50/ea in single-unit quantities). They are electrically compatible with the rest of the electronics.

They are small. The largest I've found is 4 mm square (about 1/6"), with 28 tiny little flat leads along the edges, on 0.4 mm centers. That's smaller than the diameter of the solder I have.

If anyone knows of a I2C matrix keyboard controller of a usable size, please let me know.
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I have hosed the ruby install on my raspberry pi (when you can't even run bundler because of version mismatch and dependency issues, you're hosed). Last night I spent a good chunk of the first Ithaca Generator Electronics Meetup trying to fix it, even going as far as trying to upgrade from Raspian to Debian Jessie.

In the middle of the upgrade, the storm took out the electrics in the building, casting us into darkness, and potentially ruining the file system on my SD card. I may have to start over again.

Fortunately, my concertina code, as it is so far, is on GitHub.
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Sounds like quite the adventure! 
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On Saturday I had time to attempt some GPIO stuff with the pi. I set up an LED to light up on the breadboard, and it failed, even when I tried connecting it directly to the power rails, not even using a GPIO pin. I also found out that my multimeter needs a new battery, so I wasn't even able to diagnose what was wrong.

On Sunday I had time to take it into the Makerspace, where there are working multimeters. Everything seemed to be wired up properly on the Pi Wedge, so it was baffling why things weren't working. Then I had an "aha!" moment: I had forgotten that on my breadboard, the power rails are split. If you look in the picture attached, you can see the red and blue lines down the sides are not continuous. Instead, there is a break in the middle (right next to the light glare on the left side, and partially obscured by the red wire on the right side). The power rail does not extend across that break. This allows this breadboard to have four independent power rails, if needed, but it can be confusing. In this case, I was connecting the Pi to the power rail in the lower right, but trying to use the power rail in the upper right.

The board in the photo is configured to light the LED using the GPIO pin labeled G18 on the wedge. When I set the pin high, the LED goes on. When I set it low, it goes off. Progress!

I also tested that I could see when an input pin went high or low, using the 24-button keyboard I built a couple of years ago (I just wired connected up enough for a single button to work). 

I'm not doing any GPIO from Ruby yet, but that's the next step: Getting a blinking light, then making a very expensive button operated light switch.
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Electric fail! I presume this is part of the electronic musical instrument project? Beyond that color me clueless ;)
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Have him in circles
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Buddha Buck

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When you receive emails from a website which someone signed up as a member using your email address (perhaps they mistyped theirs, perhaps they picked a random throwaway address which happened to be yours), would you feel it acceptable to screw around with their account? Cancelling it?

Last week Nicoise S used the car sharing service BlaBlaCar to hire Nancy to take him from Orleans to Paris (a 90 minute car ride for under 10 Euros, not bad), and both thought the trip went well. How do I know? I received the trip confirmation notice, the receipt (including about half of Nicoise S's credit card number), the reminder email, and the evaluation confirmation emails. 
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This happens to me constantly. There are two Susan Dennis's - one in Chicago and one in Georgia who use both my gmail address and my yahoo mail address (which I do not even use but have ported into gmail) constantly.

The Chicago one got married last year. I got a lot of her wedding receipts and even some of the stuff from her realtor about her new house. The Georgia one got a new dog and signed up for every freakin dog website in the world. PLUS got a new credit card and used my email address.

In the beginning, I tried to do the right thing. I tried to let the places know they were barking up the wrong susandennis tree.  But finally I just started screwing with as many as I can and want to.  It's now my hobby.
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I do not have dyslexia[1], so this is not directly pertinent to me. But I like the concept.

[1] That I am aware of. I have never had a reading problem, so I've never been tested to my knowledge.
From Dezeen:"What I wanted to do was recreate or simulate the emotions of reading with dyslexia to try and put across how frustrating it is to try and read something simple," Britton told Dezeen......
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An 18 minute documentary on who was killed in WWII, with links to interactive versions of the graphs they show. 
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Great breakdown 
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It's a gender bent, shot-for-shot "Upgoer-Five" remake of "Major Tom".
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Have him in circles
247 people
Sylvie Boutin's profile photo
Tersha Choy's profile photo
Jennifer Hamilton's profile photo
Jessica Brown's profile photo
Kevin Pelletier's profile photo
Jen Johnson's profile photo
Michael Ludgate's profile photo
Jon Alexander's profile photo
Handy Mesh's profile photo
Education
  • University at Buffalo
  • RIT
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Male
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Computer Programmer
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Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Ithaca, NY
Previously
Johnson City, NY - Binghamton, NY - Buffalo, NY - Cazenovia, NY - Johnson City, NY - Unadilla, NY - Vestal, NY - Endicott, NY - Endwell, NY - Oxford, NY - McDonough, NY
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