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

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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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My desktop PC is dead. I'm ordering a new CPU fan to see if that helps.

It's been locking up occasionally recently and not booting/rebooting well: It shuts down, gives the "I'm rebooting" beep, and then, nothing, not even a BIOS message. I have to hit the reset switch to boot it.

This morning it was locked up (on-screen clock read 00:07:01, so it was locked up for 6 hours), and when I rebooted it, it locked up again within a couple of minutes.

I suspected thermal issues, so I reboot it into BIOS mode, and watched the fan speed and temperature indicators. The CPU temp climbed as I watched it from 80C to 83C before I turned it off.

I've removed the CPU cooler, and I can't see through the fins on the heatsink for all the dust and crud. I'm fairly certain that's the problem. 

I'll take the cooler to work to clean it out with canned air, but I still ordered a replacement after-market cooling fan.
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poor computer :(
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The pi wedge came today. I forgot it was a kit. 78 soldered pads later, it's assembled. 

I was able to set the pi up at the makerspace and play menuet in G via Ruby. It's not configured to do it out of the box, but there's a small number of commands I have to automate on startup to do it. For some reason, running the ruby from the console crashes, but running from an X terminal plays well. I don't understand what's crashing.
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According to USPS tracking, my Pi GPIO breakout board (a SparkFun Pi Wedge B+) and Pi power supply are delivered, waiting for me at home. So I guess tonight I'll play around with GPIO, and maybe work on keyboard scanning.
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When I got home I started working on writing a Ruby code to generate MIDI to send to a software synth to play music programmatically (I used as a test the first line of JSB's Minuet in GMajor). Once I got it on my desktop, I committed it, and pushed it to github to make getting it on my pi easer.

After +kaaren kaaren went to bed, leaving me with the TV/spare HDMI monitor, I was able to power up the pi, configure it to talk to github, download the project, stumble through a bunch of configuration, etc, but eventually, and relatively easily, I was able to connect all the virtual wiring and heard JSB coming through my TV speakers.

The next step will be to solidify the pi's configuration so it'll work on power-up without lots of fiddling. Just plug it in, and run the ruby script. Then after that I'll have to wait for the GPIO breakout board to arrive. 

The goal will be by next week to have the 24-note button keyboard I put together a few years ago working with the pi. Hardware-wise, it should be a matter of connecting the existing board up to the GPIO on the pi. Software-wise, it'll be recreating the key-scanning and processing code I originally wrote for the Arduino.
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This is awesome.
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I made a really stupid thing that amuses me.
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We had a coworker goodbye lunch at Hawi Ethiopian restaurant today. Three of us split this vegetarian combo platter. 
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Eva- how's Marilyn? 
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Buddha Buck

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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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At the Makerspace tonight I got Ruby running on my Raspberry Pi. I have a GPIO breakout board on the way so I can plug it into a breadboard and experiment with the GPIO.

 The next goal is to the the Raspberry Pi to decode MIDI (or otherwise get it to make noise in Ruby-controlled notes). I can work on that while waiting for the GPIO board.
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Buddha Buck

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At brunch with +Eva Snyder today I told her about the documentary series on YouTube called "Every Frame a Painting". It's about various aspects of movie making and composition. I recommend it.
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Looks fascinating. Post it to the B_ channel please ?
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Buddha Buck

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Over on the Making Light blog, between various discussions about the current Hugo situation, a subthread cropped up about would exposure to the Elder Gods be as instantly-insane-making today as when Lovecraft was writing. There's some great bits to that discussion at the link below (I linked to the comment where it started to get really good, about #960 on that page).

On a related note, does anyone have a good distance estimate, and perhaps suggested driving directions, from Arkham to Castle Rock?
The 2015 Hugo finalists, v. 2.0. Posted by Teresa at 01:16 PM * 976 comments. We've shut down comments in the previous iteration of this thread because they hit the four-digit limit. Everything there can still be read, but new comments go here. Comments on The 2015 Hugo finalists, v. 2.0: ...
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Buddha Buck

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Have him in circles
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Education
  • University at Buffalo
  • RIT
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Computer Programmer
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Ithaca, NY
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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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