So this is the new personal site.
For a while I’ve been busy with drawing machines or jewellery, and each of those things have their own corners of the internet, but I’ve been neglecting the original one – www.euphy.co.uk. So this is...
View ArticleRewriting urls with mod rewrite and .htaccess, and wordpress.
Every time I do anything on this blog I run into this problem. UK2 (who host me) have one public_html folder for euphy.co.uk, and then subfolders for polargraph.co.uk and my other domains. This is...
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Kobo mini serial port
I’m building an alarm clock that will use a kobo e-ink reader as it’s interface and display, so I’ve been trying to figure out how to interface to it. I got a kobo mini just after christmas for £50....
View ArticleCheating on Windows 8
I really like Windows 8. I think it looks neat, and works well. And while the fullscreen/windowed duality often seems slightly embarrassing (control panel etc), I applaud Microsoft for being bold. And...
View ArticleAccessing raspberry pi by name rather than by IP address
I’m using a virgin media superhub that does DHCP, but doesn’t have any kind of DNS stuff in it. So I can ssh to my pi using it’s IP address, which is inconvenient because it makes me go and look the...
View ArticleGreen Frog Tape as a 3d printing surface
Kinda works, but the glue gets too soft over 90 degrees (C), and peels off! 80C seemed ok.
View ArticleCV on Raspberry Pi
OpenCV is a pain. I guess I’m just being a dolt, but I can’t get it working. I want to run a piece of software on my pi that will run my slow photo booth at the upcoming Edinburgh mini maker faire....
View ArticleInstalling OS over PXE on machine without USB/optical drive
I got a little second-hand Dell D430 laptop to use for my upcoming polargraph show. I’m actually really impressed, it’s a dinky little thing. No optical drive however, and installing an OS from a USB...
View ArticleJMyron – unsatisfied link is now satisfied
I was putting JMyron on a new machine, to use in Processing on Windows 8, and kept getting this: Exception in thread "Animation Thread" java.lang.UnsatisfiedLinkError: C:\Program...
View ArticleNew 3D printer
I’m building up a new 3D printer, a Mendel Prusa i3. I ordered a mechanical pack from Greg Colbourn on the eMaker site that included all of the hardware, rods, nuts and bolts, bearings, motors and a...
View ArticleCalibrating e-steps
Every time I have to do this, I forget what to do, and have a frustrating time. Because it’s simple. G91 – Sets the printer into relative mode. This is so that issuing: G1 E10 – actually moves 10mm. I...
View ArticleDelete a bunch of mongo databases at once
I know this is knucklehead stuff, but I never trust myself to do it without 10 minutes of practice beforehand: var dbs = db.getMongo().getDBNames() var prefix_to_drop = 'testdb_'; for (var i in dbs) {...
View ArticleBulk upload for Music Magpie and Ziffit
I’ve got a stack of CDs, but it occurred to me that I no longer even have a CD player. I decided to move them on using Music Magpie or one of those we-buy-your-old-stuff services. I didn’t expect to...
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Bose Soundlink Mini II vs Mass Fidelity Core
I asked for a Bose Soundlink Mini II for Christmas, because I wanted a way of getting music audible while I work, screen printing on vacuum tables. The vacuum is noisy. I figured a small speaker I...
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New settings for 3d printer
My hot end connector burnt out: And my LCD was behaving extremely oddly after that, so I bit the bullet and just got a whole new electronics package: RUMBA plus full graphic LCD, from ooznest.co.uk....
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Getting to grips with ESP32
I’m tinkering with the ESP32 board. There isn’t a loader that works with the Arduino IDE’s board manager yet, and I had a basic problem installing the board files following the instructions at...
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Coffee Boss day 2: Doing some work.
After PUBG last night, I spent a few hours trying to understand pandas and matplotlib. At 1:30am I called it a day. 10 hours into this task. Looking at:...
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Coffee Boss day 3: Looking for events
I don’t know how to do this bit. Not I don’t know technically, I mean I have no awareness of the nature of the tools and practice to look for events in a data stream, catergorise them, and present...
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Coffee Boss day 4: What am I actually trying to do
Matplotlib and pandas have a couple of fundamental principles that I’m not getting. There seems to be an odd mix of global and specific commands that go into expelling a graph and I’m not seeing the...
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Coffee Boss day 5: Further adventures
I’ve been doing a bit more work which is about: Analysis Finding an algorithm or treatment (I don’t know what the right word is… an analysis?) that will isolate significant changes to the weight of...
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