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Mike Beardmore
644 followers -
Creator & Curator.
Creator & Curator.

644 followers
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Having to use up some poor quality filament I decided to print this very nice articulated Pangolin model designed by amaochan on Thingiverse (2064359). The full size model took around 6 hours in total to print on the Mendel90 at 40 mm/s and the articulations worked flawlessly straight off the print bed.

The filament was Prima white from Amazon and is very brittle, breaking when left in the printer overnight and the flow is not consistent during printing. Unfortunately I bought a number of 3mm filament reels of the same range in other colours so I am working my way through them producing low quality demo pieces for our workshops.
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Just received our new mold injected hotend socks :)
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This week, the road to 4MHz. The 6502 was introduced in 1975, running at 1MHz. And 1MHz machines were shipped throughout the 70s and for a surprisingly long time - the C64, famously the best selling home micro, was produced up until 1994. But what's this? The Laser 128EX from 1987, an Apple II clone with a 3.6MHz CPU, which forced Apple to respond next year with the 4MHz IIc plus.
And on the way there, in 1981 Acorn's Beeb ran at 2MHz, then the second processor at 3MHz in 1984, and in 1985 the Master Turbo came with an internal 4MHz coprocessor. From Acorn User's Acorn has revealed the Master: "First on the expansion path is the Turbo, with a second 65C102 processor giving a claimed speed increase of 66 per cent, with 44k usable memory. The upgrade costs £99."
But if you cared to buy a third party upgrade for your Apple II, even in 1982 you could exceed 3MHz - see
https://en.wikipedia.org/wiki/Apple_II_accelerators
And that's by no means the limit, because well before the C64's SuperCPU we had one-off chess machines running at 18MHz in 1984! And if you really want to get some computation done, these days you can hook a Raspberry Pi to your Beeb and exceed 200MHz.

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Raspberry Pi + RPi Camera (a real old one) + mosquitto (mqtt) + node.js (reception of mqtt images , writing to different files) + imageMagic => awesome animated gifs of plant growth !!

Sorry about huge size and bad image quality and scanlines, the camera does not like the led lighting (I am surprised green actually looks green...)
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Cluster two in progress. I am going to make this one a lot simpler.


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Fast drone/multicopter prototyping with Lego

We've all seen the wave of new multicopter drones during recent months, and even in spite of new regulations and what seems like a trend towards market saturation, new designs keep popping up. Now new company Flybrix is offering kits for building your own multicopters - and they are designed to be easily customizable with standard Lego bricks:

https://flybrix.com/

On the electronics side, the main control board is an Arduino compatible 96Mhz ARM Cortex-M4 processor, with some additional sensors useful for flying (e.g. a barometric pressure sensor). The software is open source and available through GitHub, so you can modify it to your linking (for adding extra features like cameras, robot arms etc.).

As a nice side effect, if you crash your drone, parts will most likely come apart at the point of the standad press-fit connection, so you should be able to repair it quickly and without extra tools (unless you snapped some cables).

I'm looking forward to what people will create with this kind of flying platform...

#drones #diy #maker #lego #flybrix 

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My cluster hardware is now up and running. I had a few hiccups on the way. The main one being the MAC address on these dongles end up all being the same. I added the following to /etc/network/interfaces for each of the PI zeros.

auto eth0
iface eth0 inet dhcp
hwaddress ether [unique mac address]

Now that's it's running I can move on to the next step which is playing around with software.

http://www.thingiverse.com/thing:1790344

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