Monday, 24 November 2014

LUG 15.11.14



Present:  Mike Hull, Richard, Kieran, Kieran's Nan, Tony, Arthur and Jack.

Tony showed Windows 10 running on his laptop, that's right Microsoft Windows 10!! The book is now open as to how long he'll continue with Windows and when he'll revert back to Linux. There was a discussion around trying new things like operating systems and the perils of getting stuck in a rut with what you are most used to.

Jack showed his new gaming laptop, it's quite a capable i7 machine with 4Gb of dedicated graphics memory and an NVidia graphics adapter.  The difference from his old machine playing 3D games like Garrys Mod and DayZ is very noticeable.  Jack has done less development since getting it, but has been doing a lot more with Blender.  Here's a more recent screenshot of a model Jack made from scratch (its a weapon of course, a Scar H which is one of the weapons in Call of Duty, Black Ops II).  The thought of being able to 3D print something he's made in Blender is quite exciting for him.




Mike introduced the boys Richard and Kieran to their robot project.  I won't say too much about this tracked robot chassis other than it will have a RasPi for control. Hopefully we'll get a more detailed post about the specifications and ideas from the boys themselves in due course.  Suffice to say that the threaded rod construction and positioning of mounting brackets required careful measurement and use of a spitit level.  The boys worked well together and seemed to be very engaged in the project.

Here are two images of progress



Many thanks to Mike Hull for his hospitality.

Thursday, 20 November 2014

First midweek (evening) LUG meetup

Our first ever midweek (evening) LUG meetup took place at Ripon Road on Thursday 20th November. Started at 6.30, and finished at 10.15.

 Attending: Olly, Tony and Mike.

 Olly and Tony engaged in a marathon two hour podcast recording, stay tuned for the release date.

 I spent the time looking at emoncms from the open energy monitor project (Because) I have been sending room temperature data to Xively since it's name was cosm then pachube.

 The first post about the initial arduino attempts is here: here I can't believe it was two years ago! I want to set up a home automation system, probably using a Raspberry Pi, which can not only monitor items, but control them as well.

 More posts to follow, hopefully not two years later.

Saturday, 8 November 2014

LUG 8.11.14



Present:  Mike, Joe, Tony, Les, Ollie, Elizabeth, Arthur, Jack, Mike (2), Richard, Surly

Discussions on various topics including:
3D Printer issues past & present. (all)
Upgrading to Linux Mint 17 (compatability mode) with Grub issues on HP laptop which had been vandalised (monitor removed, ongoing saga) - attempted upgrade to XFCE - grub failed again. Tony deleted all previous partitions & created a new one then reinstalled Mate. Failed. Tony then created a separate boot partition and then reinstalled Mate. Failed again.  Next plan is to attempt installation via DVD. (next meeting with the loan of Mike's external DVD player, please). (Elizabeth & Tony)

Creating an automatic firelighter (mechanical).... novel ways to make a brew etc.... Scouts in mind. (Arthur)
Internet connection issue (Mike 2), Dell laptop, Windows 8.1. The manual input of the IP address fixed the issue.  Mike (2) then ran an anti-virus scan (freedrweb/cureit) to check for laptop issues generally. (2 threats were found).


Saturday, 25 October 2014

LUG 25.10.14



Present: Mike, Joe, Elizabeth, Arthur, Jack, Michael (2), Richard

Interesting discussions on various subjects including:

Difficulty accessing various Tradesmen who fail to arrive; 
Picks being the forerunner of Arduino's; 
Windows OS's; 
Photography - specifically the editing and enlargement of glass plate photographs in the mid 1800's as well as Cartes de Visite albums comparing to current Facebook social media; 
Wireless dongle variations, antenna strengths/capabilities; 
Reinstallation of grub on an HP Pavilion laptop failed yet again (having previously been successful).

Tuesday, 14 October 2014

MakerspaceFY1 and the 3D printer

We have received a 3D printer kindly donated via Liverpool Makerspace.

The printer arrived assembled, but in need of final adjustments and configuration.

Here is the information needed to do the final work.

The model is a RepRap Prusa-Mendel, pictured assembled here at reprap.org:-
http://reprap.org/wiki/File:Assembled-prusa-mendel.jpg

Assembly instruction at reprap.org here:-
http://www.reprap.org/wiki/Prusa_Mendel_Assembly

Excellent visual guide to assembly here (high Resolution):-
https://dl.dropboxusercontent.com/u/22464622/Prusa%20Mendel%20Visual%20Instructions%20%28High%20Resolution%29.pdf

or here  in standard resolution:-
https://dl.dropboxusercontent.com/u/22464622/Prusa%20Mendel%20Visual%20Instructions%20%28Standard%20Resolution%29.pdf

The has work  started with the re-alignment of the filament drive motor.
The  captive nuts on the vertical drive shafts have been adjusted.

More will be added here as the work continues.

Sunday, 12 October 2014

MakerspaceFY1 & LUG - Hot air rework station - computer repairs and much more

Present: Michael, Joe, Elizabeth, Arthur, Jack, Michael (2), Richard

Briefly:-

Michael de-soldered some surface mount components using this hot air reflow station followed by a discussion about various  soldering and de-soldering techniques.

Arthur Discussed the walking motion and personality of his robot,  servo velocities leading to synchronisation issues and compared tracked Vs bi-ped robots

programming using 3D software, 


NetFlix documentary about 3D Printers well worth watching.
Discussed how to go about the next repairs to our 3D printer.

How teaching techniques and methods are changing over time. 
Cheap arduinos from China 99p !

Using Win-AVR for arduino work - single stepping, register displays and simulations, 

job applications and availability  following graduation from University, highest paid jobs currently in Computer Engineering,  
education at home & abroad for the young traveller, Japanese visa difficulties,

Last week Elizabeth took home a fully operational Compaq desktop & TV monitor which subsequently failed  to display anything on the screen. 
Wiring was checked & ok. It appears that  after rebooting, linux mint had reset the monitor  resolution higher than the screen (an old Orion TV) could display  resulting in a blank display. 
Following on from this was a failure to set up wireless dongles (2 different ones tried) 

Mint kept misbehaving on each reboot until all the recently available updates were applied, after that, it left the resolution at the chosen setting, and the wireless dongle worked.


Elizabeths next issue was how to Reinstall grub2 from LiveCD, the installation had succeeded but had put the grub  boot loader in the wrong place. - This was happening on an HP laptop whose monitor had been vandalised. (see blog from last week).