Featured post

About the DCGLUG

images images (1)

DEVON AND CORNWALL GNU/LINUX USER GROUP

http://www.nikeairmaxfreedom.com nike air max 95


The aims of the Devon and Cornwall GNU / Linux user group are :

  • To help users of all ages / backgrounds find other users of GNU / Linux and Free software
  • To provide a friendly support network where questions of any level can be asked
  • To provide informal support, promotion and advocacy  to local people / business and industry with regard to the implementation and use of GNU / Linux and Free software OR to provide a links to people who can support this on a more formal level.
  • To provide support,  including promotion where possible to events or other activities in the region.
  • To provide access to support materials,  documentation and educational opportunities which help people use and learn about GNU / Linux & Free software.
  • Hopefully demonstrate there is a active and vibrant community and IT industry in the South West of the UK.

We run an active e-mail discussion list.  Please visit our join page for more details and a link to the mailmail sign up form.

We have an mailing list archive which can be viewed here.

We also run a IRC channel on freenode

server irc.freenode.net – Port 6667 channel #dcglug

Please see tutorials menu for help with setting up IRC.

 

F2FS and Kernel 4.16 file system improvements

F2FS Sees An Assortment Of File-System Improvements With Linux 4.16

This was posted to Diaspora earlier.   Anything that improves the filesystem is welcome, it does however look like the improvements are mainly for flash based devices such as SSDs.

http://www.tuxmachines.org/node/108636

Recent discussion on IRC suggests that F2FS also works on the Pi,  but is early days yet,.

Any file system hackers out there.

Penwith, Cornwall area meetup

Penwith, Cornwall area meetup

A pub meet up has been arranged for the Penwith area of Cornwall.   This will take place on the 3rd Feb 2018, at Station, House,  Marazion, Cornwall. Between 12 noon and 2pm. 

If you would like more information please contact Jay or Fraser via the DCGLUG mailing list.   But feel free to just turn up.

They will be in the corner near the table football.

Further meetings are planned starting with the 3rd March, which will be a bring-a-box, but this will be at a different location.

 



					

February 2018 events

February 2018 events

What Where When Contact
Exeter Raspberry Jam Rougemont Room,
Exeter library
EX4 3PQ
3rd February
10am – 1pm
2.Times Do
Torbay Tech Jam Rooms 10-12
Paignton Library
TQ4 5AR
10th February
12:30pm – 3:30pm
Torbay Tech Jam website
Cornwall Tech Jam TBC TBC TBC
Holsworthy LUG meeting White Hart Inn
Fore St, Holsworthy
EX22 6EB
17th February
2pm – 4pm
Neil on mailing list
Plymouth LUG meeting Hush Coffee & Sandwich Bar
1 Old Town St, Plymouth
PL1 1DA
24th February
12pm – 3pm
AndyW/Grant on list

List archives here

Any errors or omissions, please contact Michael via the list or ‘veremitz’ on IRC – channel #dcglug on Freenode network.

Arduino easy module shield

Arduino easy module shield

Arduino Sensor Shield

Equipment required:

  • Shield
    Arduino R3 uno
    Long nose pliers
    Scissors to open packet

Upon opening the packet,  you get a shield with a foam protective sheet. Fitting the board is easy(ish) partly as you need to align all pins carefully and if need be adjust the to suit the female header on the Arduino Board. Clasp 1 row of pins and move slightly, be careful doing this.

inspection of the board with the Label at the bottom the digital inputs are at the bottom (near to the power in) top row viewing this way you have analogue in then the power in/out sockets.

  • ax refers to analogue pins
    dx refers to digital pins

so on the left hand side

pins for vcc,gnd,sda & scl
below this going down 2x switches (d2,d3)
dht 11 (d4)
below this the reset switch.

Then there are 2 LEDs blue (d13) red (d12)

Potentiometer (a0)

just above this and to the right of the switches
is a tri colour LED (d9-11)

Next to this are 2x 3 blocks pins connected to (d7 & d8) along with vcc and ground pins in. Under this there is  a small buzzer connected to d5 and under that another 3 pin block with vcc,gnd and connected to a3 pin

finally on the far right hand side

serial (4x pins txd,rxd,vcc,gnd)
under that a IR led (d6)
under that light sensor (a1)
and lm35 temperature sensor connected to a2

So in all this is a pretty comprehensive board, the advantage with this is tht you don’t need to worry about wiring, you plug in the code, the components are labeled and tell you where they are connected so no messing around trying to find data-sheets or notes.

Upon connecting a usb lead for power to the Arduino the Blue LED same as the red LED on the Arduino board, which is by now covered up by the shield.

Quick test of the board using the Arduino blink example (modified)

/*
Blink
Turns on an LED on for one second, then off for one second, repeatedly.
 
This example code is in the public domain.
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;
int led2 = 12;
// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);
pinMode(led2, OUTPUT);   
}
 
// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  digitalWrite(led2, LOW); 
  delay(500);               // wait for 1/2 a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  digitalWrite(led2, HIGH); 
  delay(500);               // wait for 1/2 a second
}

 

October 2017 events

October 2017 events

What Where When Contact
Exeter Raspberry Jam Rougemont Room,
Exeter library
EX4 3PQ
7th October
10am – 12pm
2.Times Do
Torbay Tech Jam Rooms 10-12
Paignton Library
TQ4 5AR
14th October
1pm – 3:30pm
Torbay Tech Jam website
Cornwall Tech Jam Bodmin Library
PL31 2JX
14th October
10am – 1pm
Cornwall TechJam
Holsworthy LUG meeting White Hart Inn
Fore St, Holsworthy
EX22 6EB
21st October
2pm – 4pm
Neil on list
Plymouth LUG meeting Hush Coffee & Sandwich Bar
1 Old Town St, Plymouth
PL1 1DA
28th October
12pm – 3pm
AndyW on list

List archives here

Any errors or omissions, please contact Michael via the list or IRC #dcglug on Freenode.