Thursday, 4 May 2017

To have windows open Excel in a separate window like Word does.

See the following link.
https://support.microsoft.com/en-gb/help/2636670/how-to-open-excel-files-in-separate-windows-in-windows-7

This worked on Windows 7 with Office 2010

Sunday, 9 April 2017

2017 JOTA Project. JOTASynth

Schematic









1st Prototype



Bill of Materials.














Item Designation Supplier Price Pack Size Price Each Qty Total
Potentiomeer R1-R6 Mouser $560.00 2000 $0.28 6 $1.68
PCB PCB Seeed Studio $546.00 300 $1.82 1 $1.82
Arduino Nano Nano Ali Express / Banggood $281.77 100 $2.82 1 $2.82
LM386 Module
Ali Express / Banggood $12.83 20 $0.64 1 $0.64
Hookup Wire for Speaker






SIL Pin Headers






9V Battery Snap
Ali Express / Banggood $10.80 100 $0.11 1 $0.11
0.22uF Electrolytic Capacitor C3 Mouser $26.25 250 $0.11 1 $0.11
9V Battery
Mouser $388.50 210 $1.85 1 $1.85
100nF 104 Capacitor C1 Mouser $6.20 100 $0.06 1 $0.06
1k Resistor ¼ watt R7 Mouser $23.00 1000 $0.02 1 $0.02
100k Resistor ¼ watt R10 Mouser $23.00 1000 $0.02 1 $0.02
470R Resistor ¼ watt R11 Mouser $23.00 1000 $0.02 1 $0.02
Speaker (estimate)
Ali Express / Banggood $533.91 400 $1.33 1 $1.33
1N4004 D1 Mouser $7.00 250 $0.03 1 $0.03








Total





$10.52

Sunday, 12 March 2017

UUID issue when moving or renaming virtual disks in Virtualbox.

From Linux command prompt.

vboxmanage  internalcommands sethduuid "/home/mal/VirtualBox VMs/Windows 7/Windows 7.vmdk"


Saturday, 8 October 2016

2016 JOTA source code for Bike Light

// 2016 JOTA project for Sydney North Region.
// Morse Code Timing - https://en.wikipedia.org/wiki/Morse_code

// Digispark ATTiny85 Boot Loader

#define LED1 0
#define LED2 1
#define LED3 2
#define LED4 5

#define dit_time 200
#define dah_time dit_time * 3

void setup() {
  // put your setup code here, to run once:
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  flash(LED1, 500);
  flash(LED2, 500);
  flash(LED3, 500);
  flash(LED4, 500);

  flicker(LED1, 100, 4);
  flicker(LED2, 100, 4);
  flicker(LED3, 100, 4);
  flicker(LED4, 100, 4);

delay(500);

//Morse

// J
dit(); dah(); dah(); dah(); letter_space();

// O
dah(); dah(); dah(); letter_space();

// T
dah(); letter_space();

// A
dit(); dah();letter_space();

word_space();


}
// Sub Routienes

// Morse Dit
void dit() {
  all_on();
  delay(dit_time);
  all_off();
  delay(dit_time);
}

// Morse Dah = 3 x Dit.
void dah() {
  all_on();
  delay(dah_time);
  all_off();
  delay(dit_time);
}

// Letter Space = 3 x Dit
void letter_space() {
  delay(dit_time * 3);
}

// Morse Word Space
void word_space() {
  delay(dit_time * 7);
}

// All LEDs On.
void all_on(){
  digitalWrite(LED1, HIGH);
  digitalWrite(LED2, HIGH);
  digitalWrite(LED3, HIGH);
  digitalWrite(LED4, HIGH);
}

// All LEDs Off.
void all_off(){
  digitalWrite(LED1, LOW);
  digitalWrite(LED2, LOW);
  digitalWrite(LED3, LOW);
  digitalWrite(LED4, LOW);
}

// Flash LEDx on for a duration of wait.ms.
void flash(int pin, int wait)
{
  digitalWrite(pin, HIGH);
  delay(wait);
  digitalWrite(pin, LOW);
}

// Flicker LEDx for period wait n times.
void flicker(int pin, int wait, int times)
{
  int i;
  for (i = 0; i <= times; i++) {
    flash(pin, wait);
    delay(wait);
  }
}

Sunday, 7 August 2016

Installing Arduino + Digispark on Linux Mint18

This was a little challenge. Where would we be without Google.

The advice on the Digistump website did NOT work.


1. Install the Arduino environment. https://www.arduino.cc/en/Guide/Linux

2. Install Digistump additional hardware https://digistump.com/wiki/digispark/tutorials/connecting

3. Per https://digistump.com/board/index.php/topic,106.msg106.html#msg106

Create a file named /etc/udev/rules.d/digispark.rules with the following line in it:

SUBSYSTEM=="usb", ATTR{idVendor}=="16d0", ATTR{idProduct}=="0753", MODE="0660", GROUP="dialout"


4. Add permission for dialout so other Arduino boards will work. 
https://www.arduino.cc/en/Guide/Linux#toc9

sudo usermod -a -G dialout <username
>

where <username> is your linux user name. You will need to log out and log in again for this change to take effect.


Note: To reload the udev rules use: 
sudo udevadm control --reload-rules

JOTA 2016 Bike Light.

The project this year is a bike light.

The project uses previously purchased bezels,

The original circuit was a transistor oscillator driving 3 LEDs from a 9v Battery.

Like all things, I can resist making the programmable.

The 2016 version uses an ATTiny85 microprocessor based module based on a Digispark variant,
http://digistump.com/products/1

It contains 4 ultrabright red LEDs. The flashing of the LEDs is programmed on the microcontroller.

The JOTA version is from http://www.banggood.com/ATTINY85-Mini-Usb-MCU-Development-Board-For-Arduino-p-971122.html

This board is not shipped with a boot loader. A programing board with pogo pins will be used to pre-program each board with the correct firmware and fuse settings.

The hex file which contains the USB boot loader and the bike light program can be downloaded from here.

Fuse settings are:  efuse:0xfe hfuse:0x5f lfuse:0xf1
These settings disable the reset pin functionality in order to obtain 4 outputs for the LEDs

The Arduino programing environment, along with the digispark hardware add-on to the IDE is used to program the device.

This link has instructions for setting up the development environment.
 https://digistump.com/wiki/digispark/tutorials/connecting

There are additional unused holes on the PCB to accommodate different style ATTiny85 modules available. Care needs to be taken during assembly to use the correct holes for the modules purchased.

There is also a row of 4 holes providing the option of adding a grove style header for additional inputs and outputs.






Source Code: (Draft) To have morse added for JOTA weekend.

#define LED1 0
#define LED2 1
#define LED3 2
#define LED4 5

// Digispark ATTiny85


void setup() {
  // put your setup code here, to run once:
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(LED3, OUTPUT);
  pinMode(LED4, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  flash(LED1, 500);
  flash(LED2, 500);
  flash(LED3, 500);
  flash(LED4, 500);

  flicker(LED1, 100, 4);
  flicker(LED2, 100, 4);
  flicker(LED3, 100, 4);
  flicker(LED4, 100, 4);

}

void flash(int pin, int wait)
{
  digitalWrite(pin, HIGH);
  delay(wait);
  digitalWrite(pin, LOW);
}

void flicker(int pin, int wait, int times)
{
  int i;
  for (i = 0; i <= times; i++) {
    digitalWrite(pin, HIGH);
    delay(wait);
    digitalWrite(pin, LOW);
    delay(wait);
  }
}



Saturday, 26 March 2016

Outlander Adventures. - Links and Nudge bar installation



Bumper removal 2014 Outlander

That was a mission!
Tips:
Remove the 2 under body protection panels  starting with the rear most panel beneath the engine.
Admire the location of the oil filter!
Disconnect fog light cable and headlight hose. There is a quick-release on the hose.




Installing an Aux input for the stereo

To enable Aux input press and hold the Info and Map buttons and find the menu.

Possible front parking sensor part numbers

8651A056 8651A056HA 

Close up photos

The LH connector is for the fog lights. The RH connector may be for the front parking sensors.


Thursday, 16 July 2015

JOTArduio - PCB Notes

Software: http://www.arduino.cc
Device: Arduino Nano w/ ATMega328

BOM -
Banggood: Arduino Nano


Element 14
Order Code Qty Ordered Mftr. Part No Manufacturer / Description
1458986 10 1N4001G ON SEMICONDUCTOR-1N4001G-DIODE, STANDARD, 1A, DO-41
1855563 60 C5SMF-RJS-CT0W0BB2 CREE-C5SMF-RJS-CT0W0BB2-LED, 5MM, RED, 2.2CD, 621NM
2401736 70 MCMF006FF2200A50 MULTICOMP-MCMF006FF2200A50-RESISTOR, METAL FILM, 220 OHM, 1%, AXIAL
1191741 10 RK09K1130C79 ALPS-RK09K1130C79-POTENTIOMETER, 10KB
2568243 10 VT90N1. EXCELITAS TECH-VT90N1.-LDR, 200KOHM, 80mW, VT900 SERIES
4511189 10 MJTP1230 APEM-MJTP1230-SWITCH, TACTILE SPST, 50mA, THROUGH HOLE
2135916 10 MCKPM-G1205A-3706 MULTICOMP-MCKPM-G1205A-3706-TRANSDUCER, THRU-HOLE, 8V, 40MA
1302073 10 635 KEYSTONE-635-MALE OFF-BOARD BATTERY CONTACT
1302085 10 636 KEYSTONE-636-FEMALE OFF-BOARD BATTERY CONTACT
5019280 10 GP1604G-U1 GP BATTERIES-GP1604G-U1-BATTERY, ZINC CHLORIDE, PP3