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1  Community / Gigs and Collaborations / Re: time stamp on: Today at 03:54:41 am
yes but what is the problem you are having ?
2  Using Arduino / Project Guidance / Re: Interfacing with rope leak detector cable? on: July 22, 2014, 12:08:22 pm
Bainesbunch - it looks like it's actually open, not zero ohms, regardless of whether it's under water or dried out.

I suspect that there is subtle change in resistance or it would not work this is also supported by the fact that you can just add more of the sensor strips end to end according to the manual. Are you using a DMM if so set the resistance range to the mega and try again. in the very high range you should be able to see a change just be putting your fingers across the sensor tracks.

Cheers Pete.
3  Using Arduino / Project Guidance / Re: Beginner trying to connect an Arduino board to a CAN bus... on: July 21, 2014, 01:51:27 pm
That CAN bus interface card will do the job for you . it has mounts for D9 connectors on the PCB. You can solder these your self and then go and get a D9 to OBDII interface cable from somewhere like protopic. there is a standard that is applied to this cable and so most of the reputable ones will work fine.

This is a good example http://proto-pic.co.uk/obdii-to-db9-cable/

You can (no pun intended) then install the CAN libraries and talk to the CAN bus.

I have several commercial products out in the wild that use the Microchip chip-set that is used in this shield. If you need a more in depth explanation let me know.


Cheers Pete.
4  Using Arduino / Project Guidance / Re: Interfacing with rope leak detector cable? on: July 21, 2014, 08:06:20 am
well the manual https://customer.honeywell.com/resources/techlit/TechLitDocuments/69-0000s/69-2495EFS.pdf does not seem to indicate that there is an existing way to read any signal from the device without hacking it about a bit.

First thing i would do is open it up and see what is there to work with.

Are you sure it is reading ZERO ohms and not open circuit   ?


Cheers Pete.
5  Using Arduino / Project Guidance / Re: cmath library error uploading to arduino on: July 21, 2014, 07:03:34 am
If I use the computer the code was originally written on everything works fine. But I am getting the following error trying to upload my program to Arduino using a new computer:

 ...\Arduino\libraries\T_Motor\T_Motor.cpp:13:17: fatal error: cmath: No such file or directory
 #include <cmath>

 I keep getting this error when I use the new computer. I thought that cmath was a common C++ library.

should that be  #include <cmath.h>

Note the "h"

Cheers pete
6  Community / Gigs and Collaborations / Re: arduino garden or room on: July 20, 2014, 08:42:17 am
i was wonering if there is a place were you pay to get a program smiley-eek smiley-eek smiley-eek smiley-eek smiley-eek

Yes, and this is it.. what is your budget ?

Cheers Pete.
7  Community / Gigs and Collaborations / Re: London based developer interested in UK based commerical collaborations on: July 12, 2014, 07:10:22 am
Did this move anywhere.

I got no response from my PM.

Cheers Pete.
8  Community / Gigs and Collaborations / Re: Paid gig - want to make a wireless switch (up to 3x DPDT type)...wireless on: July 12, 2014, 07:08:33 am
Hi Joe,

I have sent you a PM with my contact details on it.

Cheers Pete.
9  Using Arduino / Project Guidance / Re: SPI programing on: July 04, 2014, 12:11:38 pm
Use any pin for chip_select... but pin 10 MUST be defined as output..

According to this:

http://www.seeedstudio.com/wiki/SD_Card_Shield_V3.0

MOSI (Master out slave in) is pin 11.  This is what I would call output.  Am I missing something?

Also where can I find a more detailed reference for the SPI.h library?

Bob

Correct the MOSI is an output as is the CLK the MISO is an input but as the other have said to get the chip to work in SPI mode you MUST have the default pin 10 set as an output. The SD card is SPI and if you use an external one the you can use any pin. aside from the MOSI,MISO and CLK pins. Remember however that you can only have ONE SS pin active at any time they are mutually exclusive.

The SPI register is basically a  shift register as you toggle the CLK is shift out from the high bit onto the MOSI and shifts into the low bit the level on the MISO.

Cheers Pete.
10  Using Arduino / Project Guidance / Re: Completely turn on and turn off arduino on specific date time on: July 04, 2014, 10:58:47 am
OK so try the 555 timer option but use it to cut power to the WHOLE setup not just the WIFI shield.

Cheers Pete.
11  Using Arduino / Project Guidance / Re: 2.4 GHZ RC car on: July 03, 2014, 02:37:41 am
ok so have you tested if the 3v3 pin is delivering 3v3 on battery power ?

and that the 5v rail is delivering 5v to the pot
12  Using Arduino / Project Guidance / Re: 2.4 GHZ RC car on: July 03, 2014, 02:31:09 am
Hmmm OK . so if you load the stock "blnk" sketch does that run on the battery or only with the cable plugged in.

and where is the TX drawing its power from ?
13  Using Arduino / Project Guidance / Re: 2.4 GHZ RC car on: July 03, 2014, 02:12:45 am
If it is working when you use the power from the USB port (I.E. plugged in to your computer) and not from an external source. It is suggesting that there is an issue with either the wiring or the power source. What voltage is the power source and how are you connecting it to the NANOs

If you can some get some pictures of the way it is wired up that would help.

Cheers Pete.
14  Using Arduino / Project Guidance / Re: Completely turn on and turn off arduino on specific date time on: July 02, 2014, 11:49:53 am
it could still be drawing it power through the SPI programming interface or drawing parasitic power from other lines
15  Using Arduino / Project Guidance / Re: need some advise on: July 02, 2014, 09:03:31 am
OK so firstly what do you want to send to the phone. Are you sending a SMS or do you want to send data and have an application on the phone read that and then do something with it.

Is you phone Apple 4S or newer, if so then you can go down the BLE route if it is another phone the perhaps classic Bluetooth pairing your phone to the umbrella may be the way to go.

Cheers Pete.
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