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1  Using Arduino / General Electronics / Re: A brushless Motor? on: April 19, 2013, 10:49:46 am
If you did this you would be making a brushed motor.
Yours Simon M.
2  Using Arduino / Programming Questions / Re: MAX7456 On screen display - getting started on: April 19, 2013, 10:43:09 am
have a look at this site. Its in French.
http://f5mna.free.fr/Arduino.htm
Yours Simon M.
3  Using Arduino / Programming Questions / Sequential file naming on SD card on: January 27, 2013, 09:17:30 am
I'm struggling here a bit.
I want to write a fresh file each time the SD card is inserted.
e.g.
data0.csv
data1.csv
data2.csv

so I thought that something like
count++
fileName="data" & count & ".csv"
could work.
but this approach looks to be rubbish.
What is the correct approach?
Yours Simon M.
4  Development / Other Hardware Development / Re: Altium MEGA shield template on: July 23, 2012, 05:32:30 pm
Latest updates with more possible supplies added and part numbers

Yours Simon M
5  Development / Other Hardware Development / Re: Altium MEGA shield template on: July 23, 2012, 10:56:46 am
Noted Rob, I'll add that set to the next library release. ( Possibly later tonight)
Yours Simon M.
6  Development / Other Hardware Development / Re: Altium MEGA shield template on: July 23, 2012, 06:04:14 am
Umm, didn't show as I'd hoped. Now I'm awake, I've redone with the supplier link on the schematic.
Used Samtec parts:

SSQ-106-03-G-S /LL
SSQ-106-04-G-S /LL   

SSQ-108-03-G-S /LL
SSQ-108-04-G-S /LL   

SSQ-110-03-G-S /LL
SSQ-110-04-G-S /LL   

SSQ-118-03-G-D /LL
SSQ-118-04-G-D /LL   

SSQ-106-02-G-D /LL   
SSQ-106-03-G-D /LL

Arrow have the biggest range. Yet to find out from Newark if there database is out as as it has these parts as 2mm parts.
7  Development / Other Hardware Development / Altium MEGA shield template on: July 22, 2012, 05:24:50 pm
R3 MEGA version
Hope this is complete, If anyone can confirm the part No's for the connectors. Also displays in 3D
Yours Simon M.
8  Development / Other Hardware Development / Altium UNO shield template on: July 22, 2012, 05:23:24 pm
R3 UNO version
Hope this is complete, If anyone can confirm the part No's for the connectors. Also displays in 3D
Yours Simon M.

Small error on supplier crept in so corrected
9  Using Arduino / Programming Questions / Re: Memory creep any suggestions? on: October 30, 2011, 04:32:44 am
I have used the #include <MemoryFree.h> 'utility' and indeed when I go below 240 ish it dies. Why does is number go down over time? is the SP overflowing? I do expect the amount to drop through the program execution, but I can't understand why on each loop it gets less & less?  I do use arrays for averaging but these are reused on each full loop through. I might resort to storing raw data and calculate the other stuff when called.
Will clearing the arrays save memory, or will filling the arrays at boot to their max stop fragmentation?

Yours Simon M.
10  Using Arduino / Programming Questions / Memory creep any suggestions? on: October 29, 2011, 02:33:31 pm
I know my listing is a mess but it is work in progress.
It is yet another weather monitor with a simple web printout of current status, with averaging function on all readings,  saved to SD card with time stamp.

I seem to be suffering memory creep thus my program and data is crashing into each other. how can I reduce the overheads? I noticed that Long's and floats use 4 bytes each. I could use strings more but not sure if this would save much? (or even how!)
Yours Simon M.
11  Using Arduino / Programming Questions / Re: atmega328 on a Breadboard (8MHz internal clock) on: June 24, 2011, 09:25:02 am
Could this be why I too get the dreaded
"avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51 Pro Mini"
when using the "Pro Mini (3.3V, 8 MHz) w/ ATmega328" with a mega328P chip fitted?

Yours
Simon M.
12  Using Arduino / Programming Questions / Re: ftoa on: June 15, 2011, 08:37:54 am
Hi Martin,
Can you give an example of how to use?

Yours Simon M.
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