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226  Forum 2005-2010 (read only) / Interfacing / Re: Reset command on: February 09, 2009, 04:36:35 am
hmm yea the code does work, but
now i can't load any sketch to the arduino anymore..
It does reset itself that quick that the sketch
can't get uploaded...

What can I do?

227  Forum 2005-2010 (read only) / Interfacing / Xbee and Mesh Network on: September 04, 2008, 10:13:23 am

So I got some experience with the Xbee modules. They do work great.
But at the moment I only got two working so one is sending data to
the other one vice versa.
But now I would like to set up a network of Xbee's. For example I need
to put a Sensor far a way from the Computer. So I have to put several
Xbee's between the Sensor and Computer to transmit the Data. Do I
need for every Xbee a Microcontroller?

Or better, does someone have experience in this?

228  Forum 2005-2010 (read only) / Interfacing / Re: Ethernet Shield and MySQL on: February 01, 2009, 02:39:01 am
hey guys

That's exactly what I want to do, write to a MYSQL DB.
Different Arduinos with Sensors should write theire data
to an DB...
Can someone explain me how to set this up? Or give me
some tips?

Thx in advanced
229  Forum 2005-2010 (read only) / Interfacing / Re: phone and Arduino some progress but need help on: August 26, 2008, 02:20:00 am
Now I got a problem with the SoftSerial. i tired to send codes
to my phone over the SoftSerial but without success.
 Example of SSerial2Mobile libary

Sends a SMS and an email
The SMS phone number and the email address need to be changed to something valid.

 created 21 June 2008
 by Gustav von Roth

#include <SoftwareSerial.h>
#include <t630.h>
#include <AFSoftSerial.h>

AFSoftSerial mySerial =  AFSoftSerial(3, 2);

char message[20]="Hallo Test 2";
char number[20]="0123456789";

t630 phone = t630(2,3);

void setup() {
  pinMode(13, OUTPUT);
void loop(){ }

This code should be ok or not?

230  Forum 2005-2010 (read only) / Interfacing / Re: phone and Arduino some progress but need help on: August 24, 2008, 12:44:33 pm
nice, so at the moment I can  turn off the phone by this code smiley

void setup() {
void loop(){ }

So what I've done..
I connected know the wires directly to the phone and that was the solution!

I always tried to connect through this phone connector:

But it didn't work. So is this connector maybe a TTL to Serial converter?

Thx a lot for your great help!!!!


231  Forum 2005-2010 (read only) / Interfacing / Re: phone and Arduino some progress but need help on: August 24, 2008, 10:26:17 am
I got a Sony Ericsson. I got the connectors here ....
232  Forum 2005-2010 (read only) / Interfacing / phone and Arduino some progress but need help on: August 23, 2008, 04:08:55 am

At the moment I'm trying to get my Sony Ericsson working on the Arduino.
So what have I done:
I got a Serial cable for the phone. I plugged it into my PC and connected through the Terminal. At commands work great. The I cuted the cable to see the wires. Ok there were 6 wires. But 3 where useless.
I got now 3 cable to the serial port and it does still work. I found out that one is the RX cable. (To test that I sent the code to turn off the phone. First with this cable connected and the disconnected this cable. Both time it worked but once I didn't get the OK message from the phone so it should be the RX cable… Should be right or did I miss something?)

Now how do I detected the Ground cable and the TX? ok 3 cables so 50:50 smiley

But one of the important question:
When I like to connect the phone with those 3 wires to the Arduino do I have to use a Serial to TTL converter? I think so because as I tried to connected my Garmin GPS I had to use this as well… or am I wrong

233  Forum 2005-2010 (read only) / Interfacing / Re:  Thermocouple on: October 01, 2008, 02:35:20 pm
Would be very nice!

In another thread you've mentioned that you've used a balloon for something. Did you also measure the temperature at high altitude?

234  Forum 2005-2010 (read only) / Interfacing / Thermocouple on: October 01, 2008, 11:07:09 am

How can I connect a  T-Thermocouple ([ch8722]185C to +300C) to arduino?
Maxim doesn't sell those kind of converter or did I miss something?

235  Forum 2005-2010 (read only) / Interfacing / Re: Temperature Sensor on: October 03, 2008, 09:23:45 am
-55 deg is more or less enough -80 would be much better but I haven't found a solution for the arduino yet to measure that low temperature...
Do you have any ideas?

236  Forum 2005-2010 (read only) / Interfacing / Re: Temperature Sensor on: September 26, 2008, 01:29:59 am
hmm Ok thx a lot...
I got the DS18B20 and this one goes to -55C..

I have to checkout those Thermocouples...

237  Forum 2005-2010 (read only) / Interfacing / Temperature Sensor on: September 24, 2008, 04:01:51 pm

There are a lot of temperature Sensor that can measure high temperature but I do need one that can measure low temperate at around -70 Celsius.
(It should be accurate between +30 and -70 Celsius)
Does someone know one?

238  Forum 2005-2010 (read only) / Interfacing / Re: Temperature Sensor DS18B20 and producing some heat on: October 01, 2008, 11:07:49 am
Thx for the advise! I will check those Heat Sinks...

239  Forum 2005-2010 (read only) / Interfacing / Temperature Sensor DS18B20 and producing some heat on: October 01, 2008, 09:20:00 am

I got two questions so:
Does someone have experience in using the DS18B20 Temperature Sensor? I tried measuring the Temperature
in our fridge. It took over 20 minutes to measure the right temperature.
Could the reason be that in the fridge is no Air that circulates around the sensor? Or is it something different?

I do need my Arduino in a very cold environment (-30C). I will put it into a Styrofoam but I have to produce
some heat inside this case. I do use a 2s Lipo so how can I produce enough heat so that the Lipo is not freezing smiley ?

240  Forum 2005-2010 (read only) / Interfacing / Re: How to measure Lipo voltage? on: September 22, 2008, 03:06:34 pm
Sorrry does work a cable was in the wrong place smiley

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