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1  Using Arduino / General Electronics / Re: building and arduino breadboard and I need 3.3v on: June 21, 2011, 05:36:46 pm
So Mike,

Connect the 5V as the input to the 3.3V regulator, and use input (between 5V and the middle pin)  and output (crossing 3.3V and ground) 100 uF capacitors?

I'm a newbie....

Bill
2  Using Arduino / General Electronics / Re: building and arduino breadboard and I need 3.3v on: June 21, 2011, 02:00:17 pm
When I used a 5v voltage regulator I used a 10 uF capacitor on the input middle pin and a 10 uF capacitor on the output side between power and ground would I need the same configuration for a 3.3V voltage regulator?
3  Using Arduino / General Electronics / Re: building and arduino breadboard and I need 3.3v on: June 21, 2011, 09:51:08 am
yeah,

I'm moving from an UNO onto a breadboard.  I already have a 5V voltage regulator on the breadboard, how would I add the  7803?
can I do this with a few capacitors and resistors off the 5V line?
4  Using Arduino / General Electronics / building and arduino breadboard and I need 3.3v on: June 21, 2011, 02:54:11 am
all,

I followed the directions at http://arduino.cc/en/Main/Standalone and i works great but I need 3.3v.  What would I need to add to get a reliable 3.3V setup for two sensors bmp085 and hhsomethingorother...

thanks,

Bill
5  Using Arduino / Installation & Troubleshooting / Re: switching from usb to wall wart stops sketch on: June 17, 2011, 10:59:13 am
This is why I'm a newbie!   

Thanks!  I'm outputing AC!  Time for some new wall warts. :-)

Bill
6  Using Arduino / Installation & Troubleshooting / Re: switching from usb to wall wart stops sketch on: June 17, 2011, 10:52:02 am
I'm doing some experiements and here is what I've found:  I've gotten REALLY simple, so I have an arduino uno with an LED tied across pin 13 and ground.  I'm turning it on and off every 1000 ms (delay(1000)).  I have two wall warts a 9VAC 600mA wart and a 10V 500ma wall wart.

When I plug in the usb cord I get a nice slow blink on the led; unplug and use the 9v wart and I get a furiuos blink, so fast that the led doesn't have a chance to fully brighten.  With the 10V wall wart the on light on the arduino looks like its pulsing and again furious blinking.  I've also notice pulsing of the on switch with  9V wart but it's more pronounced on the 10V.

Some questions, do I have two bad wall warts?  Is there a way to just power the arduino from the USB without computer connections?

I want to eventually go to batteries, but I want to test my setup for a few weeks on power just to get it working, then reduce the power consumption.

Help?

7  Using Arduino / Installation & Troubleshooting / Re: switching from usb to wall wart stops sketch on: June 16, 2011, 11:24:17 pm
arduino uno
8  Using Arduino / Installation & Troubleshooting / Re: switching from usb to wall wart stops sketch on: June 16, 2011, 11:13:57 pm
my external libraries are freqcounter wire and newsoftserial could one of these need a USB?

The xbee is using newsoftserial on pin 2&3 and their is not other reads or writes.
9  Using Arduino / Installation & Troubleshooting / Re: switching from usb to wall wart stops sketch on: June 16, 2011, 11:11:47 pm
I measured the 5V and I got a degraded result (4.4V) so I found a 10V wall wart and now I'm dead on 5V.

I tried the touching ground test and nothing happened.  plug usb in it works, unplug with external power it stops.
10  Using Arduino / Installation & Troubleshooting / switching from usb to wall wart stops sketch on: June 16, 2011, 10:47:01 pm
Newbie here,

Just worked out my sketch to eliminate all serial output to the serial monitor and I inserted a 9V 600amp wall wart into the arduino uno and when I pull the usb connector the output stops.  I'm transmitting sensor data over pins 2 & 3 using newsoftserial to an xbee radio and reading it with another arduino.

any reason my sketch doesn't run when I don't have a USB?  I tried to put a 10K resistor between 0 & 1 (TX and RX) which was a suggestion I saw somewhere else.

Suggestions?

Bill
11  Using Arduino / Networking, Protocols, and Devices / Examples of Xbee code for arduino to arduino communication? on: June 12, 2011, 12:41:02 am
I've been looking all around and I can't seem to find and example of an xbee connected to an arduino sending data to another xbee running on a second arduino receiving the data.  I'd like to set up a set of sensors with xbees communicating to an ethernet connected arduino with an receiving xbee which writes to a website.

I've found many examples of ardunio xbee communicating with terminal emulators on PC's. 

I've found examples of python pc's communicating to xbees using API.

what i'd really like to find is a simple xbee arduino code for sending api data and a simple xbee arduino code for receiving it.

is this available?
12  Using Arduino / Networking, Protocols, and Devices / Re: newbie with a code question for combined DHCP/DNS/NTP on: May 30, 2011, 11:12:31 am
Thanks!  That fixed it.  Yup, I'm playing and learning; so I'll try to minimize the strings and I'll work on learning about functions.

Bill
13  Using Arduino / Networking, Protocols, and Devices / newbie with a code question for combined DHCP/DNS/NTP on: May 30, 2011, 02:02:42 am
I've combined a number of code segements and libraries to achieve a combination of DHCP/DNS/NTP.  I'm working to add a client connection to a website to allow a PHP/MYSQL database to be updated from the arduino.

As I'm layering code, what would seem the easiest addition, that of a client call to a web site, in this case google fails to compile for:

master_ether.cpp: In function 'void loop()':
master_ether:211: error: 'client' was not declared in this scope
master_ether:216: error: 'client' was not declared in this scope

Could anyone provide a suggestion?
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