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1  Using Arduino / Project Guidance / Re: eBay AD9850 DDS module using 2, I-Q generation for SDR on: October 25, 2013, 05:52:56 am
Need coverage up to 30Mhz, I-Q  freq to drive pair of balanced mixers into soundcard.
Need to prog up arduino to do, send serial data to both DDS modules with module 1 phase word=0, module2 phase word =90. both modules have same 32 bit freq data.
Im bit weak on C programming smiley-sad
2  Using Arduino / Project Guidance / eBay AD9850 DDS module using 2, I-Q generation for SDR on: October 24, 2013, 11:25:50 pm
I have a need for I-Q generation (0'+90')for SDR
Looking at using 2 eBay DDS modules with arduino board, LCD, rotory encoder, program to control DDS modules with control word for 0' & 90' phase output.
Have seen a few projects for single DDS module but not 2 for I-Q generation.
3  Using Arduino / Motors, Mechanics, and Power / Boost DC DC Converter 24v to 48v using Arduino as controller on: May 31, 2011, 10:16:09 pm
I have a application, need to convert 24 to 48 volts, looking at a boost switch mode circuit, would the arduino work to provied PWM and Volts in & out
looking for Ideas
4  Community / Local Groups / Re: Australia (anywhere) on: May 28, 2011, 06:41:59 am
Melbourne Hackerspace Community and ATA play with Arduino, developing a fan controller to move warm air in a room to a cooler room.
Dunno if any clubs or groups are active in OZ
5  Topics / Product Design / Re: Wanted: Arduino expert for Brisbane based Prototyping Project on: May 24, 2011, 05:23:55 am
Avoid the problems with Open Licencing and Developement, this space is for free. seek a embedded designer with AVR 168/368 microcontrollers, you can hire a designer on, many eastern european, south asian, developers bidding for projects around $300-500, its cheaper than using any Aussie labor.
Also by paying the bill you have 100% control, Arduino is not the place for commerical embedded design. we are here to tinker not make a income.
6  Community / Bar Sport / Re: Employment for Arduinoites on: May 18, 2011, 05:20:03 pm
The problem I see is some people want to profit from the good will of open source community.
I went to a ATA meeting there was a discussion of Web based Energy monitoring (user pays).
The guy giving the demo/talk seems to be chubby with hackerspace group and used some for developement of a power monitor based on Arduino and developed shild with zigbee RF link
The smarts connected to the Internet based on Open WRT Router.
Im very suspect when a for profit person seeking work/developement from a open source community.
If its for profit should not use open source, as it will distort the ethos of not for profit open source community.
At the end of the meeting i felt a bitter taste in my mouth, as you had to pay $$$ and to supcribe to the service you had to pay $20 per month for a web based energy monitoring service.
Ironic there is a better service from open source  web based energy monitoring, than the commerical based one smiley
7  Using Arduino / Programming Questions / Ethernet Shield V1.1 (ENC28J60 Chip) Problems finding code that works on: May 17, 2011, 05:58:07 pm
I have a older Ethernet shield (ENC28J60 chip), I find the current Ethernet Shield Librarys do not work, the examples for the V1.1 I have found do not compile with ver22 IDE program.

Can anyone point me to code that will work with the older V1.1 Ethernet Shield
8  Using Arduino / Project Guidance / Embedded Web Server, with DynDNS client on: April 27, 2011, 06:28:26 am
I have a application  using a 3G router with a Ethernet Port and  Ardunio Webserver, to give readings of analoug inputs (volts, amps, temp) to monitor remote solar powered equipment.

looking to set up a Arduino Webserver and provide a DynDNS URL as the 3G router does not support a fixed IP address.

Is there any DynDNS function for using the Ethernet Sheld, with a dynamic IP public address.
9  Topics / Home Automation and Networked Objects / DC Amp and Watt Hour meter, for Small Solar Power Setup. on: April 25, 2011, 01:31:41 am
Im a newbie, just joined up, im looking at using Arduino 2009 and LCD sheild, for a monitoring device for a small stand alone Solar and Battery setup at a remote location, would like to have some data logging to a SD Card and read later on a laptop.
need current range 0-20amps for charging current, 0-40 amps load current, looking at using iron core toroids and hall effect sensors for DC current Transformers, and resistors to scale 0-30 volts to 0-5 v analouge inputs
I have some ideas, but need some help to start.
Melbourne AU
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