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16  Using Arduino / Networking, Protocols, and Devices / Re: Where to buy RFM22B RF Chip not the board on: February 21, 2014, 07:01:35 am
I fully Agree with you on the design part but what I am working on needs a smaller design, or at-least different config of components. and the RF69 module works at 2v up I need a module that works on 1.8v as that is the power I have available.

any other radio suggestions that works at 1.8v with minimum range of 800-1000 meters?
17  Using Arduino / Networking, Protocols, and Devices / Re: Where to buy RFM22B RF Chip not the board on: February 21, 2014, 06:32:51 am
Hi Riva

They dont have the RF22 chip. and i need a long range radio that has been proven to work with Arduino

I have looked into this section and asked them per email please give me examples of these units and they still replied with the completed boards, I don't want to order these things and get the wrong thing. have you ordered them before ?
18  Using Arduino / Networking, Protocols, and Devices / Where to buy RFM22B RF Chip not the board on: February 21, 2014, 06:00:27 am
Hi Guys

As the heading suggest where can I buy the components found on the RFM22B board to create my own layout of the board? I have emailed HopeRF and they just reply with links to the pre-made boards.

thanx
Rustie
19  Using Arduino / Networking, Protocols, and Devices / Re: RF question on: February 21, 2014, 05:46:05 am
You Would have to give each unit I an ID in the packet sent across, and the receiver would need to have the same id on the rx side.

I tried this with the cheap 433mhz ebay radio with some success but when in very close proximity the noise from all the radios washed out any comms and nothing worked. For this to work properly you would need to send a packet receive the packet buffer it switch of the radios that done and transmit again. this is to limit all the radios talking at the same time.
20  Using Arduino / Networking, Protocols, and Devices / AXSEM AX5043 RF Transceiver on: February 19, 2014, 03:54:14 am
Hi Guys

Out of interest and with limited background in RF design how hard is it to use / code a Chip like http://www.axsem.com/www/rfics/narrow-band/ax5043 with Arduino if no library is available for it. ?

The RF22B is a good choice and plenty of information to be found but I like the functions and power consumption of this chip more for low power devices.

Thinking of creating a UNO shield to test these units but first want to find out if it will work like intended with Arduino.

Thanx
Rustie
21  Using Arduino / Project Guidance / Re: TrackerDuino. Community development on: February 19, 2014, 03:49:16 am

Coffee is black.......
22  Using Arduino / Project Guidance / Re: TrackerDuino. Community development on: February 18, 2014, 02:18:41 am
Robin

I am not re-posting everything here that has been posted on the project home page.
please go and read it http://powerduino.blogspot.com/

thank you
23  Using Arduino / Project Guidance / Re: TrackerDuino. Community development on: February 17, 2014, 11:01:56 pm
as per the home page for this project , my expectations for this project is 1km.
24  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 17, 2014, 09:36:46 am
how far do you want to it pick up ? generally speaking the units installed in your car , is a very powerfull radio pushing out between 5-10W of RF power. for my application i would be looking at around 100mw so it would note work very well for car tracking but thats the beauty of it , once the project works nothing stops you from upgrading the unit.
25  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 16, 2014, 02:15:37 pm
Well your correct on both parts just different order . The tracker sends to base station and base station SMS the info the office .
26  Using Arduino / Project Guidance / Re: Arduino Mini GPS tracker. Community development on: February 16, 2014, 11:22:45 am
Robin

have you ever seen them put a Radio collar on an animal to track where they are ? well my application is to build the same thing but small enough to fit on the bird species I want to study (there isn't any small enough at the moment) and once it is developed nothing stops you from incorporating a screen on it and making your own" Garmin", sat nav or what ever you want the point here is it will be small enough to then port to any application and it would be Arduino powered . so you can do what ever you want
27  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:54:36 am
I'm confused  as to what just happened but I'm assuming we dealing with a cross threader . Mmm jimboZA can't you rather delete all the damn posts ?
28  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:36:56 am
Yes there might still be an issue with reference voltages but the converter should take care of that if correctly wired
29  Using Arduino / Project Guidance / Re: how to interface the rs232 to arduino uno on: February 16, 2014, 10:19:39 am
Hi Nelson

What voltage does the RS232 unit operate at? I had to use a TTL to RS232 converter to get the signals working correctly.
Something like this unit.
http://www.ebay.com/itm/RS232-To-TTL-Converter-Module-COM-Serial-Board-MAX3232-With-Dupont-Cable-/221372796843

hope you come rite
Rustie
30  International / India / Re: I want to built a multirotor drone on arduino ... need guidence on: February 16, 2014, 10:13:24 am
Hi rajatgaikwad

The resources should be available in India but if note Ebay does ship to India , well the bigger cities anyway.
the minimum amount of hardware that you will need to control the quad is the following.

Micro controller . ( Pro mini)
3 axil accelormeter
and a Wifi shield that can act as a AP. so your phone can connect to it.

this was a good example of one http://hackaday.com/2013/03/19/diy-arduino-pro-mini-quadcopter/ .

good luck with your project !
Rustie
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