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Essef
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Posted by Essef: Sun. Jan 19, 2014 - 09:13 PM
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Hi
Please offer any hardware/software advice on the following concept.

I wish to RF control 10 independent leds at a maximum range of 200mts using a laptops numerical keys via rs232 and have decided on the nrf24l01+ from nordic with the pa/lna version at the TX end.

Once a key is pressed, then for example key 1 = led 1 would return data informing the user that it is indeed active and begin a time out sequence approximately ten minutes in length.

At this stage i wish only to verify the concept and test the hardware/software at a low level so if you have a similiar project in your toolbox and are willing to share i would much appreciate the kickstart.

At my disposal i have Atmega16/Codevisionavr demo/nrf24l01+

Thanks in advance.
Essef

My apologies to Moderators if this is posted incorretly.

Just like the Thunderbirds, Printf needs "Strings" yes

Tags:

AVR Microcontrollers, megaAVR and tinyAVR
Last Edited: Mon. Jan 20, 2014 - 02:05 PM
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Kartman
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Posted by Kartman: Sun. Jan 19, 2014 - 09:47 PM
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If you get yourself an arduino all of the hard work has already been done for you. The change to your plan is using a mega328 instead of a mega16.

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Essef
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Posted by Essef: Mon. Jan 20, 2014 - 02:13 PM
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Thanks for your advice Kartman

The arduinos would be overkill x 11 but i will look at the bare 328,s as it appears they are well supported via arduino software and ive already found a basic NRF test sketch, so now the journey begins.

One realization is that i need not tie a laptop to the system but can control each led signal with a simple push button layout.

? do i need a level converter for the 328/rs232 or is this handled internally by the mcu.

Essef

Just like the Thunderbirds, Printf needs "Strings" yes

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Bronze Markbobgardner
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Posted by bobgardner: Mon. Jan 20, 2014 - 02:24 PM
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Once again, this is jandled nicely by an arduino uno. You can talk to any terminal program on the pc right thru the usb connector.

Imagecraft compiler user

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Torby
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Posted by Torby: Mon. Jan 20, 2014 - 02:43 PM
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200 meters might be a little long for cheap NRF modules. You'll need a bigger antenna to go that far.

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