459MHz UHF legal Tx and Rx - Arduino based programability.

[thundead]

Yup that seems right since the tx rx pins go straight into the arduino IC. It should follow the standard FTDI layout anyway :)

Mihai.

[papa_lazerous]

I'll find out soon enough  ;D

[thundead]

Wish you luck :D I'm currently trying out a different FHSS algorithm. we'll see how it goes :D

[JoeBloggs]

Aaa oki, thought that was it.
Think I saw one of those on the flytron website aswell so I can might aswell get everything in one go. Does that adapter in your post has a mini usb port?

Cheers,
Mihai

saw this video, is this what you were asking about?
OpenLRS Rx v2 Programming

[Devonian]

OpenLRS just keeps getting better...

Now with MultiWii 'copter control embedded in the Rx code, just add components as required.

http://www.youtube.com/watch?v=1Yco_i9vtnk

From Flytron forum
http://forum.flytron.com/viewtopic.php?f=7&t=4&p=1794#p1794

Nigel.

[thundead]

Hmm interesting but I think it;s a bit overkill for the atmega 328... better have stand alone controllers in my opinion :)

OpenLRS just keeps getting better...

Now with MultiWii 'copter control embedded in the Rx code, just add components as required.

http://www.youtube.com/watch?v=1Yco_i9vtnk

From Flytron forum
http://forum.flytron.com/viewtopic.php?f=7&t=4&p=1794#p1794

Nigel.

[ghost2212]

What frequency does the V2 reciever run at?

Thanks

Brett

[thundead]

Can run any frequency in the following ranges: 433-470 or 868 - 915 Mhz.
Uk firmware runs on 459Mhz

Here is the datasheet for more info: http://www.flytron.com/pdf/RFM22B.pdf

Mihai.

What frequency does the V2 reciever run at?

Thanks

Brett

[ghost2212]

Can run any frequency in the following ranges: 433-470 or 868 - 915 Mhz.
Uk firmware runs on 459Mhz

Here is the datasheet for more info: http://www.flytron.com/pdf/RFM22B.pdf

Mihai.

What frequency does the V2 reciever run at?

Thanks

Brett

Sorry what I meant is what clock frequency the atmega runs at?

[thundead]

lol it's an 328p clocked at 16mhz :)

Can run any frequency in the following ranges: 433-470 or 868 - 915 Mhz.
Uk firmware runs on 459Mhz

Here is the datasheet for more info: http://www.flytron.com/pdf/RFM22B.pdf

Mihai.

What frequency does the V2 reciever run at?

Thanks

Brett

Sorry what I meant is what clock frequency the atmega runs at?

[ghost2212]

lol it's an 328p clocked at 16mhz :)

Can run any frequency in the following ranges: 433-470 or 868 - 915 Mhz.
Uk firmware runs on 459Mhz

Here is the datasheet for more info: http://www.flytron.com/pdf/RFM22B.pdf

Mihai.

What frequency does the V2 reciever run at?

Thanks

Brett

Sorry what I meant is what clock frequency the atmega runs at?

But if its running at 3.3v then surely thats above the safe threshold that atmega recommend on their datasheet, according to that you need 3.86v to run at 16mhz. We put 16mhz on the DIY boards we are doing but cant get the first one to program(though we did burn the pcb a bit)

Thanks

Brett

[thundead]

you could try supplying 5v to the atmega and see if it works. it should run at 3.3v ok as well.

check your tracks as well might be something wrong there. ALso , the ICs dont come with a bootloader. So you need to burn a bootloader onto them before you can load any arduino code.

[Badger]

Does anyone know of a good source of 459mhz antennas? I'm working on designing and building an STM32F4 (with hardware FPU, much much faster than the ancient avrs) based receiver using chibios RTOS, with inertial sensors and an RFM22B, and would like to do some proper testing rather than with the 433Mhz antennas I have so far!

[thundead]

there you go mate http://www.firstpersonview.co.uk/antennas/433459mhz?zenid=f2o2tks3o1bmvu3i6puhu6iv74 :)

Does anyone know of a good source of 459mhz antennas? I'm working on designing and building an STM32F4 (with hardware FPU, much much faster than the ancient avrs) based receiver using chibios RTOS, with inertial sensors and an RFM22B, and would like to do some proper testing rather than with the 433Mhz antennas I have so far!

[ollyb]

Hi All

Just been reading this thread with interest as I'm planning on getting into FPV (and possibly autopiloting). Seems there are a multitude of options for TX and RX (not thinking about video freqs at the moment), but 459 seems to have great range and is two way too.

I'm seeing a lot of talk about patch antennas, so was wondering if the EIRP rule applies to the 459MHz freq. For those that don't know, the EIRP (Equivalent Isotropic Radiated Power i think) is the power needed to produce the strength of signal that you've got using a patch antenna (for example) but by using an omni.

For example, if you've got 100mw tx and an 8db patch, to get the strength of signal the patch produces but by using an omni, you'd need 160mw tx. (number picked out of the air, but you get the idea.

In the UK, wifi frequencies, for example, are limited to 10mw EIRP, which basically means sticking a yagi on a 10mw tx makes it illegal.

Does the same rule apply to the 459MHz band. It would be bad to go to all this effort to remain legal if sticking a patch on it makes it illegal!