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Andy7:
24 Aug 2019 19:21:05
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Gaza07:
23 Aug 2019 19:26:42
I agree it does look a lot better for some reasom SMF shorten any recent posts display  :rolleyes:
Andy7:
23 Aug 2019 10:29:15
Nice! Looks loads better.  :beer2:
Gaza07:
22 Aug 2019 22:47:32
Sorted mate  ~~
Andy7:
22 Aug 2019 10:27:36
Sure. But basically, all the subjects are getting cut off.
Gaza07:
21 Aug 2019 18:14:54
Can you pm me a screen shot of what you mean
Andy7:
21 Aug 2019 12:15:41
Gaza - can you make the subject line section in the forum topic list wider? It's cutting off the subject field really short.
Andy7:
19 Aug 2019 09:14:20
Good for you!  ~~
DarkButterfly:
18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
Gaza07:
07 Aug 2019 19:52:01
ooooh mrs jones  :D
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3d - Printworx

Printing 3d Forum

Simple 2.4ghz receiver from a module

Started by teslahed, Thursday,September 26, 2013, 17:10:45

Previous topic - Next topic

teslahed

Thursday,September 26, 2013, 17:10:45 Last Edit: Thursday,September 26, 2013, 19:03:40 by teslahed
I have a 2.4ghz receiver module, one of these;

http://www.hobbyking.com/hobbyking/store/__26828__2_4Ghz_AV_FPV_Receiver_Arduino_Compatible_.html





which i am going to make into a receiver unit for FPV.

So far i have soldered a simple 5 volt linear BEC onto a bit of fibreglass perf board which will be used to power the receiver from a 2 or 3 cell lipo or similar.

http://www.multi-rotor.co.uk/index.php?topic=3323.0

Also I have replaced the cables with pins on the receiver module itself to allow me to solder it neatly onto the board.

Progress so far;



Next i added a 4 row dip switch in line with the receiver module pins used to select the channels. Since channel select works by connecting these pins to ground and since the next pin down on the receiver module is the ground pin i have connected this ground pin from the receiver module to the far (grounded) side of the dip switch panel all to the centre (ground) pin of the voltage regulator to keep things neat.

The next pin down on the receiver module from ground is the Voltage input pin so i';ve connected this directly to the V out from my voltage regulator.

I just need to sort the video out connections in order to test the thing. Unfortunately i need to wait for the right parts to arrive in the post...





More to come, watch this space!


One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Do you the receiver this should have a capacitor on it between the video output pin and the video out? The spec sheet doesn';t show one is needed but on my previous receiver module based project i used a 470uF capacitor between the video output pin and the video out socket - presumably to filter noise and improve the video signal? Is it worth putting one on this receiver module do you think?
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

I';ve soldered one in now anyway - lol.

Will it hurt to leave it in - shall i remove it?
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

It works;





I just need to wait on parts to arrive before i can make some better aerials for them.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

I';ve added some home made 2.4ghz cross polarised antenna. One with 4 lobes and one with 3. Just need some good weather to test them now...
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

Sunday,September 29, 2013, 17:36:11 #5 Last Edit: Tuesday,October 15, 2013, 14:37:42 by teslahed
I';ve been following this guide;

http://flitetest.com/articles/The_Skew_Planar_Wheel_Antenna

So far it seems fairly straight foward if a bit fiddly with the precision soldering and wire bending.

I will need to test these when the weather is better for flying and i imagine i will rebuild the aerials a few times before i am happy with them;







Please note - 2.4 and 5.8ghz labels the wrong way around - 5.8ghz is the smaller antenna :embarrassed



Unsurprisingly about twice the size of the 5.8ghz antennas.
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

I now have a metal box to put my 2.4ghz receiver in to. Should i earth the metal box?
One circlip short of a quadcopter.
 1 lobe short of an antenna.

teslahed

I see what you mean about the chasis mount SMA connector but i added a solder earth connection as well (just in case) as it should provide a better connection.





Just need to test fly the thing now!
One circlip short of a quadcopter.
 1 lobe short of an antenna.

Gav

nice and neat, Chris.   Nice little project you completed there!