Fitting other accessories

[farmerfred]

Hi,

I'm about to try and fit some sort of siren/alarm to my f550. Ours is a working drone used on a farm to keep pigeons on the move and Im going to add an alarm of sorts to create a large sound to move them on.

I've already thought ahead and installed a deans connector to the main board so i can switch between the zenmuse and siren and any other accessories when I want to.

But what I need help with is the receiver… I would like to make the siren controllable by a switch. I don't use the intelligent orientation control so i thought i'd use this wire from the receiver to control my siren box. But I'm not sure how? What voltage is likely to come from the receiver wire with the 3 wire plug? I'm guessing a low power 3-5v and so ill need a relay switch to then power the siren with 12 from the battery...

something like this:
http://www.maplin.co.uk/p/two-tone-mini-siren-ku65v
or this
http://www.maplin.co.uk/p/mk113-siren-sound-generator-kit-vt28f

and then i would use this small timer to control a 30s pulse of noise for example:
http://www.maplin.co.uk/p/mk111-adjustable-timer-kit-with-relay-output-vt27e

Any help appreciated here folks

 

[Flubbs]

hi there,

unless im very much mistaken the constant voltage from the receiver will be 5V, on the red wire which on a futaba is the middle pin, teh only problem is the current available from the receiver. i would think the best thing to do would be to wire the servo output on the receiver to a relay and use the relay to switch the power to the siren. that way teh receiver is protected and you have the full votage available from your battery for the siren.

cheers

steve

 

[farmerfred]

Hi Steve,

Thanks for this… I was guessing 5v from the receiver and I wouldn't dare power anything from it so Ill have to find a relay… Hopefully there are some 5v relay switches! And hopefully a relay won't draw too much current through the receiver!?

 

[OneStopRC]

Hobby King have a switch that works off of your RX, it will switch something on or off from a spare channel.

http://hobbyking.com/hobbyking/store/__46040__Turnigy_Receiver_Controlled_Switch.html

Here is the specs

[h=3]Plug it into your receiver and you instantly have an on/off switch controlled by any channel on your radio.
The Turnigy switch will complete a circuit when the radio channel passes 50%. Connect it to your flap or gear channel for an instant on/off switch!
Great for custom lighting, sound or effects projects, remote glow igniters, remote starter motors or even custom smoke machines. The possibilities are endless!
Specs:
Maximum throughput : 10A / 30v
Weight: 7g

PRODUCT ID: 9107000266-0[/h]

 

[farmerfred]

This looks excellent! Should be just right...