Model Boat Mayhem

Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: BlueWotsit on June 08, 2010, 05:39:44 PM

Title: Switch wiring problem
Post by: BlueWotsit on June 08, 2010, 05:39:44 PM
I have a non branded ESC in a boat just purchased. The wires to the RX are :

Orange
Red
Brown

If I plug the RX lead straight into the Receiver all works well - but obviously I would prefer to go through an on/off switch.

All the switches I have only have 2 wires on each side, red and black.

I've tried connecting the ESC lead such that Red >> Red, and Brown >> Black as this mirrors the normal settings when plugged into the Receiver.

But no matter what switch I use it doesnt work through a switch.

Questions are:

1. Are there on / off switches with all 3 wires - which brand are they if so ?

2. What does the Orange wire actually do ? 
Title: Re: Switch wiring problem
Post by: Martin [Admin] on June 08, 2010, 05:50:57 PM
That sound like the 'JR' servo wiring colours.

Brown  -Ve
Red +ve
Orange = signal.

Usually, -ve goes to the edge of the receiver socket and signal towards the centre.

The switch could be fitted to switch red and brown or even orange and red.
Title: Re: Switch wiring problem
Post by: BlueWotsit on June 08, 2010, 06:01:24 PM
Hi Martin

thanks for the info.

What doesnt make sense is that the rudder servo works, just not the throttle channel.

To eliminate duff channel etc, Ive tried different receiver / transmitter combinations



Andrew
Title: Re: Switch wiring problem
Post by: DickyD on June 08, 2010, 06:02:02 PM
Why not put the switch between the battery and the speed controller ?

You actually only have to put the switch in the red cable.
Title: Re: Switch wiring problem
Post by: BlueWotsit on June 08, 2010, 06:11:29 PM
Why not put the switch between the battery and the speed controller ?


Thats a good thought - funnily enough when I use Lead Acid batteries this is what I do - got to use NiMh with this ESC according to paperwork inside the boat - hence overlooking it.

I've a nice little switch panel doing nothing so could certainly give that a try - just hate being defeated on the other switch  <*<

cheers
Title: Re: Switch wiring problem
Post by: DickyD on June 08, 2010, 06:15:38 PM
Its what I've done on all of mine, battery packs or SLA.

(http://i124.photobucket.com/albums/p8/DickyD_photos/Sentinel/DSCF0045.jpg)
Title: Re: Switch wiring problem
Post by: BlueWotsit on June 08, 2010, 07:01:08 PM
thanks for the piccy, speaks a thousand words !

The switch unit is similar to the one I have in my work box, the only difference is the on / off toggles are built into the unit on mine


cheers
Andrew
Title: Re: Switch wiring problem
Post by: Bill D203 on June 08, 2010, 08:42:43 PM
Why not put the switch between the battery and the speed controller ?

You actually only have to put the switch in the red cable.
This is a good idea as long as the current in the circuit is less the the switch can Handel, if not Very hot switch in no time.
Why do you need a switch??? If you pull the lead off your battery JOB DONE!!  As long as the sticks on your TX are in the correct place when you turn it on and you reconnect the battery whats the problem??
Title: Re: Switch wiring problem
Post by: FullLeatherJacket on June 08, 2010, 08:54:55 PM
Blimey, Richard - that is really  neat!
Bill
DD's set-up will actually switch 16A, so it can handle a lot more flowing current.
BWotsit
Get the idea? Use a big switch in the positive lead from the battery to the ESC. This will turn the whole system on and off. Bill's approach is practical but you need to keep your fingers away from the prop when you plug in!
FLJ
Title: Re: Switch wiring problem
Post by: DickyD on June 08, 2010, 09:07:00 PM
Blimey, Richard - that is really  neat!

FLJ
Praise indeed Dave, even neater in the boat.

(http://i124.photobucket.com/albums/p8/DickyD_photos/Sentinel/DSCF0046.jpg)
Title: Re: Switch wiring problem
Post by: colin-d on June 09, 2010, 07:49:06 AM
i think i could do you a neat and tidy set up on the electrics aswell  :-))

but as most have said, just a switch in the positive cable from the batterie, and everything is switched off.

in my set up, theres even a charging socket next to the switch.
Title: Re: Switch wiring problem
Post by: BlueWotsit on June 09, 2010, 08:52:42 AM
This is a good idea as long as the current in the circuit is less the the switch can Handel, if not Very hot switch in no time.
Why do you need a switch??? If you pull the lead off your battery JOB DONE!!  As long as the sticks on your TX are in the correct place when you turn it on and you reconnect the battery whats the problem??


Pulling a lead off a battery is not always viable, particularly with larger boats

- correct switching is much safer and if located correctly means you dont have to take the boat apart whilst still in the water.

Fortunately the switch board setup I have is 15amp fused so should be adequate
Title: Re: Switch wiring problem
Post by: PMK on June 09, 2010, 02:30:31 PM
i think i could do you a neat and tidy set up on the electrics aswell  :-))

Yes, very sleek. Take a bough - or even a stern.
Just out of curiosity, where is the receiver?
Title: Re: Switch wiring problem
Post by: colin-d on June 09, 2010, 03:32:57 PM
I'll take a stern for the time being  :o

the receiver is between the steering servo and speed controller.