Looking for links/info if such a device is available. It just needs to be discreet enough for modal use, put a selectable delay into a 6v supply and not be polarity sensitive.

TIA Rob.

Rob
We use these for another purpose
[link=http://www.ebay.co.uk/itm/Timer-relay-board-adjustable-10-100-seconds-in-10-second-steps-/110833008899?pt=UK_BOI_Industrial_Automation_Contr ol_ET&hash=item19ce298103]Timer Relay[/link]

The boards are 12v, but this is mainly due to the 12v relay it could be replaced with a 6v relay, there are loads of similar boards commercially available, they about the same size as a reciever.

If this dos'nt suit, if you let me know more specifics, time etc then I could make you one up easily enough, switching a mosfet instead of a relay would probably be better(smaller) for model use as well.

Yes, that's the sort of thing but as small and discrete as possible. It's to put individual strut delays into some scale electric retracts to give a more scale staggered retract sequence.

Rob.

Could you use the sequencer on the Powerbox Cockpit?

A few years ago I built a F1 style start lights system for a R/C Model Car track, if you are looking for one leg to go then the other etc, a modification of this timer circuit would work, but yes it should also be able to be done with a door sequencer.

I see the DX18 has this feature, each leg connected to individual channels through a electronic switch (same as you would normally use for lights etc), the radio then can be programmed for the delays.
As the DX18 is not available yet then the same thing should be able to be done with a door sequencer, just like it can control servos.

The retract units have only the two +pos/-neg wires, the signal is already taken care of by the gear ecu so only a requirement to put a delay switch into the power leads going to maybe 2 of the 3 units. Does the Powerbox just sequence the power supply to the retract units? I thought about a gear sequencer but I think they are just for conventional pneumatic gear?

Unfortunately I only have 1 Rx output left out of the 12 available for gear.

Rob.

Most door sequencers work servos, the jetronic one normally used with the electronic valves will work servos just the same way so you can just plug in electronic switches to control each of your legs.

The RCBEE sequencer works great

http://www.rcbee.com/index.php?Page=11

Hi Rob,
How about this?
http://www.electriflite.co.uk/store/...p/tr-rcs7.html
Regards,

John

Good link John, initially I thought this was what I needed but effectively I already have the sequencer in the gear ecu which I need to retain for the electronic travel limiters (to cut the power to each screw jack once the up/down locks are reached).

Surely there must be some kind of discreet time delay power relay available that does not require a servo signal to switch on/off, just electric power?

Rob.

I wonder if I Y lead the gear lead into both the gear ecu and sequencer switch but use the +/- output from the gear ecu to power the delay sequencer it will do what I need?

Rob.

Yes that should work as all you really need is a delay of each retract to start moving.

Just to confirm you would like when you flick the retract switch for one leg to start moving then after a preset delay the other starts moving?
If so then it can be done with a simple time delay circuit switching a mosfet, so long as the gear ECU dos'nt turn of the power to that leg if it senses no current.
Really what is needed here is a programmable Gear ECU

Yep, that's it, sounds fairly simple I suppose but I'm no electronics expert...more of a mechanical type. I would expect that as these electric retracts become more popular the demand from the scale guys would be there?

Thanks for the input.

Rob.

Hi Rob,

What you are trying to do will not work, if you introduce a delay on the ecu output, then surely the ecu will time-out before full movement. Motors stop by arriving to full travel or by time, 12 seconds.

We will launch a "profesional" ecu for all scale needs.

Gaspar

Good news and for what I need 12 seconds is plenty in the interim to make up for the shortfall in the current unit between now and when a pro version becomes available.

It would be good if any pro version could be programmed using the current fadec ecu data terminal for sequencing, time out period, low voltage failsafe, etc.

Rob.