Wireless trigger for studio lights

Update on the Yongnuo RF-603 trigger (Canon model). They do not work with Pentax at all. Even removing the control wire, they do not work. They only work a a wireless remote. Also be wary of sellers on eBay, these were advertised as Pentax version, there is no Pentax version, only Canon and Nikon.
Pixel soldier, Canon version - work perfectly. CR2032 battery in transmitter, AAA batteries in reciever. 4 Group settings. Very secure hotshoe connections, lock and locking pin on the transmitter. Only have Kx on me at the moment so could only test wireless flash down to 1/160th but synching perfectly at 1/160th (Kx jumps from 1/160th to 1/200th and camera will not fire flash at 1/200th, very annoying as I wanted to see how much shutter was caught). The reciever can be used on the camera hotshoe as a wireless remote and the same 2.5mm phono controls the wireless remote and the studio light. Link to this one here
Can be bought in the UK for under £50. Just ordered mine
Anyone want a Canon trigger

change increments from 1/3EV to 1/2EV !!

Can't you just trace the two Hotshoe contacts that fire the flash and check if they are actually contacting the Pentax camera Hotshoe?

Could you wire it to the PC out on the camera?

You could keep them as a shutter realease?

The Pixel soldier's look OK, strange they work and the RF-603 doesn't?
You'll need to buy a box of CR2032's

of course, cheers

Algi, there is no reason why they should not work but I cannot get them to work ! I actually got an email from the seller this morning that confirmed although they sold them as "for Pentax", they will not work with Pentax. Looks like they are reading the other wire before firing, other wire is not making contact on Pentax so no fire. No easy way to fool it though as the "D2" wire on the Canon is producing a five volt sine wave a few microseconds before the flash is activated. It was a punt at £27, will be able to sell them to a Canon owner. They actually are a pretty good wireless remote and not that expensive if only used for this but I really need less things in the kit bag, not more ! The pixel soldiers are looking much better for me and also do the wireless remote bit, the CR2032 and AAA batteries are a pain as that is another two types of batteries to lug around, but other than that they are pretty good.

just dismantled my receiver (NOT Yongnuo), and ONLY 2 wires ! Sync + return !!

The transmitter only has centre contact, so no point in opening it


Bought on eBay 2 yrs ago from Hong Kong, for about £20 and never missed a beat They should work on canikons too


You should be able to remove ALL other wires and use them on anything you fancy !?
.

SHOUL, but it does not work. They are now transcievers and have obviously upped the spec with some embedded code on a ROM to do some extra checks, hence it simply will not fire if the other wire is not connected. That's progress for you !

Got you ! seems the extra pin should be 'Wake up' function !?

In which case it should still work on ANY flash !?? the wake up being a bonus ! No ??

Unless in xmit mode it chats to the camera

Does have wake up function but cannot be that alone as it would still fire when the flash was on. The pixel Soldier is working flawlessly at 1/180th so that does it for me. Might try and swap my business partner his pixel soldier for my YN-603, I feel it is the best solution for the business

Is it the RF-603 C1 version that they sent you?
It should be compatible. Yongnuo say so on their
ebay site?

Algi, it is the C1 version and it does not work. The ebay listing I bought mine on stated for Pentax in the title. The C1, C2 etc is only a different connecting cord, the unit is the same. I have email confirmation from Yongnuo stating they made a mistake, it is not compatible and I can return it for a refund if I want.
Can't now find the linf but on one of the flickr discussion groups they also stated it does not work.
Algi, if you still dont believe me I will do you a good deal and you can try it for yourself

It's probably this one:

RF603s simply don’t work if mounted to other brands. Their “auto switching” function won’t detect the camera so the triggers don’t communicate at all.

link

I'm staying well clear of Yongnuo stuff from now on

At least my £33 experiment (£27 for triggers, £6 for studio cable)has hopefully stopped others from getting them.

I have tried to get a price from a chinese contact for a MOQ order of Pixel Soldiers, I believe MOQ is 48. Will see what the landed price is, if good then I might see if anyone wants to so a group buy ...

This may be of interest?

Looks an interesting project Nice to see that we still have people who can invent stuff in the UK. Looks like a big box though..... I think I'll manage with the 2 RF-602's for now

Maybe his next project could be sorting out the Pentax sync speed.... 1/90th isn't brilliant