Recent content by Fretsaw

Seems that a number of photos taken of Boris and colleagues in no10 "partying" without permission, led eventually to his downfall. Wonder if he would have any redress if such photos were deemed to be illegally taken or illegally published. One wonders. Many years ago in a camera club during...

For completeness to close off the flash voltage query later found out from Nikon support that my D 7500 will take up to 250v with a rider that is with compatible Nikon flash units. I later found reference to this in an on line manual that has more info than the printed manual which is...

Thank you, Simon, the versa trigger looks like what I want ready-made and affordable.

Thanks for replies some good prompts there. Have heard of Arduino but that is it. Is it a long learning curve? Was actively doing circuits prototyping on breadboards in the 70's but apart from making the voltage regulator about 20 years ago not done anything since on that sort of scale so have...

Anyone got any info on a motion sensor to trigger a flash. A bespoke unit or a circuit diagram to construct one. I think it would be possible to construct a fairly simple circuit. Found this for Canon. https://www.eos-magazine-shop.com/micnova-lightning-motion-sound-sensor-c2x14646613. I don't...

Thanks for the replies. I measured the trigger voltage at the socket of the flash head, and it is 25V. At end of the lead was no volts fiddled around with the contacts and got voltage so was bad contact between the "spade" 2 prong ends going into the flash head. As all the leads were failing...

Have made good progress with this. I used 8 cells 1.2v Nimh with a voltage reduction board I had made up years ago and delivered 9.1 V. The battery pack I made up was delivering 11.5V to my circuit when checked voltage all the 1.2 v C cells were around 1.45V not measured them before thought...

Don't think AA will be powerful enough ones I have got are only 900 mAh. Don't believe they can be made to the power I need. But the comment Phil made has reminded me that I have 4 1.2 v 4Ah "c" which go in a laser level I have, and I also have 4 spares of dubious age/capacity. I'll see what i...

Thank again great info. The link from Steven states trigger vols is 22V. If needed can use a slave trigger that will operate the F900 off the built-in camera flash or an accessory in the hot shoe that does the same thing. That link also has a diy battery pack of 7 1.2v NImh stuffed into the...

Thanks for your replies much appreciated. I am very much in the have ago to repair sort of chap saved me a lot in the past and learnt a lot on electrics and electronics making darkroom equipment like timers' temp controllers and even a processor when such things were very expensive that was over...

Returning to photography after 2 decades of being really busy. Resurrecting a Braun F90O which I bought some 40 years ago new which needs some TLC. Needs a replacement battery and ideally if I can lay hands on one a service/repair manual. Last time it was used it did work but the batteries being...