SteveSnaps
Alas, poor Henry...
One of my newly acquired power converter boards didn't want to work. A closer look revealed the reason - Mr postman has been playing football with my package, and the inductor is rather beaten up.
Close inspection showed another board had similar, but less serious damage, and was still working. This one however is dead.
Oh well, could be worse. Only a 25p component, I'll change it over.
Only tricky bit is it is only 2.5mm wide - see, it is a macro! Best I lay off the caffeine before I do this one!
The board is an AA power board from Jeelabs.
This clever little board mounts a single AA or AAA battery (rechargeable if you like) and converts the 1.2v or 1.5v into 3.3v to power the JeeNode boards I use for my flash triggers (amongst other things). I've got a few code changes to make which will improve the power consumption of my remote flash triggers, but even now, thanks to this board, a single 2400mAh NiMH rechargeable battery can run a remote unit for 20 hours solid. Far longer than both I or my camera battery can last! Plus as this DC power converter board will produce 3.3v from input voltage as low as 0.8v I can even run it on batteries that are "flat" as far as the flashes are concerned.
I guess I should have a look at mounted a solar panel and NiMH charging circuit in the box and then the remotes will recharge just by putting them on the window ledge!
The title? Well inductors are measured in Henry's after an American Scientist Joseph Henry who discovered electromagnetic induction at about the same time as Michael Faraday. Faraday had already given his name to capacitance, so Henry managed to avoid an argument on this unit!
en.wikipedia.org/wiki/Henry_%28unit%29
--- Shot information ---
Shot in manual mode with a 50mm f/1.8D stopped to f/11 mounted on the front of the full set of DIY modified cheap Chinese extension rings.
www.flickr.com/photos/steve_snaps/3834843015
Lighting via SB800 in TTL mode triggered by CLS. Flash is about 5m above the board slightly to the right pointing down at 45 degrees. The SB800 has a built in catch light bounce card, which I deployed, this acts a great reflector on a target this small and throws some light from the left hand side.
Alas, poor Henry...
One of my newly acquired power converter boards didn't want to work. A closer look revealed the reason - Mr postman has been playing football with my package, and the inductor is rather beaten up.
Close inspection showed another board had similar, but less serious damage, and was still working. This one however is dead.
Oh well, could be worse. Only a 25p component, I'll change it over.
Only tricky bit is it is only 2.5mm wide - see, it is a macro! Best I lay off the caffeine before I do this one!
The board is an AA power board from Jeelabs.
This clever little board mounts a single AA or AAA battery (rechargeable if you like) and converts the 1.2v or 1.5v into 3.3v to power the JeeNode boards I use for my flash triggers (amongst other things). I've got a few code changes to make which will improve the power consumption of my remote flash triggers, but even now, thanks to this board, a single 2400mAh NiMH rechargeable battery can run a remote unit for 20 hours solid. Far longer than both I or my camera battery can last! Plus as this DC power converter board will produce 3.3v from input voltage as low as 0.8v I can even run it on batteries that are "flat" as far as the flashes are concerned.
I guess I should have a look at mounted a solar panel and NiMH charging circuit in the box and then the remotes will recharge just by putting them on the window ledge!
The title? Well inductors are measured in Henry's after an American Scientist Joseph Henry who discovered electromagnetic induction at about the same time as Michael Faraday. Faraday had already given his name to capacitance, so Henry managed to avoid an argument on this unit!
en.wikipedia.org/wiki/Henry_%28unit%29
--- Shot information ---
Shot in manual mode with a 50mm f/1.8D stopped to f/11 mounted on the front of the full set of DIY modified cheap Chinese extension rings.
www.flickr.com/photos/steve_snaps/3834843015
Lighting via SB800 in TTL mode triggered by CLS. Flash is about 5m above the board slightly to the right pointing down at 45 degrees. The SB800 has a built in catch light bounce card, which I deployed, this acts a great reflector on a target this small and throws some light from the left hand side.