Cool! Well done
Share away.

Just going off to build my own version
Matt

The Q is loved by all here
The question "Where's the Q?" is very frequently asked... usually one of the boys has it!

It's just sooo cute! LOL!
(Don't have the K01, but currently K5IIs, K10D, *istDs, *istD, and have had everything in between :shock

Everyone mostly uses the 5-15mm standard zoom. I really like the prime... and wouldn't mind the 15-45 to go with it.

As a street shooting camera it's incredibly discrete

Matt

They are not crossed
Tip-to-tip and ring-to-ring.

It may look like it because of the silly circuit symbols I used! (Look for where the 'v' sits on the connector in the diagram)

Have fun
Matt

Either should be fine
It worked for me with 10k... but I think when I build on stripboard I'll use 1k.

If I could've found another BC547 and locate the stripboard I would've built it today. Hopefully this week!
Matt

Yes, it should be ok

You only need one of the circuits for shutter release. If you want focus AND shutter release then you need two sets of this circuit

The BAT85 Schottky diode is required - the iPhone volume is not enough to reliably trigger the transistor. The C1/R1/D1 arrangement offsets the iPhone output enough to trigger the transistor. The capacitor across Q1 is needed to filter the output (because the TriggerTrap output is not on/off, but 20kHz/off )

Hope that helps!
Matt

There's also this one with a case
http://www.ebay.co.uk/itm/New-Flash-External-Compact-Battery-Pack-for-Pentax-AF-...

Matt

Indeed, that's true.
You can tell who holds the certification by looking up the UL number on the genuine Pentax supply.

If it's not held by Pentax (and just a Far East standard-block-plus-Pentax-cable) then that price is waaay over

Personally, I'd pay no more than £50 for a PSU of that nature - if I needed it - and no more than £30 if I felt like giving it a try (which would be a more reasonable price!).

Still thinking of making up my own...

+1

If you only knew the approvals process and costs involved for getting CE, FCC, C-tick, etc, plus safety approvals like UL done....

It's easy for us to minimise the manufacturer's costs when we are so used to buying mass produced items. If Pentax were going to ship half a million PSUs then the price would be very different

Just my two pennies' worth (being involved in manufacturing myself!)

Matt

The K5II/IIs adapter is listed as a K-AC132 (kit), where the PSU is actually part number D-AC120.
Looks like it'll probably suit the other cameras too - 8.3VDC @ 2A

For the K-01 there's a kit that includes this PSU and a fake battery with lead: "Pentax K-AC1202U AC Adapter Kit for K-01 Digital Camera"

You'll probably find that's cheaper than the now apparently out of date K-AC50 !

Matt