Smart Accessory indentification, need help.

[gamerpaddy]

This may be a bit outdated, since "i think" the nex 5r was the last one with it.

On a russian site called impulsite, they did some documentation on the smart accessory port which allows to attach a viewfinder, flash and external microphone.

This lead me to this image:

thanks to "xand" for measuring. it can be found here: http://impulsite.ru/viewtopic.php?p=7740

The port has 2 ID pins, IHS_ID1, IHS_ID2. having resistors from each pin to GND selected the accessory. In this case (my results when testing with 2 potentiometers.

my results:

ID1 --- ID2

22k --- 22k = Flash settings visible, doesnt really have a effect.

47k --- 47k = Viewfinder (Error, cannot connect to it)

56k --- 56k = Viewfinder settings visible, no error. this must be it.

up to 90k-90k = it keeps like the 56k-56k setting.

When using a invalid resistor value on one or both (+-5 or 10k) it shows "This accessory is not compatible with this camera" (translated, english text could be different.

on a MSA-10 flash adaptor, theres a beatiful breakout board wich doesnt have the audio pins routed out. grrr soldering these seems impossible for me. would need to make an own board. nvm, i soldered these huge resistors in there (because i didnt had smaller ones with 22k) and put it in the camera. flash settings seems to be available now.

see

thats the pinout for the MSA-10 which i quickly photoshopped.

Now, i need to know what resistance the "ridiculously overpriced" ECM-SST1 has from ID1 to gnd pin 4, and ID2 to gnd pin4.

i tried to find the right value on my potentiometers test stand "lol" while recording video and hearing when theres no sound anymore. But i could find it.

Now i ask you, if you got the ECM_SST1, can you measure it?

the microphone inputs may be for condenser microphones and need a few components to work with line level (1Vpp) audio signals, but having a external audio input would make me happy. i dont use a flash anyways, atleast not the one i got for my bulky canon eos 500d ( which i also modified to have a external mic input socket)

thanks for reading.



(thats a canon ef 50mm 1.8 ii, since i got canon equipment and didnt want to get new lenses. using the commlite adaptor and manual focussing. flash is a metz 44-af1 for canon e-ttl2. cam is sony nex 5r)

 

[PiotrPL]

hi, thanks for your post. I tested with ID1 22k / ID2 22k and there is no accesory error (it activate flash settings), but when I connect mic to MIC_GD and MIC-L voice from external mic is not recorded.

I tried also this way: http://www.camerahacker.com/Forums/...tandard_stero_input.files.hidden/ais_sony.gif

ID1 0k / ID2 22k, but my NEX said "accessory not supported"

 

[Sympa]

I think there are three ID pins, not two. Would have to check that when I get home.

 

[Leaniel]

Long time ago but now the solution

Id1 450-470 KOhm

Id2 120-150 KOhm

And the mic_l, mic_r and mic_gnd on a audio port like 3,5mm