Arduino Mini LANC Controller (Power problem)

Forum 2005-2010 (read only) Hardware Interfacing
1

hi.

I'm working on a LANC controller for my camera. I've been playing around on this code
http://findlayproductions.ca/gooseblog/?p=5
from Goose's Tech (via Brady Marks
http://blog.furiousgreencloud.com/2008/08/arduino-speaks-to-lanc-devices-camera.html).:wink:

Good: the code works. I've implemented a REC/STOP button(the true need, beside the tele/wide function), and some others functions.
I'll upload everything on the wiki after is working better (some few weeks).

My only problem is the power supply: In the code provided from Goose the Vin actually send the data to the camera.
Since I'm working on the (very fragile) Mini I'm asking myself:
What is it going to happen if I connect both the wire going to the camera and the power supply from the 9V battery to the same pin?

here's where it's explained in the code:

* LANC 2.5mm plug sleeve to Arduino Ground
* LANC 2.5mm plug ring to Arduino Vin (input to regulator, NOT 5V)
* LANC 2.5mm plug tip to Arduino Digital Pin 2

any ideas?
Cheers
Davide

2

really?
I'm just afraid to burn the board... :-[ :-[ :-[ :-[

3

If someone else is having the upwritten doubt:
go ahead, it's going to work.
Vin behaves in both ways.
Everything just works.

Back on LANC mapping.

4

Did you ever get any further on this?

I'm keen to see if I can use arduino as a personalized LANC remote for my Canon -- have some buttons that perform macros of actions on demand, for example.

Do you read from the ceamera too, or just send?

thanks

5

It is possible to read from the camera.
the camera should give you back a huge number which shoud be divided anc becoming timecode & date.

in the lanc documentation it says lanc is a bidirectional protoco...

anyway I'm currently using (and testing, then I'll may post everything) an arduino lanc controller.
Still has some problems
(I have a canon xh ai. It doesn't work on old xm2)
which is your camera?

p.s. at th end I connected the 9 V and everything worked. still doubtful

6

Thanks!

I have the new Canon HF S11 & await the LANC interface module.

I have a hunch that I can use LANC to quickly get at just about all the functions in the camera, if I automate the menu navigation. I've also got a hunch that Canon uses the LANC/Minishoe interface to query the state of the camera during QA testing. So a "smart" LANC could potentially be useful for more than just zooming and the occasional intervalometer task! We'll see....

7

definetly.

I think there is a compatibility issue.
I'm just waiting to check in other new ways the real behaviour of the lanc (maybe through oscilloscope)

i.e. I think the cameras "offers" a 5V to the lanc.
sometimes the lanc works with no batteries.
just sometimes