JJCam.lua - Enhancements for non-ttl hot shoe flash operation. - Completed and Working Scripts

jairbj

5

JJCam.lua - Enhancements for non-ttl hot shoe flash operation.

« on: 16 / July / 2015, 19:13:08 »

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Hi friends, this is my first CHDK script.

Recently I bought a Yongnuo YN560-IV (that is non ttl) for my canon SX50 and for my surprise it didn't work.
After a lot of research and a lot o tries I discovered that this flash work in any mode if you change from "continous" to "single" shot mode.

So the first bad thing is it, you need to release and press again the shutter button to take continuous photos.

Based on this I made this script that enable you to take "continuous shot" photos in camera "single shot" mode and of course triggering the non ttl hot shoe flash.

I tried in any mode (except AUTO) and the script worked in all of them.

Operation:
MENU: Exit Script
HALF PRESS: Half Press
FULL PRESS: Full Press (if you hold full press it takes continuous shot)
ZOOM KEYS: Zoom Keys working

Download the script HERE

History:
v0.1 - Initial release - Make continuous shot and zoom keys working.

« Last Edit: 16 / July / 2015, 19:48:17 by jairbj »

Logged

waterwingz

12140

Re: JJCam.lua - Enhancements for non-ttl hot shoe flash operation.

« Reply #1 on: 16 / July / 2015, 19:23:59 »

Quote from: jairbj on 16 / July / 2015, 19:13:08

Download the script HERE

Nice job for a first script ! But the download link is broken.

Try this : Download the script HERE

Also, the script header is a bit strange :

Code: [Select]

--[[
*******************************************
     CHDK Plus v2.8
     Licence: GPL
    (c) waterwingz,msl,wayback/peabody 2014
    artistic direction provide by fabri22 
*******************************************
@title JJCam v0.1
@chdk_version 1.3

--]]
set_exit_key("no_key")


function restore()
    set_aflock(0)
	set_aelock(0)
end

function check_zoom_keys()
    if is_key("zoom_in")  then 		
		while(is_pressed("zoom_in")) do 
			press("zoom_in") 						
			sleep(10) 
		end 		
		release("zoom_in")
    elseif is_key("zoom_out") then 
		press("zoom_out") 
		while(is_pressed("zoom_out")) do 
			sleep(10) 
		end 
		release("zoom_out")            
    end
end

function half_press()
	-- read the meter	
	press("shoot_half") 
	
	-- wait camera ready
	repeat
		sleep(50)
	until get_shooting() == true
	--lock af and ae
	set_aflock(1)
		
	-- wait full press or release half_press
	repeat	
		wait_click(100)
		-- full press
		if is_key("shoot_full") then 
			full_press()
		end
	until (not(is_pressed("shoot_half")))			
	set_aflock(0)	
	release("shoot_half")
end

function full_press()
	-- repeat until release full press
	repeat
		ecnt=get_exp_count()
		press("shoot_full_only")
		-- wait camera is available for another shot
		repeat
			sleep(20)
		until(get_exp_count()~=ecnt)
		release("shoot_full_only")
		wait_click(100)
	until (not(is_pressed("shoot_full")))							
end

print("JJCam Loaded!")
repeat
	wait_click(200)
	
	if (is_key("shoot_full") or is_key("shoot_half")) then 
		half_press()
	else
		check_zoom_keys()
	end
until ( is_key("menu") )
restore()
print("JJCam Halted.")
-- eof --