Pentax IR Remote

I want to make an infrared remote for the new pentax cameras for doing timelapses, as any timelapse shooter it involves triggering a IR sequence every X amount of time. The interval part is pretty straightforward, I want a little help regarding the IR sequence.

Here is the required pulse train:

http://img811.imageshack.us/img811/6...axprotocol.jpg

What would be the best way to send this thru a pic 12F683 pin? First I tought about using PWM or HPWM but these are limited to 32Khz

Thanks in advance!

Pablo

This is what I got so far, I need to test it tomorrow with a camera, in simulation it looks OK, but I'm open to suggestions for improvement.

I need to code the operator input side of the program where the user selects with a pot the interval, now it just triggers once a second

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Copyleft (c) 2011 * '* : No Rights Reserved on derived work * '* Date : 04-Jan-11 * '* Version : 1.0 * '* Notes : * '**************************************************************** @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; Define port pin to use for IR out @ device pic12f683,INTRC_OSC_NOCLKOUT , wdt_on, mclr_off, protect_off DEFINE OSC 4 GPIO.2 = 1 ' IR LED off -----|<|----/\/\/\----+5 TRISIO.2 = 0 ' Output for IR signal CMCON0 = 7 ' Comparators disabled ANSEL = 0 ' A/D disabled ' IR carrier generator routines. Freq.inc. Cycles VAR BYTE ' Number of carrier cycles PAUSE 100 GOTO OverFreq ' jump over pulse routines ' Generate "Cycles" number of ~38.4kHz pulses ASM _Pulse38 bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM OverFreq: Main: sleep 1 'sleep one second gosub trigger 'send trigger pulse GOTO Main Trigger: 'generate pentax trigger pulse Cycles = 255 CALL Pulse38 Cycles = 244 CALL Pulse38 pauseus 3000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 5000 'end of stream return END

Or You can try something like this :

Code:

@ device pic12F683, XT_OSC, wdt_off, pwrt_on, mclr_off, protect_off, bod_off DEFINE OSC 4 INCLUDE "MODEDEFS.BAS" GPIO = %00111011 TRISIO = %00111011 ' ATTENTION !!! CCP1CON = %00001100 ' Mode select = PWM T2CON = %00000100 ' Timer2 ON + 1:1 prescale PR2 = %00011001 ' Set PWM frequency to 39kHz ANSEL = %00000000 CMCON0 = %00000111 but1 var GPIO.0 ; gpio.2 is CCPR1L CCPR1L = 0 i var byte '========================================= main: pause 100 if but1=1 then do_command do_command: CCPR1L=8 pauseus 1300 CCPR1L=0 pauseus 300 for i=1 to 7 CCPR1L=8 pauseus 100 CCPR1L=0 pauseus 100 next i PAUSE 500 Goto Main

The code I posted had the duty cycle inverted, just modified the assembly routine (swapped BSF & BCF) and it works, just tested it with my pentax Kx. Im happy :)

fratello: tested your code but it does not work, then I simulated it and the pulsetrain was very noisy maybe thats the cause.

Here is the modified code:

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Copyleft (c) 2011 * '* : No Rights Reserved on derived work * '* Date : 04-Jan-11 * '* Version : 1.0 * '* Notes : pablou at gmail dot com * '**************************************************************** @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; Define port pin to use for IR out @ device pic12f683,INTRC_OSC_NOCLKOUT , wdt_on, mclr_off, protect_off DEFINE OSC 4 GPIO.2 = 1 ' IR LED off -----|<|----/\/\/\----+5 TRISIO.2 = 0 ' Output for IR signal CMCON0 = 7 ' Comparators disabled ANSEL = 0 ' A/D disabled ' IR carrier generator routines. Freq.inc. Cycles VAR BYTE ' Number of carrier cycles PAUSE 100 GOTO OverFreq ' jump over pulse routines ' Generate "Cycles" number of ~38.4kHz pulses ASM _Pulse38 bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM OverFreq: Main: sleep 1 'sleep one second gosub trigger 'send trigger pulse GOTO Main Trigger: 'generate pentax trigger pulse Cycles = 255 CALL Pulse38 Cycles = 244 CALL Pulse38 pauseus 3000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 1000 cycles = 37 CALL Pulse38 pauseus 5000 'end of stream return END

Actually - it should work either way, but your last version will be leaving the IR LED ON if the cathode is connected to GPIO.2.

Quote:

Originally Posted by Bruce

Actually - it should work either way, but your last version will be leaving the IR LED ON if the cathode is connected to GPIO.2.

You are right, I left it again the way you coded it and it works the same :)

Thanks for the example BTW, without it I would be lost.
I finished the full timelapse+remote code but Im keeping it to myself at this moment, the code I posted and a little thinking will serve as the foundation to do any remote trigger operation with Pentax cameras.

Happy 2011 :)

Glad I could help, but I would like to see you share what you have. Unless, of course, it's something you plan to sell as a product.

What goes around - comes around, and the folks you help along your way never seem to forget you..;)

Bruce, you are right again.

After thinking about... lets say 2 minutes :) here is the code, I hope you and everyone else help me to make it better, there are a couple of things that can be improved for sure.

Good thing about it is that you change the pulse train and bingo timelapse remote for another brand, or even better, add a dipswitch and make the remote multibrand.

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Copyleft (c) 2011 * '* : No Rights Reserved on derived work * '* Date : 05-ENE-11 * '* Version : 1.02 * '* Notes : pablou at gmail dot com * '**************************************************************** @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; Define port pin to use for IR out @ device pic12f683,INTRC_OSC_NOCLKOUT , wdt_on, mclr_off, protect_on DEFINE OSC 4 GPIO = 0 TRISIO.2 = 0 ' LED IR TRISIO.1 = 0 ' LED testigo TRISIO.5 = 1 ' Input para interruptor normal abierto (con pulldown) CMCON0 = 7 ' Comparadores deshabilitados ANSEL = 0 ' A/D deshabilitado GIE VAR INTCON.7 ' Global interrupt enable 1=ON, 0=OFF GPIE VAR INTCON.3 ' Port change interrupt enable 1=ON, 0=OFF GPIF VAR INTCON.0 ' Port Change Interrupt Flag bit Cycles VAR BYTE ' Number of carrier cycles ContaSec var word ' Contador de segundos TLFlag var byte ' Se programo el contador? IRLED var GPIO.2 ' alias LED IR LED var GPIO.1 ' alias LED testigo BOTON var GPIO.5 GIE = 0 ' Disable global ints GPIE = 1 ' Enable port change int IOC.5 = 0 ' Int-on-change for GPIO.5 disbled PAUSE 100 ' Pausita pa estabilizar todo al arranque GOTO OverFreq ' jump over pulse routines ' Generate "Cycles" number of ~38.4kHz pulses Bruce at www.rentron.com ASM _Pulse38 bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM OverFreq: contasec=0 tlflag=0 'Si el micro arranca con el boton apretado contar segundos while boton=1 contasec = contasec + 1 high led pause 50 low led pause 950 tlflag=1 wend contasec = contasec - 1 ' descontar un segundo, algun dia mejorare la rutina 'Loop del TimeLapse if tlflag = 1 then while boton = 0 sleep contasec ' dormir por el tiempo programado gosub trigger ' disparar high led ' prende LED testigo pause 50 ' sisi agrega 50ms, no me calienta en lo mas minimo :) low led ' apaga LED testigo wend ' Se acabo el timelapse porque se apreto el boton for contasec = 1 to 15 ' avisarle al usuario parpadeando el LED testigo high led pause 100 low led pause 100 next endif IOC.5 = 1 ' Int-on-change for GPIO.5 enabled GPIO = 0 Main: ' Loop principal @sleep ' Dormir while boton=0 ' Mientras no se aprete el boton no dejar pasar wend GPIF = 0 ' Clear port change interrupt flag gosub trigger ' Disparar high led ' prende LED testigo pause 50 low led ' apaga LED testigo GOTO Main Trigger: ' Generar el pulso de disparo PENTAX Cycles = 255 CALL Pulse38 Cycles = 239 CALL Pulse38 pauseus 3000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 5000 ' Fin del tren de pulsos PENTAX return END ' Fin

Sorry for spanish comments, google translate is your friend :)

http://img337.imageshack.us/img337/8...ntaxremote.png

Pablo

Nikon Protocol: http://www.sbprojects.com/projects/nikon/index.htm

Canon: http://www.doc-diy.net/photo/rc-1_hacked/

add resistors for LED, not included in schematic (and neither in my protoboard :) ) and a transistor for more IR range, measured 387 microampere in the main loop while in sleep and 8mA while triggering, can it be made to consume even less in case the switch is left on?

Current version instructions:

to enable timelapse function press pushbutton while powering ON the remote, the red led will flash each second passed, once you release the pushbutton this will be the interval time.

to exit the timelapse mode, just press the pushbutton longer than the intervall, once out of the mode the red led will flash briefly.

After exiting timelapse mode, if you press the pushbutton momentarily it will trigger once, if you keep it pressed it will trigger continuously.

if you start the remote without the pushbutton pressed it will work like previous paragraph.

While I was driving home I had an idea, why not add 2 more pushbuttons to easily have longer periods, one can be x10 seconds and the other minutes. And then, when outside the timelapse function these buttons can be programmed to trigger a certain amount of photos in a row, say for example 3 photos and 6 photos or any combination that can be programmed.

Nifty project. Could even use a serial LCD and have a boat-load of options with a menu.

Hi,

Speaking of intervalometers, did you see the one at http://www.doc-diy.net/photo/hdr-jack/#thecircuit ?

It uses an atmel and is meant for a Canon, but the design is ingenious.

Or this: http://cms.diodenring.de/en/electron...tervalltimerv2 ; based on 10F222, works with Canon, Nikon & the newer Pentaxs.

Planning to build one for my Canon 500D...

Regards,

Anand

Quote:

Originally Posted by ardhuru

Hi,

Speaking of intervalometers, did you see the one at http://www.doc-diy.net/photo/hdr-jack/#thecircuit ?

It uses an atmel and is meant for a Canon, but the design is ingenious.

Or this: http://cms.diodenring.de/en/electron...tervalltimerv2 ; based on 10F222, works with Canon, Nikon & the newer Pentaxs.

Planning to build one for my Canon 500D...

Regards,

Anand

I started with a Canon A570is and CHDK but wanted to use the DSLR for its many advantages, built the diodenring timelapse but my brand new pentax K-x does not have the 2.5mm jack as my previous pentax K-100, stupid me I realized this AFTER building it :) so the only choice left was to build it using the IR sensor. Crossed many mails with Achim (from diodenring) he is a helpfull guy.

Regarding the HDR-jack I think this can also be implemented via IR, but not looked into it yet.

Regarding the program in this thread, I know the timing loop at the begining can be improved using a better way to count time. I could use some help there :)

Pablo

Quote:

Originally Posted by peu

Regarding the program in this thread, I know the timing loop at the begining can be improved using a better way to count time. I could use some help there :)

Darrel has some great interrupt include files. It makes it pretty easy to do some great things with interrupts, and they can be very efficient as well. Here is a link to a timer example of his. http://darreltaylor.com/DT_INTS-14/elapsed.html

interesting, never looked deeply into them, now that I did I have some warnings at compile time, maybe you can help me

PIC12F683
pbp 2.60b
latest mapsm from MPLAB IDE v8.63
Downloaded ReEnterPBP.bas and DT_INTS-14.bas from Darrel Site and placed at pbpw folder
And Im trying the example you linked (http://darreltaylor.com/DT_INTS-14/elapsed.html)
this example requires Elapsed_INT.bas which I found in this thread: http://www.picbasic.co.uk/forum/show...7473#post17473 also placed it at pbpw folder. Is this the current version?

when I compile the example (using MPASM from microcodestudio) I get these errors:

Warning[219] C:\progra~1\picbas~1\pbppic14.lib 2934 : Invalid RAM location specified.
Warning[219] C:\progra~1\picbas~1\pbppic14.lib 2939 : Invalid RAM location specified.
Warning[219] C:\progra~1\picbas~1\pbppic14.lib 3059 : Invalid RAM location specified.
Warning[219] C:\progra~1\picbas~1\pbppic14.lib 3075 : Invalid RAM location specified.

What Im doing wrong?

the problem was the LCDOUT, doh! :) back to learning this interesting interrupt stuff

Added the timer as suggested and it works! BUT, now I lost two things and I don't know why:

1) the led thats supposed to flash once a second inside the time counting loop only flashes once.

2) When outside the timelapse function in the previous version if I left the button pressed the camera shooted continuously, now it shots one time per press

As a BONUS I translated all the comments to English :)

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Copyleft (c) 2011 * '* : No Rights Reserved on derived work * '* Date : 05-ENE-11 * '* Version : 1.01 * '* Notes : pablou at gmail dot com * '**************************************************************** @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; Define port pin to use for IR out ' 12F683.INC at picbasic folder has this defined already for MPASM use ' __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_OFF & _CP_ON '@ device pic12f683,INTRC_OSC_NOCLKOUT , wdt_on, mclr_off, protect_on INCLUDE "DT_INTS-14.bas" INCLUDE "ReEnterPBP.bas" INCLUDE "Elapsed_INT.bas" ; Elapsed Timer Routines by Darrel Taylor DEFINE OSC 4 GPIO = 0 TRISIO.2 = 0 ' LED IR TRISIO.1 = 0 ' Red LED TRISIO.5 = 1 ' Normal open pushbutton (w/ pulldown) CMCON0 = 7 ' Comparators disabled ANSEL = 0 ' A/D disabled ' GIE VAR INTCON.7 ' Global interrupt enable 1=ON, 0=OFF GPIE VAR INTCON.3 ' Port change interrupt enable 1=ON, 0=OFF GPIF VAR INTCON.0 ' Port Change Interrupt Flag bit Cycles VAR BYTE ' Number of carrier cycles ContaSec var word ' Seconds Counter TLFlag var byte ' Timelapse counter programmed? IRLED var GPIO.2 ' alias LED IR LED var GPIO.1 ' alias red LED BOTON var GPIO.5 ' pushbutton GIE = 0 ' Disable global ints GPIE = 1 ' Enable port change int IOC.5 = 0 ' Int-on-change for GPIO.5 disbled PAUSE 100 ' little pause to settle the processor after cold start GOTO OverASM ' jump over ASM routines ' Generate "Cycles" number of ~38.4kHz pulses Bruce at www.rentron.com ASM _Pulse38 bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM ASM INT_LIST macro ; IntSource, Label, Type, ResetFlag? INT_Handler TMR1_INT, _ClockCount, PBP, yes endm INT_CREATE ; Creates the interrupt processor INT_ENABLE TMR1_INT ; Enable Timer 1 Interrupts ENDASM OverASM: ' END of ASM routines contasec=0 tlflag=0 ' New timer GOSUB ResetTime ' Reset Time to 0d-00:00:00.00 GOSUB StartTimer ' Start the Elapsed Timer while boton = 1 ' Loops while the button is pressed if SecondsChanged = 1 then 'if the seconds changed flash the red led high led pause 50 low led SecondsChanged = 0 ' set flag back to 0 endif tlflag=1 ' This flags lets me know if the timer was used wend contasec = Seconds + (Minutes * 60) ' Total time elapsed gosub StopTimer 'Loop del TimeLapse if tlflag = 1 then ' if the timer was used continue while boton = 0 sleep contasec ' sleep programmed time gosub trigger ' trigger high led ' red LED on pause 50 ' little pause low led ' red LED off wend ' Timelapse ended because the button was pushed for contasec = 1 to 15 ' flash red LED to let the user know high led pause 100 low led pause 100 next endif IOC.5 = 1 ' Int-on-change for GPIO.5 enabled GPIO = 0 Main: ' main Loop ASM sleep ; Sleep endasm while boton=0 ' wait for button push wend GPIF = 0 ' Clear port change interrupt flag gosub trigger ' trigger high led ' red LED on pause 50 low led ' red LED off pause 200 ' debounce GOTO Main Trigger: ' PENTAX pulse train Cycles = 255 CALL Pulse38 Cycles = 239 CALL Pulse38 pauseus 3000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 5000 ' end PENTAX pulse train return END ' Fin :)

While debugging the firmware I took so many pictures that I decided to make a timelapse out of them :)

Enjoy in 1080p

http://www.youtube.com/watch?v=PtOaztPppgc

Solved the trigger by holding button, ingenuity works :)
I still can't figure out why the led does not blink while counting time at the first while wend

And I noticed the ASM SLEEP does not work, consumption is the same (0.4mA) regardless I use it or comment it out. I replaced @ sleep with ASM SLEEP ENDASM to compile with MPASM do I need to add something else?

changed code:

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Copyleft (c) 2011 * '* : No Rights Reserved on derived work * '* Date : 05-ENE-11 * '* Version : 1.10 * '* Notes : pablou at gmail dot com * '**************************************************************** @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; Define port pin to use for IR out ' 12F683.INC at picbasic folder has this defined already for MPASM use ' __config _INTRC_OSC_NOCLKOUT & _WDT_ON & _MCLRE_OFF & _CP_ON '@ device pic12f683,INTRC_OSC_NOCLKOUT , wdt_on, mclr_off, protect_on INCLUDE "DT_INTS-14.bas" INCLUDE "ReEnterPBP.bas" INCLUDE "Elapsed_INT.bas" ; Elapsed Timer Routines by Darrel Taylor DEFINE OSC 4 GPIO = 0 TRISIO.2 = 0 ' LED IR TRISIO.1 = 0 ' Red LED TRISIO.5 = 1 ' Normal open pushbutton (w/ pulldown) CMCON0 = 7 ' Comparators disabled ANSEL = 0 ' A/D disabled ' GIE VAR INTCON.7 ' Global interrupt enable 1=ON, 0=OFF GPIE VAR INTCON.3 ' Port change interrupt enable 1=ON, 0=OFF GPIF VAR INTCON.0 ' Port Change Interrupt Flag bit Cycles VAR BYTE ' Number of carrier cycles ContaSec var word ' Seconds Counter TLFlag var byte ' Timelapse counter programmed? IRLED var GPIO.2 ' alias LED IR LED var GPIO.1 ' alias red LED BOTON var GPIO.5 ' pushbutton GIE = 0 ' Disable global ints GPIE = 1 ' Enable port change int IOC.5 = 0 ' Int-on-change for GPIO.5 disbled PAUSE 100 ' little pause to settle the processor after cold start GOTO OverASM ' jump over ASM routines ' Generate "Cycles" number of ~38.4kHz pulses Bruce at www.rentron.com ASM _Pulse38 bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM ASM INT_LIST macro ; IntSource, Label, Type, ResetFlag? INT_Handler TMR1_INT, _ClockCount, PBP, yes endm INT_CREATE ; Creates the interrupt processor INT_ENABLE TMR1_INT ; Enable Timer 1 Interrupts ENDASM OverASM: ' END of ASM routines contasec=0 tlflag=0 ' New timer GOSUB ResetTime ' Reset Time to 0d-00:00:00.00 GOSUB StartTimer ' Start the Elapsed Timer while boton = 1 ' Loops while the button is pressed if SecondsChanged = 1 then 'if the seconds changed flash the red led high led pause 50 'should blink once a second but it doesn't low led SecondsChanged = 0 ' set flag back to 0 endif tlflag=1 ' This flags lets me know if the timer was used wend contasec = Seconds + (Minutes * 60) ' Total time elapsed gosub StopTimer 'Loop del TimeLapse if tlflag = 1 then ' if the timer was used continue while boton = 0 sleep contasec ' sleep programmed time gosub trigger ' trigger high led ' red LED on pause 50 ' little pause low led ' red LED off wend ' Timelapse ended because the button was pushed for contasec = 1 to 15 ' flash red LED to let the user know high led pause 100 low led pause 100 next endif IOC.5 = 1 ' Int-on-change for GPIO.5 enabled GPIO = 0 Main: ' main Loop ASM SLEEP ; Sleep endasm while boton=0 ' wait for button push wend GPIF = 0 ' Clear port change interrupt flag while boton=1 ' shoot while pressed gosub trigger ' trigger high led ' blink red LED pause 50 low led wend GOTO Main Trigger: ' PENTAX pulse train Cycles = 255 CALL Pulse38 Cycles = 239 CALL Pulse38 pauseus 3000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 5000 ' end PENTAX pulse train return END ' Fin :)

1 Attachment(s)

Here is version 2 of the PENTAX / NIKON IR remote, yes, I added Nikon support, needs to be tested with a Nikon camera as I don't have one.

Removed Darrel's Instant Interrupt elapsed timer because I was unable to make it work, also polished the code a little. As previous versions there is room for improvements, I hope someone else is interested in making it even better.

The device while sleeping uses only one microampere, so its suitable to be used with a button 3v 2032 battery.

You can add a second pushbutton but normally closed for power supply to briefly reset the remote to use it for timelapses again.[edit] or enable MCLR and use a normal pushbutton conecting pin 4 to GND and a 10k pull up resistor to VDD.

Attached is the HEX file for 12F683

http://img210.imageshack.us/img210/6144/remotei.jpg

Code:

'**************************************************************** '* Name : pentax.BAS * '* Author : PEU based on examples from www.rentron.com * '* Notice : Pablo E. Untroib (c) 2011 * '* : No Rights Reserved on derived work * '* : Free for personal use '* Date : 11-ENE-11 * '* Version : 2.10 * '* Notes : pablou at gmail dot com * '* : Consumption while sleeping is 1 microamper * '**************************************************************** @ DEVICE PIC12F683,INTRC_OSC_NOCLKOUT,WDT_ON,MCLR_OFF,BOD_OFF,PWRT_OFF @ #define IRTX GPIO ; Define port to use for IR out @ #define PIN 2 ; IR LED output GND---/\/\/\---|<|--GPIO.2 define OSC 4 ' Defines oscilator frequency 'DEFINE DEBUG_REG GPIO ' used at debug time 'DEFINE DEBUG_BIT 4 'DEFINE DEBUG_BAUD 2400 GIE VAR INTCON.7 ' Global interrupt enable 1=ON, 0=OFF GPIE VAR INTCON.3 ' Port change interrupt enable 1=ON, 0=OFF GPIF VAR INTCON.0 ' Port Change Interrupt Flag bit LED VAR GPIO.1 ' LED output GND---/\/\/\---|<|--GPIO.1 Cycles VAR BYTE ' Number of carrier cycles ContaSec var word ' Seconds Counter ContaMili var byte ' Miliseconds Counter TLFlag var byte ' Timelapse counter programmed? BOTON var GPIO.5 ' Key input (10K pull-UP w/switch to ground) CMCON0 = 7 ' All digital GPIO = 0 ' Clear port on boot TRISIO = %00100000 ' GPIO.5 input, rest outputs GIE = 0 ' Disable global ints GOTO OverASM ' jump over ASM routines ' Generate "Cycles" number of ~38.4kHz pulses Bruce at www.rentron.com ASM _Pulse38 bcf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS goto $+1 ; + 2uS = 11uS goto $+1 ; + 2uS = 13uS bsf IRTX,PIN ; 1uS, LED=on goto $+1 ; + 2uS = 3uS goto $+1 ; + 2uS = 5uS goto $+1 ; + 2uS = 7uS goto $+1 ; + 2uS = 9uS nop ; + 1uS = 10uS decfsz _Cycles,f ; + 1uS = 11S goto _Pulse38 ; + 2uS = 13uS return ; Return to caller ENDASM OverASM: ' END of ASM routines contasec = 0 ContaMili = 0 tlflag = 0 while boton = 0 ' Loops while the button is pressed contamili = contamili + 1 pause 100 if contamili = 8 then ' I count 0 to 8 so I can flash the LED 100ms contamili = 0 contasec=contasec + 1 high led pause 100 low led endif tlflag=1 ' This flags lets me know if the timer was used wend ' this is needed because the SLEEP takes about 2.3 seconds to react ' see SLEEP description in PBP manual if contasec > 2 then contasec = contasec - 2 endif pause 1000 ' debounce pushbutton 'Loop del TimeLapse if tlflag = 1 then ' if the timer was used continue while boton = 1 sleep contasec ' sleep programmed time gosub trigger ' trigger high led ' red LED on pause 50 ' little pause low led ' red LED off wend WDTCON = 0 ' Disable WDT when not needed for power savings ' Timelapse ended because the button was pushed for contasec = 1 to 5 high led ' flash red LED to let the user know timelapse ended pause 100 low led pause 100 next endif GPIE = 1 ' Enable port change int IOC.5 = 1 ' Int-on-change for GPIO.5 enabled ' Main loop works as a normal remote, ' one push triggers, hold pushbutton triggers continuously Main: @ SLEEP ' SLEEP until Key is pressed WHILE Boton = 0 ' Wait for Key release gosub trigger high led pause 200 WEND low led GPIF = 0 ' Clear port change interrupt flag GOTO Main Trigger: ' PENTAX pulse train begins Cycles = 255 CALL Pulse38 Cycles = 239 CALL Pulse38 pauseus 3000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 1000 cycles = 38 CALL Pulse38 pauseus 2000 ' end PENTAX pulse train with 2ms pause Cycles = 76 ' NIKON pulse train begins CALL Pulse38 pauseus 28000 cycles = 15 CALL Pulse38 pauseus 1580 cycles = 15 CALL Pulse38 pauseus 3580 cycles = 15 CALL Pulse38 pauseus 63200 Cycles = 76 CALL Pulse38 pauseus 28000 cycles = 15 CALL Pulse38 pauseus 1580 cycles = 15 CALL Pulse38 pauseus 3580 cycles = 15 CALL Pulse38 pauseus 2000 ' end NIKON pulse train with 2ms pause return END

Instructions:

to enable timelapse function press pushbutton while powering ON the remote, the red led will flash each second passed, once you release the pushbutton this will be the interval time.

to exit the timelapse mode, just press the pushbutton longer than the intervall, once out of the mode the red led will flash briefly.

After exiting timelapse mode, if you press the pushbutton momentarily it will trigger once, if you keep it pressed it will trigger continuously.

if you start the remote without the pushbutton pressed it will work like previous paragraph.

Routing and Drilling the PCBs

http://www.youtube.com/watch?v=9oDjPjiNE9Q

Nice!!!! :D

Double clock and use HPWM

I did a similar camera control several years back. I used HPWM which will go to 38+KHz if you define the oscillator as one value then load a crystal of twice that value.

For example
DEFINE OSC 10 but in practice load a 20 MHz crystal.
HPWM 1, 127, 19400

That shags all your other timings so it can get tricky with other delays and serial in/out but it works for me.

HTH
BrianT