Great Guy thanks.
Ok progress update. I now have LANC working. Good in itself as I now can do away with the record servo. However as far as I can see (in this program anyway) there is no Stop function after record, rather just the record function again which ends the recording (in the example code below a grounding of pin 6 triggers record and same again triggers stop). I have been thinking about this and have an idea. Assuming upon activation of the device, if Record state is set to OFF or 0 for taking sake, and upon each activation/instruction of the record function, 1 is added to the variable, it should be safe to assume if the number is odd then the unit is recording and even then stopped? Does this make sense or am I missing something?? Can arduino look at weather a number is odd or even? I am sure there will be some maths magic to look at that problem if not.
The code for the record function has been taken from the internet and is included below. I am now going to have a go at seeing if I can get some revised better code for the PIR function based upon Erdins example below. I like the idea, for a safety buffer almost, off once activated, checking the sensor three times, five seconds or so apart and only once all three are 0 or LOW do I stop recording. The PIR sensor outputs 2.5vs upon being triggered.( Would this be enough for Arduino to see HIGH, I am guessing so as it fires up LED or buzzers no prob) Therefor giving me 15 seconds or so footage once the cause of the trigger is out of shot.
An alternative method could be to record for a preset time upon trigger and then basically reset the timer upon re-trigger of the sensor?
/*
SIMPLE LANC REMOTE
Version 1.0
Sends LANC commands to the LANC port of a video camera.
Tested with a Canon XF300 camcorder
For the interface circuit interface see
Feel free to use this code in any way you want.
2011, Martin Koch
"LANC" is a registered trademark of SONY.
CANON calls their LANC compatible port "REMOTE".
*/
#define cmdPin 7
#define lancPin 11
#define recButton 6
#define zoomOutButton 5
#define zoomInButton 4
#define focusNearButton 3
#define focusFarButton 2
int cmdRepeatCount;
int bitDuration = 104; //Duration of one LANC bit in microseconds.
//LANC commands byte 0 + byte 1
//Tested with Canon XF300
//Start-stop video recording
boolean REC[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,LOW,HIGH,HIGH,LOW,LOW,HIGH,HIGH}; //18 33
//Zoom in from slowest to fastest speed
boolean ZOOM_IN_0[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,LOW,LOW,LOW,LOW}; //28 00
boolean ZOOM_IN_1[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,LOW,LOW,HIGH,LOW}; //28 02
boolean ZOOM_IN_2[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,LOW,HIGH,LOW,LOW}; //28 04
boolean ZOOM_IN_3[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,LOW,HIGH,HIGH,LOW}; //28 06
boolean ZOOM_IN_4[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,HIGH,LOW,LOW,LOW}; //28 08
boolean ZOOM_IN_5[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,HIGH,LOW,HIGH,LOW}; //28 0A
boolean ZOOM_IN_6[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,HIGH,HIGH,LOW,LOW}; //28 0C
boolean ZOOM_IN_7[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,LOW,HIGH,HIGH,HIGH,LOW}; //28 0E
//Zoom out from slowest to fastest speed
boolean ZOOM_OUT_0[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,LOW,LOW,LOW,LOW}; //28 10
boolean ZOOM_OUT_1[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,LOW,LOW,HIGH,LOW}; //28 12
boolean ZOOM_OUT_2[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,LOW,HIGH,LOW,LOW}; //28 14
boolean ZOOM_OUT_3[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,LOW,HIGH,HIGH,LOW}; //28 16
boolean ZOOM_OUT_4[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW}; //28 18
boolean ZOOM_OUT_5[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,HIGH,LOW,HIGH,LOW}; //28 1A
boolean ZOOM_OUT_6[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,HIGH,HIGH,LOW,LOW}; //28 1C
boolean ZOOM_OUT_7[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,LOW,LOW,HIGH,HIGH,HIGH,HIGH,LOW}; //28 1E
//Focus control. Camera must be switched to manual focus
boolean FOCUS_NEAR[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,HIGH,HIGH,HIGH}; //28 47
boolean FOCUS_FAR[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,HIGH,LOW,HIGH}; //28 45
boolean FOCUS_AUTO[] = {LOW,LOW,HIGH,LOW,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,LOW,LOW,LOW,LOW,HIGH}; //28 41
//boolean POWER_OFF[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,HIGH,HIGH,HIGH,HIGH,LOW}; //18 5E
//boolean POWER_ON[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,HIGH,LOW,HIGH,HIGH,HIGH,LOW,LOW}; //18 5C Doesn't work because there's no power supply from the LANC port when the camera is off
//boolean POWER_OFF2[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,LOW,HIGH,LOW,HIGH,LOW,HIGH,LOW}; //18 2A Turns the XF300 off and then on again
//boolean POWER_SAVE[] = {LOW,LOW,LOW,HIGH,HIGH,LOW,LOW,LOW, LOW,HIGH,HIGH,LOW,HIGH,HIGH,LOW,LOW}; //18 6C Didn't work
void setup() {
pinMode(lancPin, INPUT); //listens to the LANC line
pinMode(cmdPin, OUTPUT); //writes to the LANC line
pinMode(recButton, INPUT); //start-stop recording button
digitalWrite(recButton, HIGH); //turn on an internal pull up resistor
pinMode(zoomOutButton, INPUT);
digitalWrite(zoomOutButton, HIGH);
pinMode(zoomInButton, INPUT);
digitalWrite(zoomInButton, HIGH);
pinMode(focusNearButton, INPUT);
digitalWrite(focusNearButton, HIGH);
pinMode(focusFarButton, INPUT);
digitalWrite(focusFarButton, HIGH);
digitalWrite(cmdPin, LOW); //set LANC line to +5V
delay(5000); //Wait for camera to power up completly
bitDuration = bitDuration - 8; //Writing to the digital port takes about 8 microseconds so only 96 microseconds are left for each bit
}
void loop() {
if (!digitalRead(recButton)) {
lancCommand(REC);
}
if (!digitalRead(zoomOutButton)) {
lancCommand(ZOOM_OUT_4);
}
if (!digitalRead(zoomInButton)) {
lancCommand(ZOOM_IN_4);
}
if (!digitalRead(focusNearButton)) {
lancCommand(FOCUS_NEAR);
}
if (!digitalRead(focusFarButton)) {
lancCommand(FOCUS_FAR);
}
}
void lancCommand(boolean lancBit[]) {
cmdRepeatCount = 0;
while (cmdRepeatCount < 5) { //repeat 5 times to make sure the camera accepts the command
while (pulseIn(lancPin, HIGH) < 5000) {
//"pulseIn, HIGH" catches any 0V TO +5V TRANSITION and waits until the LANC line goes back to 0V
//"pulseIn" also returns the pulse duration so we can check if the previous +5V duration was long enough (>5ms) to be the pause before a new 8 byte data packet
//Loop till pulse duration is >5ms
}
//LOW after long pause means the START bit of Byte 0 is here
delayMicroseconds(bitDuration); //wait START bit duration
//Write the 8 bits of byte 0
//Note that the command bits have to be put out in reverse order with the least significant, right-most bit (bit 0) first
for (int i=7; i>-1; i--) {
digitalWrite(cmdPin, lancBit*); //Write bits.*
-
delayMicroseconds(bitDuration);*
-
}*
-
//Byte 0 is written now put LANC line back to +5V*
-
digitalWrite(cmdPin, LOW);*
-
delayMicroseconds(10); //make sure to be in the stop bit before byte 1*
-
while (digitalRead(lancPin)) {*
-
//Loop as long as the LANC line is +5V during the stop bit*
-
}*
-
//0V after the previous stop bit means the START bit of Byte 1 is here*
-
delayMicroseconds(bitDuration); //wait START bit duration*
-
//Write the 8 bits of Byte 1*
-
//Note that the command bits have to be put out in reverse order with the least significant, right-most bit (bit 0) first*
-
for (int i=15; i>7; i--) {*
_ digitalWrite(cmdPin,lancBit*); //Write bits*_
* delayMicroseconds(bitDuration);*
* }*
* //Byte 1 is written now put LANC line back to +5V*
* digitalWrite(cmdPin, LOW);*
* cmdRepeatCount++; //increase repeat count by 1*
_ /Control bytes 0 and 1 are written, now don’t care what happens in Bytes 2 to 7_
_ and just wait for the next start bit after a long pause to send the first two command bytes again./_
. To give some background to the assembly.