DIY Cine Film Scanner Makers

DIY Cine Film Scanner Makers

#!/bin/bash

ISO=100 #32 
SHUTTER=25000 #1250  #6140 #6140=120th?
OUTPUTFILENAME=$1
OUTPUTDIR=$PWD #  Or set to your own, I prefer working the current directory 
raspistill -vf -r -bm -fs 1 -ex fixedfps -q 25 -ISO $ISO -ss $SHUTTER -k -awb tungsten -o $OUTPUTDIR/${OUTPUTFILENAME}_%04d.jpg -s -p 0,0,800,600 #-n ex fixedfps # -q 100 -fw -r 

# notes, so... 
# -vf is vertial flip
# -r is raw
# -bm is burst mode (display doesn't update continuously)
# -ex fixedfps is exposure at constant
# -q is jpeg quality
# -ISO self explanatory
# -ss shutter speed
# -k is keyboard trigger (just use space bar instead of using the reed switch
# -awb tungsten - set to your liking
# -o outputs
# -s set to trigger of GPIO
# -p preview window

Reed Trigger Script

#!/usr/bin/env python3
# this must be run with python3 or it will fail, no other pre-requisites as RPi.GPIO is install on a Raspberry Pi by default.
import signal
import sys
import time
import RPi.GPIO as GPIO
import os
import subprocess
from subprocess import check_output
import threading
import datetime

HALLEFFECT_GPIO = 23
BUTTON_GPIO = 16
MOTOR_STATUS = 21
PRESSED = 0
LASTCOUNT = 0
TESTMODE = 0
COUNT = 1

# Setup Code
GPIO.setmode(GPIO.BCM)
#GPIO.setwarnings(True)
GPIO.setup(HALLEFFECT_GPIO, GPIO.IN, pull_up_down=GPIO.PUD_UP)


def get_pid(name):
        return int(check_output(["pidof", "-s", name]))
        
def threadFunc():
    time.sleep(0.2)
    os.kill(raspid, signal.SIGUSR1)

def signal_handler(sig, frame):
    GPIO.cleanup()
    sys.exit(0)

def button_pressed_callback(channel):
    global LASTCOUNT
    global PRESSED
    global TESTMODE
    global COUNT
    thisTime = time.perf_counter() - LASTCOUNT
    print("Button pressed!", COUNT, thisTime)
    GPIO.output(MOTOR_STATUS, 0)
    COUNT += 1
    LASTCOUNT = time.perf_counter()
    if TESTMODE == 1:
        th = threading.Thread(target=threadFunc)
        th.start()
try:    
    if len(sys.argv) == 2:
        raspid=get_pid("raspistill")
        #global TESTMODE
        TESTMODE = 1
        print("proc name = ", raspid)
    else:
        print("Test mode")

   

    if __name__ == '__main__':
        GPIO.setmode(GPIO.BCM)
        GPIO.setup(BUTTON_GPIO, GPIO.IN, pull_up_down=GPIO.PUD_UP)
        GPIO.setup(MOTOR_STATUS, GPIO.OUT)
        GPIO.output(MOTOR_STATUS, 1)
        GPIO.add_event_detect(BUTTON_GPIO, GPIO.FALLING, 
                callback=button_pressed_callback, bouncetime=500)
        GPIO.add_event_detect(HALLEFFECT_GPIO, GPIO.RISING,
                              callback=button_pressed_callback, bouncetime=50)
        signal.signal(signal.SIGINT, signal_handler)
        signal.pause()

except KeyboardInterrupt:
  print ("You exited the program")
#execute code inside this block as the program exits
finally:
  print ("You exited the program")
  GPIO.cleanup()