rxseger

#!/usr/bin/python

# open/close CD/DVD tray from Raspberry Pi GPIO via H-Bridge

import RPi.GPIO as GPIO
import time
import sys
import signal

GPIO.setmode(GPIO.BOARD)

rxseger

#include <stdio.h>
#include <crypt.h>

int main(int argc, char **argv) {
        if (argc < 3) {
                fprintf(stderr, "usage: %s key salt\n", argv[0]);
                return -1;
        }
        char *result = crypt(argv[1], argv[2]);
        if (!result)

rxseger

decoding NEC pulses for power down button (0x4d) of RTL remote
http://www.sbprojects.com/knowledge/ir/nec.php

pulse, pause        = 0
pulse, pause pause  = 1

received using rtl_ir https://github.com/librtlsdr/librtlsdr/pull/9
$ ./rtl_ir
press the power button on the RTL remote, shows pulses:

rxseger

#!/usr/bin/env python

import threading
import time
import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD)

# GPIO pins

DrPaulBrewer

#include <complex.h>
#include <stdio.h>
#include <stdlib.h>

// rtlsdr-to-gqrx Copyright 2014 Paul Brewer KI6CQ
// License: GNU GPL 3.0
//
// IQ file converter for Software Defined Radio Programs rtl_sdr, gqrx
// from rtl_sdr recording format -- interleaved unsigned char
// to gqrx/gnuradio .cfile playback format -- complex64 

rtucker

#!/bin/bash

FONTFILE=/usr/share/fonts/truetype/freefont/FreeSerif.ttf
TEXT="BladeRF_ATSC_Demo_%T_Ch1"
VIDEOFILE="-i /home/rtucker/Videos/Bike?Cam/2012-09-09-002-afternoon.AVI"
AUDIOFILE="-i /home/rtucker/Music/Track?N?Field/Marathon/04?-?Track?N?Field?-?Iso?Maha.mp3"
OUTFILE="udp://127.0.0.1:1234?pkt_size=188&buffer_size=65535"

FILTERS="-vf drawtext=fontfile=${FONTFILE}:text=${TEXT}:x=100:y=50:fontsize=72:fontcolor=white@0.6:box=1:boxcolor=black@0.2"
VIDEO_CODEC="-vcodec mpeg2video -s hd720 -r 30"

rtucker

#!/bin/bash

FONTFILE=/usr/share/fonts/truetype/freefont/FreeSerif.ttf
TEXT="bladeRF_ATSC_Demo_TBM2"
VIDEOFILE="tbm_tdf_2.mp4"
OUTFILE="tbm_tdf_2.ts"

FILTERS="-vf drawtext=fontfile=${FONTFILE}:text=${TEXT}:x=100:y=50:fontsize=72:fontcolor=white@0.6:box=1:boxcolor=black@0.2 -t 327"
VIDEO_CODEC="-vcodec mpeg2video -s hd720 -r 25"
VIDEO_QUALITY="-b:v:0 8M"

rxin

#!/bin/bash

# From http://tech.serbinn.net/2010/shell-script-to-create-ramdisk-on-mac-os-x/
#

ARGS=2
E_BADARGS=99

if [ $# -ne $ARGS ] # correct number of arguments to the script;
then