Jacob Walser jaxxzer

🍑

rounding edges

jaxxzer / gstreamer-build.sh

Created February 15, 2017 21:33 — forked from sphaero/gstreamer-build.sh

Install & build gstreamer from git

	#!/bin/bash --debugger
	set -e

	BRANCH="master"
	if grep -q BCM2708 /proc/cpuinfo; then
	echo "RPI BUILD!"
	RPI="1"
	fi

	[ -n "$1" ] && BRANCH=$1

jaxxzer / gist:8717b3d30356920c496146c73c451fbd

Created June 16, 2017 17:09

Change I2C clock rate on RPI3

	Add to /boot/config.txt (units Hz):

	dtparam=i2c1_baudrate=50000

	Can go as low as 5khz

jaxxzer / gist:597abfdaad20e139f288c34d5b17240c

Created June 22, 2017 01:59

Convert intel hex to binary

	jack@jack-desktop:~/git/stm32flash-code(master)$ srec_cat file.hex -intel -o file.mot
	jack@jack-desktop:~/git/stm32flash-code(master)$ srec_cat file.mot -o file.bin -binary
	jack@jack-desktop:~/git/stm32flash-code(master)$ srec_cat file.mot -offset - -minimum-addr file.mot -o Altimeter-v2.31.bin -binary
	jack@jack-desktop:~/git/stm32flash-code(master)$ time ./stm32flash -g 0x0 -b 115200 -w file.bin /dev/ttyUSB1
	stm32flash 0.5

	http://stm32flash.sourceforge.net/

	Using Parser : Raw BINARY
	Interface serial_posix: 115200 8E1

jaxxzer / gist:c08e98306672b24fae98541b7f851746

Created September 13, 2017 19:07

Mount raspberry pi filesystem

	$ fdisk -l ardusub-raspbian-0.0.8.img
	Disk ardusub-raspbian-0.0.8.img: 3.1 GiB, 3349151744 bytes, 6541312 sectors
	Units: sectors of 1 * 512 = 512 bytes
	Sector size (logical/physical): 512 bytes / 512 bytes
	I/O size (minimum/optimal): 512 bytes / 512 bytes
	Disklabel type: dos
	Disk identifier: 0x1b4801d2

	Device Boot Start End Sectors Size Id Type
	ardusub-raspbian-0.0.8.img1 8192 92159 83968 41M c W95 FAT32 (LBA)

jaxxzer / gist:a49ee64d17a20a273317a80669a6890d

Last active September 13, 2017 19:33

Shrink Pi image

	In gparted, unmount the ext4, and resize the partition

	$ sudo parted /dev/sdg -s print
	Model: Generic Mass-Storage (scsi)
	Disk /dev/sdg: 7948MB
	Sector size (logical/physical): 512B/512B
	Partition Table: msdos
	Disk Flags:

	Number Start End Size Type File system Flags

jaxxzer / openssl_commands.md

Created August 28, 2018 15:29 — forked from p3t3r67x0/openssl_commands.md

Some list of openssl commands for check and verify your keys

openssl

Install the OpenSSL on Debian based systems

sudo apt-get install openssl

jaxxzer / partitioning.md

Last active August 29, 2018 23:09

check the disk

lsblk -f

unmount the disk

umount /dev/sdX?*

jaxxzer / pipelines.txt

Last active December 12, 2023 22:54

gstreamer pipelines

	// rtsp receivers:
	gst-launch-1.0 rtspsrc location="rtsp://192.168.0.102:8554/test" protocols=GST_RTSP_LOWER_TRANS_TCP latency=0 ! rtph264depay ! decodebin ! videoconvert ! autovideosink sync=false

	gst-launch-1.0 rtspsrc location=rtsp://192.168.1.156:8554/test ! rtph264depay ! h264parse ! avdec_h264 ! videoconvert ! autovideosink


	// Stream video to window and record it to file
	gst-launch-1.0 -e -v udpsrc port=5600 ! tee name=VIDEOWINDOW ! queue ! application/x-rtp, encoding-name=H264, payload=96 ! rtph264depay ! h264parse ! mp4mux ! filesink location=myvideo.mp4 VIDEOWINDOW. ! queue ! application/x-rtp, payload=96 ! rtph264depay ! avdec_h264 ! autovideosink

jaxxzer / gist:23325a7f87c51161801cad709c7e02ac

Created November 2, 2020 23:39

Verify Pixhawk SD card

	#!/usr/bin/python

	# - verify that logging to sd card is working OK

	import os
	import time
	from pymavlink import mavutil
	from argparse import ArgumentParser

	parser = ArgumentParser(description=__doc__)

jaxxzer / gist:f10a9c316339fd1c419a7f818b5df8bd

Created November 2, 2020 23:43

Erase parameters

	#!/usr/bin/python

	# - erase autopilot parameters (reset to defaults)
	# - reboot autopilot to apply changes

	import os
	import time
	from pymavlink import mavutil
	from argparse import ArgumentParser