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July 2020 Notes

VIDEO ENCODING.

http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-enc-images.html

https://video.stackexchange.com/questions/14907/how-to-downsample-4k-to-1080p-using-ffmpeg-while-maintaining-the-quality

OPENGL

https://www.linuxjournal.com/content/introduction-opengl-programming

https://github.com/go-gl/example/blob/master/gl21-cube/cube.go

https://kylewbanks.com/blog/tutorial-opengl-with-golang-part-1-hello-opengl

LORA

LORA https://github.com/hudsonvalleydigitalnetwork/hasviolet

MATRIX

https://www.hello-matrix.net/public_servers.php Unofficial selection of public Matrix servers

https://github.com/42wim/matterbridge bridge between mattermost, IRC, gitter, xmpp, slack, discord, telegram, rocketchat, steam, twitch, ssh-chat, zulip, whatsapp, keybase, matrix, microsoft teams, nextcloud and more with REST API

libpurple is a library used for developing IM programs.

YAGI for 2m

https://www.instructables.com/id/DIY-5-Portable-VHF-Yagi-Antenna-for-the-2-Meter-Ba/ by F4HWK

SPI Bus for Raspberry Pi

gpio pinout: https://www.raspberrypi-spy.co.uk/wp-content/uploads/2012/06/raspberry_pi_3_model_b_plus_gpio.jpg

https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md

Shell: : Write binary 1, 2 and 3 ; echo -ne "\x01\x02\x03" > /dev/spidev0.0

MOSI    P1-19
MISO    P1-21
SCLK    P1-23  |  P1-24    CE0
GND     P1-25  |  P1-26    CE1
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