some useful hints¶
ESP8266¶
- To program the ESP module -> ground GPIO0 before downloading a code.
documentation¶
draw.io¶
-
Open the XML (or create new one) with https://www.draw.io/
-
Make your changes
-
Export the Image as PNG and get the XML source
plantuml¶
@startuml
(*) --> "First Activity"
"First Activity" --> (*)
@enduml
- http://ogom.github.io/draw_uml/plantuml/
- http://plantuml.com/sitemap-language-specification
- https://real-world-plantuml.com
- https://www.planttext.com
open preview at VSC
- Ctrl + Shift + N -> to open a new window
- point to a different root folder
- Ctrl + Shift + V -> open markdown preview mode
- Alt + D -> to render plantuml
git bash¶
cmd | task |
---|---|
git checkout -b |
make new feature branch |
git checkout Pre_Master | merge feature branch to Pre_Master |
git pull | merge feature branch to Pre_Master |
git merge |
merge feature branch to Pre_Master |
git push --delete origin |
delete feature branch |
git branch -d |
delete feature branch |
S3 sync family pics¶
via aws console¶
-
open url signin.aws.amazon.com/console/s3
-
enter access data
password is provided on another way
- select S3 bucket family-sync-pics
at console.aws.amazon.com/s3/home klick at family-sync-pics
upload pictures¶
Hint
Zip your pictures before uploading.
- Navigate to folder
- Create
folder_my_name
-
Navigate to
folder_my_name
-
Select Upload
-
In new window, add your zip file
- Than
Upload
with default settings
download pictures¶
-
Navigate to folder
-
Select zip file you want to download
-
Than klick on
Download
via aws cli / access key¶
TODO
raspberry¶
install os¶
- Run
lsblk -p
to see which devices are currently connected to your machine.
alex@linux-mint:~$ lsblk -p
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
/dev/sda 8:0 0 238,5G 0 disk
├─/dev/sda1 8:1 0 499M 0 part
└─/dev/sda4 8:4 0 237,9G 0 part
/dev/sdb 8:16 0 477G 0 disk
└─/dev/sdb2 8:18 0 476,4G 0 part /
-
Insert SD card
-
Run
lsblk -p
again. Check for the new device
alex@linux-mint:~$ lsblk -p
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
/dev/sda 8:0 0 238,5G 0 disk
├─/dev/sda1 8:1 0 499M 0 part
└─/dev/sda4 8:4 0 237,9G 0 part
/dev/sdb 8:16 0 477G 0 disk
└─/dev/sdb2 8:18 0 476,4G 0 part/
*** NEW ***
/dev/sdc 8:32 1 14,7G 0 disk
├─/dev/sdc1 8:33 1 56M 0 part /media/alex/boot
└─/dev/sdc2 8:34 1 14,6G 0 part /media/alex/13d368bf-6dbf-4751-8ba1-88bed0
- Unmount SD card (with partitions)
In this example the SD cards name is /dev/sdc
.
umount /dev/sdc1
umount /dev/sdc2
- Prepare image
Go to download folder of the raspi os image
alex@linux-mint:~/Downloads$ ll
drwxr-xr-x 3 alex alex 4096 Aug 19 17:23 ./
drwxr-xr-x 44 alex alex 4096 Aug 19 14:22 ../
-rw-rw-r-- 1 alex alex 452715448 Aug 19 17:10 2020-05-27-raspios-buster-lite-armhf.zip
unzip if not jet done
7z e 2020-05-27-raspios-buster-lite-armhf.zip
- Copying the image to SD card
dd bs=4M if=2020-05-27-raspios-buster-lite-armhf.img of=/dev/sdc conv=fsync
Hint
you can also combine unzip and copying the image
unzip -p 2020-05-27-raspios-buster-lite-armhf.zip | sudo dd of=/dev/sdc bs=4M conv=fsync