Showing that make[1]: *** No targets specified and no makefile found. about ch341ser

[juliagoda]

make -C some_directory should contain Makefile from project path, not from /lib/modules/4.19.6-1-MANJARO/build path. Below is a result of building on my computer:

[juliagoda@juliagoda]: ~/Github/CH341SER/build>$ make -C ..
make: Wejście do katalogu '/home/juliagoda/Github/CH341SER'
make -C /lib/modules/4.19.2.ll5-2-juliagoda-git/build  M=/home/juliagoda/Github/CH341SER 
make[1]: Wejście do katalogu '/usr/lib/modules/4.19.2.ll5-2-juliagoda-git/build'
  Building modules, stage 2.
  MODPOST 1 modules
make[1]: Opuszczenie katalogu '/usr/lib/modules/4.19.2.ll5-2-juliagoda-git/build'
make: Opuszczenie katalogu '/home/juliagoda/Github/CH341SER'

in your case it would be:
make -C /home/akr/Downloads/CH341SER-master

Make sure you have project sources in /home/akr/Downloads/CH341SER-master

Source:
Make options

[juliagoda]

Well, so if you have cloned to /home/akr, then do:

cd /home/akr
make
make load

Everything is written in readme.txt. Please next time send me email or read more about commands, because it's not even an issue. I am closing it