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Posted by jpluimers on 2025/09/11
On my list of things to try out (and see if it is better than an NTP clock):
--jeroen
Posted in Development, Hardware Interfacing, Legacy Ports: COM, Software Development, USB | Leave a Comment »
Posted by jpluimers on 2018/06/08
Be sure to read the comments at USB serial converters from FTDI are quite popular – Thomas Mueller (dummzeuch) – Google+ [WayBack] as it tells more about how to set genuine and fake FTDI chips apart (often before buying them, you cannot tell) and how to replace fake ones buy genuine ones.
Getting back to original means de-soldering fake chips, and soldering new genuine chips on the boards.
Fake chips:
Note that the workarounds for these fake chips mean you cannot use more recent chips.
Fake chips can cause you a lot of headaches – and time – sorting out communication problems: [WayBack] esptool-ck, esp8266, and FTDI Bug Hunting – vilimblog
Two years ago, this shoot-out (with results on github) had a great conclusion:
Buy either an adapter with a genuine FTDI chip, or one of the Silicon Labs CP2102 chips.
The FTDI chip is the only one attaining 3M baud rates.
Overview articles:
SiLabs chips seem to be the only without much trouble:
cp210x device, no matter the chip source:
I haven’t seen or recognized a fake CP210x chip yet, so my guess would be that these are generally fine no matter where you get them. One big advantage of those is the integrated voltage 3.3V regulator, which can save some space when rolling your own boards.
FTDI related:
ft232r_prog, then re-program using sudo ./ft232r_prog --new-pid 0x6001 as per (already archived original is gone) Unbrick FT232 counterfeit chip | Weird-Lab:
$ sudo apt-get install make gcc libftdi-dev
$ wget http://rtr.ca/ft232r/ft232r_prog-1.24.tar.gz
$ tar -zxvf ft232r_prog-1.24.tar.gz
$ cd ft232r_prog-1.24
$ make
$ sudo ./ft232r_prog —old-pid 0x000 —new-pid 0x6001
Genuine FTDI seems to be the easiest to find:
Prolific has similar issues, driver v3.4.25.218 still works with fake chips:
–jeroen
Related posts where I mentioned some of the trouble with FTDI chips:
Posted in *nix, Development, Hardware Development, Hardware Interfacing, Legacy Ports: COM, Linux, openSuSE, Power User, SuSE Linux | Leave a Comment »
Posted by jpluimers on 2017/03/30
Some links that helped me getting FTDI USB serial communication to Raspberry Pi systems going:
–jeroen
Posted in Apple, Communications Development, Development, Hardware Development, Hardware Interfacing, iMac, Legacy Ports: COM, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, OS X 10.10 Yosemite, OS X 10.9 Mavericks, Power User, Raspberry Pi, USB | Leave a Comment »
The Wiert Corner - irregular stream of stuff 