Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
If you are having a problem, please refer to the product documentation or check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.

USB bit cables: FTDI or CH340?

I've searched the Community and it appears the FTDI-based 8-relay boards will work with Flex USB ports. But will CH340 chip set work as well? Or is FTDI absolutely necessary? Thanks for and replies. 73

Best Answers

  • KD0RC
    KD0RC Member, Super Elmer Moderator
    Answer ✓

    Hi Mark, I believe that it needs to be genuine FTDI.

  • Gord-VA7GP
    Gord-VA7GP Member ✭✭
    edited October 2023 Answer ✓

    In general, over the past few decades, I've heard lots of folks talk about the FTDI chipset. I've used this FTDI chipset and had good results.

    But I have had excellent results also with the CH340 chipset - I'm using one right now in my office, and it is a good 20+ years old. I have two Winkeyers, each with one of these FTDI / CH340 and they both work. K1EL's currently-shipping version of his WinKeyer is Rev. C, using CH340.

    I might suggest, all else being equal, to go with the FTDI chip and be conservative. It's widely known to work. And just as important: someone can always take the best technology and screw it up :-O So, maybe also take a look at reviews for the finished product you're considering (like the 8-relay boards) to see that the entirety is actually going to be reliable for you.

    And also - there can be fakes of either chipset :-( I would hope and expect that a reputable manufacturer would weed these fakes out, and provide a solid product to the end-customer (you and me).


Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.