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That's a good lesson for people always wanting the famous brands. FTDI chips are more expensive and not better than the other ones, they need a special driver and they are subject to counterfeiting. You take a no-name one, and you have a standard stuff.

It's a stupid USB to RS232, not a rocket control system, there should be no famous brand, it's the lowest of the commodities.

That said, I do have an FTDI USB to serial adapter (no idea of the authenticity), because I didn't know better or care, I needed to plug my MCU board to my computer and I bought the first one I found (and it's just used for debug, I never ever use serial in real life).




The FTDI chips and drivers also have the ability to toggle a few extra pins. If you are making a device this can be important enough to lure you away from just being a generic USB Communications Device Class profile. (Think a 'reset' function or a 'enter firmware update mode' function.)

Given that as a consumer/purchaser I have no way of knowing if I have a counterfeit chip or if the next batch produced by a manufacturer will have them… I now have an incentive to avoid FTDI entirely when given a choice.


Moreover, they support many crazy baudrates and can be configured for any reasonable IO voltage.

This made me choose FTDI for my homemade everything-and-the-kitchen-sink UART dongle.

Oh, and they can blink LEDs.


Good remark. I didn't think about that, because I use a real USB chip for USB, I don't try to convert it to serial (I like the idea of having various communications going at once, the stall, etc.)


serial is your bread-and-butter on tiny low pin count underpowered IC's.

The V8's of the micro-controller world are great, but sometimes you have just 2000mAh to get you through a year of operation.


Does a lot more than just RS232. I believe it supports almost all serial protocols. Depending on what you're doing, it could be much more than just a simple display tty.


Is there even such a thing as a generic usb to serial chip for Windows? I ordered some ch340g chips from China, and now an nervous about installing a driver that might be malware.


With the no name brands (at least the ones that aren't just using FTDI's drivers) you are more likely to have to install a driver.




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