DSD TECH SH-U09C2 USB to TTL Adapter Built-in FTDI FT232RL IC for Debugging and Programming

I use mine to program breadboarded ATmega1284 microcontrollers. It works perfectly. There is a good tutorial online if you search for it. This product it very well made.

It's FTDI, works great at a good price. Buy it.

Works great - use to reprogram bk* chip

Over the past few years I have purchased seven of this adapters. I find them very useful, built with quality and well supported. Why buy 7? Each has been used on a different project (projects with FPGAs, Raspberry Pis and generic Arduino boards). I find the USB side works well with Windows and Linux --and-- the digital side works well with 5v and 3.3v. When I have asked questions back to DSD, I have gotten prompt, useful answers. Call me a happy customer.

Great product for USB to UART

I like that it has straps for various voltage levels. It has a clear case with clearly indicated signal lines - very nice. That will come in useful.If you just plug this thing in, it will not do anything.I use other FTDI devices (including some in our designs) and they just work by plugging them in. This one requires their driver, which is fine.After installing the driver, it wants a reset - unusual but ok.I wasn't ready to reset because I was in the middle of an edit and build so wanted to wait until later. The installation then proceeded the system to crash hard, with a blue screen and all the scary trimmings.It basically reset itself in a very rude way. That really irked me. I wasn't ready to reset and to see a blue screen seconds after installation is very disconcerting.After the PC came back up, the device worked. A bit clunky but does work.Save your work and install this thing when you're ready to reset.The price is right.

I spent the good part of a week looking for the AP-CBL-SER cable from Aruba to be able to console into some access points that had issues connecting to my controllers. After talking with an Aruba reseller and an Aruba account manager, I found that Aruba discontinued the AP-CBL-SER cable. On the Aruba Airheads Community, I saw a reference to another USB to TTL adapter, but decided to go with this one since it was in a protective plastic housing and it also came with a jumper cable. I was able to troubleshoot and get the 4 questionable access points back into production.

I originally got this adaptor because I needed to talk to a 1.8V product. Since then it's absolutely 100% rock solid performance has made it my go-to adaptor in my full time day job. This adaptor costs a lot more money than my cheapest adaptors but in my experience you get what you pay for. The authentic FTDI chip is always up for the task when connected to my Linux host. The same can not be said for some of my other adaptor cables.