IZOKEE CP2102 Module USB to TTL 5PIN Serial Converter Adapter Module Downloader for UART STC 3.3V and 5V with Jumper Wires

Never had any UART debugging tools before, got this and it went a lot smoother than I expected.They come in a heat shrink tube cover, which is useful for preventing the circuit from shorting out on metal tables.I did end up needing to trim the heat shrinking a little bit in order to get the wires attached, but upon my second attempt of putting the wires onto the pins, it is possible to get all the wires attached without needing to trim the heat shrink.Personally find the two for one bundle a great value as compared to other listings which charge 2x the price of this for only one.I've left one of them plugged in 24/7 for several months now to debug a fussy modem, and it is still running letting me log the output without any issues.

This guy works great.This converter interfaces directly to the TTL Rx and Tx serial pins of common microcontrollers. The logic level of these microcontroller pins is inverted RS232 and the device operates like a MAX232 except the output is USB and not RS232. Connection to a computer requires a MALE/FEMALE USB cable and not the standard dual male type. I view the output with the TERA TERM emulator. The applicable com port can be discovered in the device management menu (WIN X) under COM PORTS.

I've only used one of the two so far. I just used it to program a handful of Tasmota boards. Either perfectly. Quick and easy.I did have to download drivers for Win10, as the default drivers were not properly running the device. The drivers were very easy to find on Google.

Hit or miss QC it seems....Received 2X boards, one worked perfectly right out of the bag, the other had a very loose USB connector and was continuously connecting/disconnecting from the PC when plugged in. Upon further investigation it seems the metal USB connector was not soldered to the circuit board, not even a poor solder job... but zero solder. It was only hanging on the pc board by the two metal tabs on the side of the connector. Anyway, a quick two min fix with the soldering iron and the connector was now making contact with the four pads on the board and it worked perfectly when plugged in to the computer.All-in-all a decent deal if you're willing to possibly put in a little effort to overcome factory QC over-sites.

The IZOKEE CP2102 Module works exactly as expected. Setup was quick and straightforward—drivers installed without any issues, and the module was immediately recognized by my computer. It supports both 3.3V and 5V, which makes it versatile for different projects.The included jumper wires are a nice bonus and make prototyping much easier. I’ve tested it with multiple microcontrollers, and the data transfer has been stable and reliable every time. Build quality feels solid for the price, and the compact size is perfect for my toolkit.Overall, this is a dependable USB to TTL adapter that’s affordable, easy to use, and great for hobbyists and developers alike. Highly recommended!

Works as expected, however the CP2102 is locked and therefore unable to change the VID/PID if required

I know those from China websites goes for few dollars each but in US if you need to get them fast hard to beat such value (9$+tax). I have used those to flash my SONOFF S31 Smart Plugs to Tasmota and tried another which was more expensive and one per pack - wasted time as the one I got was not working at all so in this package having two per order and for less money was a no brainer as if one is bad you still can use second one to do the job.

There's not much to say, they work out of the box with Ubuntu, showing up as /dev/ttyUSB0 which Arduino IDE expects and communicates with. ;PI bought some cheap micro-controllers a couple of weeks ago that implied that they could be programed through their usb connection. Now that I have this USB to TTL connector, I can actually use those microcontrollers.