HiLetgo CP2102 USB 2.0 to TTL Module Serial Converter Adapter Module USB to TTL Downloader with Jumper Wires

I had to commuicate with a Waveshare TOF mini sensor board to change its settings and this worked perfectly.

Works with ESP32. You will have to press the BOOT and RST buttons to upload a new sketch to the microcontroller, though. Not a deal breaker for me. Keeping it.

Worked perfect after trimming shrink wrap back from USB port. It was keeping the adapter from plugging in all the way. It was so close it would power up but not communicate

Unlike in the photo, the pins at the end of the device (where you connect DuPont jumpers or clip pogo pins) were covered about 1/3 of the way from the circuit board.. so it made it impossible to connect DuPont jumpers. I had to get out some scissors and carefully cut away some plastic so the pins on the end were completely exposed and I could slide DuPont jumpers fully onto the pins. After installing the CP210x drivers from silabs.com, this worked fine. I like how it has a blue LED, so pretty! There is another USB to TTL serial connector available for about $0.50 less which also works just as well. Both are compatible with CP210x drivers. Used this to flash Sonoff S31 power plugs with Tasmota in Home Assistant. No issues whatsoever.

It did the one thing i bought it for, which was to flash the firmware on a game controller. Literally just install the driver and it'll work (It won't install automatically) RX/TX are 3.3v logic

Great for debugging your projects or either modding

20 years ago, in my Lab, I had designed almost same module to use for debug. But now, I can get it cheap and easily. But its specification needs a little points and here I wrote: 1. Tx & RX pins: 3.3V level. The Tx outputs 3.3V level without any load. So I expect signal level is 3.3V. 2. 3V3 & +5V pins: the module outputs for the external circuit. Now, it's perfect.

Like others, I used this to program a few devices over serial. Worked fine a year ago when I last used it, but hardware was not recognized by multiple Windows or Linux computers. I spent a lot of time thinking it was a software/driver issue but ultimately decided the hardware had failed. This seems to be a common theme with these. I will be looking for a different one based on a genuine FTDI chip, not a knock off that fails after very light use

Descrizione prodotto trovata per caso la descrizione su un sito per radioamatori, acquistata su Amazon, funziona perfettamente per la programmazione del WOUXUN KV-UVD1P, ricetrasmittente un po' datata ma ancora mooolto valida, per la quale la maggioranza dei rivenditori non avevano info tecniche o soluzioni.

As described

Funciona perfectamente, y ademas tiene 5V y 3V (creo, puede que sean 3.3V, no lo he comprobado) Se conecta perfectamente dando un serial de "0001" en la interfaz USB con el nombre de "CP2102 USB to UART Bridge Controller".

The clear heat shrink around the pcb extended too far over the usb plug and had to be trimmed back before it would go into the usb port. Once that was done the device was automatically detected and the proper drivers were loaded by the kernel. It worked as expected on a linux machine using: minicom -D /dev/USB0

This is a great bit of kit. I use these to replace the Prolific USB programing cables supplied with most Chinese handheld radios. There are so many fake Prolific cables out there it's not worth the hassle. So these 2102's were substituted and they work fine, every time.