

🔌 Unlock seamless MCU communication — don’t get left offline!
The HiLetgo CP2102 USB 2.0 to TTL Module is a compact, high-performance serial converter featuring a stable CP2102 chipset, supporting baud rates from 300 bps to 1.5 Mbps. It offers universal OS compatibility (Windows, Mac, Linux) and a 6-pin TTL interface for versatile MCU connections. Designed for durability with a wide temperature range, it’s the go-to adapter for reliable, plug-and-play serial communication.
| ASIN | B00LODGRV8 |
| Best Sellers Rank | #5 in Serial Adapters |
| Customer Reviews | 4.4 4.4 out of 5 stars (904) |
| Date First Available | July 10, 2014 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.32 ounces |
| Item model number | 3-01-0103-B |
| Manufacturer | HiLetgo |
| Product Dimensions | 4.3 x 0.6 x 3.1 inches |
G**.
Great for getting root access!
I recently acquired a semi-broken router that has a UART connector on it, and I needed to talk to it. This device makes it easy to talk to anything that has TTL or UART. It's super easy as it's plug and play! Just plug the cables into the right pins on the adapter, then plug it into your computer. It's worked with all of the devices I've tried it with, which makes it super functional. I would definitely recommend this high-quality product to anyone who needs a direct serial connection.
J**R
Shrink wrap was too long on usb plug on mine.
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
R**B
Works great with AVR chips
Works out of the box with Linux and AVRs (I interfaced with an ATMega168)
B**F
Works, could be nicer.
I used this serial converter to un-brick a router I had screwed up. It took a bit of work, but the product works. 4 stars because the cables could be nicer, and the shrink wrap kind of prevents you from being able to use the dongle. Not the easiest to use, but you get what you pay for.
Q**.
Good
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
K**R
Too Nice for firmware development
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.
C**B
Gets the Job done
I have bought a lot from HiLetgo and I think that it is a little over priced so value is not the best for the quality, where the heat shrink was not shrunk down completely. But is easy to use and gets the job done so definitely functional and easy to connect especially if running Linux its plug and play compatibility for windows just download one driver and it works.
C**I
Works great with ESP32 👍
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.
L**I
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.
J**W
As described
C**N
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".
N**E
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
M**N
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.
Trustpilot
2 months ago
2 months ago