# uUSB/USB-C CDC Serial Adaptor (3.3v)

3.3v UART to CDC USB adapter

- **Seller:** [8086 Consultancy](https://lectronz.com/stores/8086net), Nottinghamshire, ENG, UK
- **Price:** €3.83 (EUR, before shipping and taxes)
- **Availability:** In stock
- **Categories:** USB, Cables and adapters
- **Country of origin:** UK
- **HS code:** 8471800000
- **Product page:** https://lectronz.com/products/uusbusb-c-cdc-serial-adaptor-3-3v

## Options

**Connector**

- USB-C (439 left)
- Micro USB (84 left)

**USB Cable**

- No thanks
- Yes please (USB-C short) [Add €1.00] (0 left)
- Yes please (Micro USB short) [Add €1.00] (20 left)

## Images

![uUSB/USB-C CDC Serial Adaptor (3.3v)](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDkwMDcsInB1ciI6ImJsb2JfaWQifX0=--2c2dcbf57b07a912223d53bf62c09091c152e08e/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2024-07-13T16-52-26.250Z-IMG_20240713_173838.jpg)
![uUSB/USB-C CDC Serial Adaptor (3.3v)](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDkwMDgsInB1ciI6ImJsb2JfaWQifX0=--485ef2edd6ffddf7060e41ccd27d30d786da9f07/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2024-07-13T16-52-26.250Z-IMG_20240713_173854.jpg)
![uUSB/USB-C CDC Serial Adaptor (3.3v)](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDkwMDksInB1ciI6ImJsb2JfaWQifX0=--2ccc8c2ab2efa440998409d0e1695d4ebe7780ab/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2019-10-28T11-36-44.440Z-2019-10-27-2016.53.42.jpg)
![uUSB/USB-C CDC Serial Adaptor (3.3v)](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDkwMTAsInB1ciI6ImJsb2JfaWQifX0=--b9e00262bd49412f2192de1dc7182100629680b1/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2019-10-28T11-36-44.440Z-2019-10-27-2017.06.17.jpg)
![uUSB/USB-C CDC Serial Adaptor (3.3v)](https://lectronz-images.b-cdn.net/lectronz/active_storage/representations/proxy/eyJfcmFpbHMiOnsiZGF0YSI6NDkwMTEsInB1ciI6ImJsb2JfaWQifX0=--dc3b0a0703acdb8fe967f8bd440eef995d2597d8/eyJfcmFpbHMiOnsiZGF0YSI6eyJmb3JtYXQiOiJqcGciLCJyZXNpemVfdG9fbGltaXQiOls5NjAsNjQwXSwic2F2ZXIiOnsic3RyaXAiOnRydWV9fSwicHVyIjoidmFyaWF0aW9uIn19--970c165836a83091725a1a0fd4f37ce9408da1bf/2020-09-12T10-39-41.800Z-USBCDCSerial-3V3-3.jpg)

## Description

USB Serial Adaptor - with either **micro USB** or **USB-C** connector.

Plugs directly onto our Cluster HAT and MMC (SD) HAT to provide serial console access to the Raspberry Pi for quick access.

Using jumper wires it can be used to access the serial on a Raspberry Pi and for Arduino programming (using RTS for reset).

We use through hole connections on both micro USB and female 6 way 0.1" header for a more robust product over the surface mount alone.

| Pinout | Description |
| -------- | -------- |
| RTS | Request to send |
| RX | Receive (connect to remote TX) |
| TX | Transmit (connect to remote RX) |
| 3V | 3.3V supply (50mA max) |
| CTS | Clear to send |
| GND | Ground |

The following baud rates are supported

| Baud rate | Miss rate (%) |
| -------- | -------- |
| 2,400 | 0.16 |
| 4,800 | 0.16 |
| 9,600 | 0.04 |
| 19,200 | 0.04 |
| 38,400 | 0.16 |
| 57,600 | 0.16 |
| 115,200 | 0.16 |
| 230,400 | 0.16 |
| 460,800 | 0.79 |
| 1,700,000 | 0.84 |
| 2,300,000 | 0.62 |
| 3,400,000 | 0.84 |

This board can only be used with systems using 3.3 volts, connecting to those using higher/lower voltages may result in damage.

To enable serial console on a default Raspbian (or Cluster HAT) installation add "enable_uart=1" to your config.txt in the boot partition.

The IC is used in the adapter enumerates as a Communication Device Class (CDC) device which modern (Win10/Linux/Mac OS X) operating systems have built in drivers for.

## Shipping policy

Please ensure your address is full and correct before placing an order and be aware I'm unable to use some shipping methods to PO boxes.
Deliveries to the USA are sent using RoyalMail PDDP (Postal Delivery Duties Paid).