VoltLink CP2102N

Overview

The VoltLink CP2102N is a USB-to-serial adapter and programmer designed by Voltlog as a reliable alternative to budget adapters that often use counterfeit chips. It uses a genuine Silabs CP2102N sourced from reputable distributors, ensuring consistent performance and compatibility.

Key Features

• Genuine Silabs CP2102N — no counterfeit chip issues, sourced from authorized distributors
• USB Type-C connector — modern, reversible, and durable
• Auto-reset circuitry — automatically handles ESP32 IO0 and EN pin reset during flashing, eliminating manual button pressing
• Onboard 3.3V 500mA LDO regulator — can power downstream devices directly
• ESD protection — built-in electrostatic discharge protection
• Resettable overcurrent protection — PTC fuse rated at 0.75A
• Dual connector options — supports both 0.1" pin headers and JST-SH 1.0mm 6-pin connectors
• 5V tolerant I/O — CP2102N pins are 5V tolerant while operating at 3.3V logic
• Up to 3 Mbaud — high-speed serial communication

Use Cases

• Flashing ESP32, ESP8266, and other serial-programmable microcontrollers
• Programming Shelly devices (1Plus PM, 2.5, Dimmer 2, EM, Plus 1PM, Pro1, Pro2) with optional custom adapter
• Installing Tasmota or ESPHome firmware on IoT devices
• General USB-to-UART serial communication and debugging

What's Included

• 1x VoltLink CP2102N adapter
• 1x 6-pin 0.1" header
• 1x JST-SH 6-pin pigtail cable

Mounting

Four M3 mounting holes are provided for enclosure mounting. The design is compatible with 3D-printable enclosures.