Dual voltage capability supporting both 3.3V and 5V logic levels, typically selectable via a jumper.

Most variants utilize a Mini USB or USB-C connector. Detailed Pinout & Schematic Logic

Standard 6-pin header including DTR, RXD, TXD, VCC, CTS, and GND .

The YP-05 is designed for versatility and ease of use in breadboard projects or embedded system debugging: FTDI FT232RL (or compatible clones).

The is a ubiquitous USB-to-Serial (TTL) adapter module commonly used by hobbyists and engineers for programming microcontrollers like the Arduino Pro Mini , ESP8266 , and ESP32-CAM . Built around the FT232RL chipset from FTDI, it serves as a bridge between a computer's USB port and a device's UART (Universal Asynchronous Receiver/Transmitter) interface. YP-05 Module Specifications

Since the ESP32-CAM lacks a built-in USB port, the YP-05 is frequently used to flash firmware. This requires connecting U0R (RX) to TX , U0T (TX) to RX , and bridging GPIO0 to GND to enter flashing mode.