USB Interposer

An RP2040 board with hardware USB Device (plug) and software USB Host (socket)! The USB Interposer from 8086 is a compact RP2040-based board with two USB ports, the USB 2 Type-A plug is connected to the hardware USB device and the USB socket is connected to GPIO pins allowing it to be used with Pico-PIO-USB (a USB host/device implementation using PIO of Raspberry Pi Pico). The board also has 2 LEDs on each side (red/amber), 3-pin SH sockets for UART and SWD debug, and a 4-pin SH socket (STEMMA QT/Qwiic) for I2C. The BOOT button is also available as a user button. The USB Host port can be used with CircuitPython (USB HOST) or Arduino software.

GPIO Name Description

GP0 UART TX Serial Port

GP1 UART RX Serial Port

GP7 LED Top Red

GP8 LED Top Amber

GP12 Button User/BOOT

GP14 SDA I2C St/Qw Port

GP15 SCL I2C St/Qw Port

GP16 D+ USB Socket

GP17 D- USB Socket

GP18 USB PWR Enable USB Socket

GP22 LED Bottom Red

GP23 LED Bottom Amber

GP26 ADC /2 voltage on VBUS Input

GP27 ADC /2 voltage on VBUS Output

Package Contents

* 1x USB Interposer board