Product description: RP2350 - HSTX 22-pin FPC to DVI / HDMI adapter - Adafruit 6055
The Adafruit HSTX 22-pin FPC to DVI Adapter is an expansion board designed for the new HSTX interface built into the RP2350 microcontroller . Unlike the RP2040, which required complex PIO configuration, the RP2350 allows you to generate DVI signals directly, efficiently, and reliably . The adapter provides full logic level matching, signal filtering, and a DVI connector. Connect it via a 22-pin FPC ribbon cable to the Feather RP2350 board and start generating high-resolution video without any complicated setup.
RP2350 - HSTX 22-pin FPC to DVI/HDMI adapter - Adafruit 6055.
The adapter allows you to easily connect DVI (HDMI) displays to the RP2350 Feather board.
Main features of the adapter
- RP2350 Feather Compatibility : Dedicated adapter for HSTX interface
- DVI/HDMI Support : Allows you to connect monitors and displays via DVI
- No need for PIO and overclocking : simplified operation compared to RP2040
- High resolution : support for 640 x 480 px (4/8 bit), or 320 x 240 px (16-bit)
- I2C, CEC and HPD signal support : communication with the monitor's EEPROM and connection detection
- Compact design : just 25.9 x 24.9 mm - perfect for mobile projects
- 22-pin FPC connector : fast and stable connection to the RP2350 board
- Low power consumption and easy assembly : plug and play with Adafruit documentation
Pins and connectors
There are two main connectors on the board: a 22-pin FPC connector for HSTX communication and a DVI port . Connections include:
- GPIO12 - GPIO19 : 8 HSTX lines for data transfer (TMDS)
- GPIO14, GPIO15 : TMDS clock (CKP, CKN)
- GPIO18 - GPIO13 : video data (D0-D2 P/N)
- GPIO11 : Hot Plug Detect (HPD)
- GPIO10 : CEC - Controlling devices via HDMI
- GPIO2, GPIO3 : I2C lines (monitor EEPROM)
- 3.3 V, GND : power supply and ground
Additionally, there are CEC and HPD jumpers that can be cut to deactivate these lines.
The adapter supports I2C for reading the display EEPROM and Hot-Plug Detect (HPD) and CEC functions.
When used with CircuitPython, the adapter allows you to generate an image with a resolution of 640 x 480 px.
Support in CircuitPython
The adapter works with the picodvi library in CircuitPython, which allows you to easily create video framebuffers. You can display bitmap images or dynamic graphical content directly on an HDMI monitor . Simply connect the FPC cable to the Feather RP2350 board and load the pre-built code from the Adafruit repository.
Ready-made examples and a project bundle with code and test graphics are available—simply copy them to CIRCUITPY's memory. Supported resolutions include 320 x 240 px (with pixel doubling) and 640 x 480 px with lower color depths (4/8 bit or grayscale). No additional libraries are required—everything runs on the built-in CircuitPython modules.
Adapter technical specifications
- Compatibility: Adafruit Feather RP2350 (HSTX)
- Interface: HSTX to DVI (TMDS)
- Connectors: FPC 22-pin, DVI
- Supported GPIO: GPIO10 - GPIO19, I2C (GPIO2, GPIO3)
- HPD, CEC, EEPROM support via I2C
- Dimensions: 25.9 x 24.9 x 7.8 mm
- Weight: 4.3 g
Contents of the set
- 1x RP2350 - HSTX 22-pin FPC to DVI / HDMI adapter - Adafruit 6055
Attention!
The 22-pin FPC ribbon cable is not included in the kit - it must be purchased separately.
Its compact dimensions make the adapter suitable for many projects.
