Programmable USB Hub
by Capable Robot Components
In addition to being a 4-port USB 2 High-Speed hub, this Programmable USB hub is also:
- A CircuitPython based development board.
- A bridge between your computer and I2C (via Sparkfun Qwiic connectors), GPIO, and SPI (via its mikroBUS header).
- A power supply, providing 6 A of 5 V power to downstream devices and 13 mA resolution monitoring (per-port).
- A USB to TTL Serial adapter.
- A flexible embedded electronics test and development tool.
- Functionally flexible. Open source python drivers on the upstream host and Python firmware on the internal MCU allow the behavior of this USB hub to be easily changed to suit your application and environment.
Have some info to add for this board? Edit the source for this page here.
This is the latest stable release of CircuitPython that will work with the Programmable USB Hub.
Start here if you are new to CircuitPython.
Built-in modules available: alarm, analogio, board, busio, digitalio, math, microcontroller, nvm, onewireio, os, ps2io, pwmio, rainbowio, random, rtc, storage, struct, supervisor, time, usb_cdc, watchdog
This is the latest unstable release of CircuitPython that will work with the Programmable USB Hub.
Unstable builds have the latest features but are more likely to have critical bugs.
Built-in modules available: alarm, analogio, board, busio, digitalio, math, microcontroller, nvm, onewireio, os, ps2io, pwmio, rainbowio, random, rtc, storage, struct, supervisor, time, usb_cdc, watchdog, zlib
Every time we commit new code to CircuitPython we automatically build binaries for each board and language. The binaries are stored on Amazon S3, organized by board, and then by language. Try them if you want the absolute latest and are feeling daring or want to see if a problem has been fixed.
All previous releases are listed on GitHub, with release notes, and are available for download from Amazon S3. They are handy for testing, but otherwise we recommend using the latest stable release. Some older GitHub release pages include the same binaries for downloading. But we have discontinued including binaries as assets on newer release pages because of the large number of files for each release.
Update UF2 Bootloader
Latest version: v3.14.0
The bootloader allows you to load CircuitPython, MakeCode, and Arduino programs. The bootloader is not CircuitPython. You can check the current version of your bootloader by looking in the INFO_UF2.TXT file when the BOOT drive is visible (FEATHERBOOT, CPLAYBOOT, etc.).
It is not necessary to update your bootloader if it is working fine. Read the release notes on GitHub to see what has been changed. In general, we recommend you not update the bootloader unless you know there is a problem with it or a support person has asked you to try updating it.
To update, first save the contents of CIRCUITPY, just in case. Then double-click the reset button to show the BOOT drive. Drag the update-bootloader .uf2 file to the BOOT drive. Wait a few tens of seconds for the bootloader to update; the BOOT drive will reappear. After you update, check INFO_UF2.TXT to verify that the bootloader version has been updated. Then you will need to reload CircuitPython.