by Silicognition LLC

Image of Board

This board is an alternative to the Silicognition M4-Shim, and just like that board it is specifically made to fit on top of the PoE-FeatherWing, filling the empty space around the RJ45 and flyback transformer and allowing the creation of extremely compact Power over Ethernet systems.

Since the ATSAMD51J19 used on the M4-Shim is pretty much unobtainium right now, I needed to provide an alternative, and with good availability and popularity of the RP2040 this chip seemed like a natural choice. You get dual ARM Cortex-M0+ @ 133 MHz, 264 kB on-chip SRAM, PIO and 4 MB of QSPI flash!

The RP2040 comes with built-in UF2 bootloader, and the board has CircuitPython with Wiznet W5500 drivers pre-installed, plus a poe_featherwing.py module that sets the Ethernet connection up for you.

A special feature of this board is a custom chip to enable the familiar single-press to reset, double-press for bootloader button! So from a user experience point of view, it behaves the same as the M4-Shim.

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Absolute Newest

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.

Past Releases

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.