Server CoreOS Migration
After my server’s SSD died, I figured out how to use Fedora CoreOS to make redeployments almost trivial.
Recent Posts
Playing with 10BASE-T1S and 10BASE-T1L
Designed some boards and wrote an Open Alliance SPI driver to talk to the NCN26010 and ADIN1110 MAC-PHYs.
10BASE-T1L Converter w/ PoE+PoDL
Converts 10BASE-T to 10BASE-T1L. Powerable over PoE or PoDL and can be a PoDL injector. Theoretically works over 1km.
Zephyr Rubber Ducky
Inspired by Hak5’s design, I wrote a generic Zephyr app with similar core functionality. I even wrote a reverse shell payload to demonstrate.
k66f_usbhs
Quick little 2-layer BGA board with USB HS and SDHC.
lpc1768_poe
First time doing BGA w/ KiCad, PoE, nonstandard PHY, Ethernet magnetics, writing an Ethernet driver, and using the FreeRTOS+TCP stack.
Word Watch
Is this art?
Solder Dispenser
Compact, battery-powered, and uses ripple counting for encoderless closed-loop motor control. Not perfect, but consistent enough for 0402 parts.
Basic CH32V Zephyr Support
Added core support for the CH32X035 along with USB FS, USB PD, ADC, and UART drivers. Supporting other CH32V parts will be relatively straightforward.
RViCE ADC
First time using a RISC-V microcontroller, iCE40 FPGA, and an LTC2320 ADC. It streams 8 channels of differential 16-bit 48kHz ADC readings over USB as audio.
Baremetal C/C++ on CH32V (including FreeRTOS and TinyUSB)
Developing for CH32V using 100% open-source components, true to the essence of RISC-V.
Basic LPC845 Zephyr Support
While still lacking in many features, I’ve added just enough support to get the LPC845-BRK and my own LIN breakout working.