| Neuromorphic Engineering | https://sites.google.com/d/0B_fY3ol6clHmY1h5OFRxa1NjQmM/p/0B_fY3ol6clHmalpVU1JEcGNFYlU/edit?resourcekey=0-atDquMq9_PQEWqa3EHXeTA |
| Engineering | https://www.youtube.com/channel/UCQxFumV2LMrKBMDW6dar_ZA |
| Discord | iPostHuman#7146 |
Got a little carried away in inkscape on the silkscreen for this ESP32-C3 based controller board for controlling some flipdot display modules.
Using this plugin from PCM, which makes the KiCad to blender process super easy: https://github.com/30350n/pcb2blender
I'm super happy that my latest chip Greyhound has been accepted for production! 🥳
It was designed with open source EDA tools and the IHP Open Source PDK.
Find out more here: https://github.com/mole99/greyhound-ihp
And down below ⬇️
Aerium Lumen – An NVIDIA Jetson carrier board for drones and robots
Aerium System’s Lumen is a carrier board for NVIDIA Jetson SO-DIMM modules designed specifically for drones and robots with a range of low-profile connectors for I/Os for USB, UART, I2C, etc…, and three M.2 sockets for storage and wireless expansion. It targets the same applications as ARK Electronics’ NDAA-compliant Jet…
https://www.cnx-software.com/2025/04/08/aerium-lumen-an-nvidia-jetson-carrier-board-for-drones-and-robots/
TARIFF TALK! WITH LADYADA 🌍🚢 - Join Ladyada as she breaks down how recent tariff shifts impact electronic component availability and pricing, reshoring trends, and what may happen to engineering/BOM and DIY project costs. Get the inside scoop on navigating supply chain challenges while keeping your builds affordable and excellent! All this week on ASK AN ENGINEER WEDS 8PM ET on all the socials.
I'm super happy that my latest chip Greyhound has been accepted for production! 🥳
It was designed with open source EDA tools and the IHP Open Source PDK.
Find out more here: https://github.com/mole99/greyhound-ihp
And down below ⬇️
🧠 So what does it do? It is part RISC-V SoC and part eFPGA.
At its heart is the CV32E40X from the OpenHW group (https://github.com/openhwgroup/cv32e40x) and an FPGA fabric generated using the FABulous framework (https://github.com/FPGA-Research/FABulous).
While the SoC is fairly basic with a QSPI Flash and PSRAM controller, 8kB of SRAM and a UART, more functionality can be implemented using the embedded FPGA.
The FPGA itself is relatively small (less than 1k LUT4) but has some nice primitives such as SRAM, MAC and dedicated register files. Greyhound's embedded FPGA can be used as a custom instruction extension, as a peripheral or as a completely standalone FPGA with 32 I/Os.
- Missing a peripheral? Simply implement it with the eFPGA.
- Want to speed up code execution? Write your own custom instruction extension.
And best of all: You can generate the FPGA bitstream using upstream yosys and nextpnr.
I'm really glad that I completed this project as part of my Master's thesis.
This wouldn't have been possible without the open source community providing IPs and frameworks to build on. I'm also grateful to IHP GmbH and the publicly funded IHP-Open-DesignLib that enabled the tapeout of this chip.
- IHP Open Source PDK: https://github.com/IHP-GmbH/IHP-Open-PDK
- IHP-Open-DesignLib: https://ihp-open-ip.readthedocs.io/en/latest/
If you have any questions about Greyhound or about open source chip design in general, feel free to ask!
@mole99 This is something I hope future microcontrollers do... allocate a bit of fabric to custom peripherals so that you can add your own.
Beagle PRUs, RP2040 PIOs, and "that STM32 feature that exposes a parallel bus externally whose name I forget" are halfway there :D.
@pyromuffin Depends on the conditions 😉
- nom_fast_1p32V_m40C: 85 MHz
- nom_typ_1p20V_25C: 55 MHz
- nom_slow_1p08V_125C: 34 MHz
This is for the SoC, the max frequency for the FPGA depends of course on your design.
Note that this is on a 130nm process.
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