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Do you run anything on a RISC-V processor?
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this post was submitted on 09 Apr 2024
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Currently, waiting for the Milk-V Oasis. Looking forward to a fully-compliant implementation in the SG2380. Should make for better mainline support.
That looks so cool. I was completely unaware that there were desktop motherboards with RISC-V CPUs. I thought they were all still SBCs.
It's set for release in H2 of this year. This should be an actual desktop-class processor, performance-wise. Mini-ITX form factor too! The RISC-V processors are going through generations blazingly fast. Probably partly because we hobbyists get to do some QA.
I would caution though that this is still likely in the territory of "dev board". Probably not going to be mainstream-ready and will have plenty of quirks. But, it's a really big step forward.
I'm thinking it might be my 2.5G router when it drops. Or worst case, maybe retire the Atom I'm using for a NAS.
I've been using some much smaller CH32V305 based keyboard controllers for a while, recently built a fightstick aroubd the platform. Now if only I fidn't suck at joystick games, having grown up on gamepads.
A homemade RISC-V fightstick? This is combining all of my favorite things! I bought a leverless controller recently (an SGF Bridget).
I'm only vaguely familiar with microcontrollers, but I know there are libraries out there for using an Arduino to make a mechanical keyboard or fightstick. Is there something similar for the CH32V305?
This is the firmware I've been working on. Basically I wrote it because at the time (early 2023) there wasn't a "good" keyboard firmware like QMK or ZMK for the CH32V305. Now it supports keyboards, joysticks, and a rudimentary pointing device made out of a PS2-style analogue stick.
https://gitlab.com/hakfoo1/ch32v-keyboard/-/tree/fightstick?ref_type=heads
That branch has the mapping I used. Note this firmware has a keyboard-centric assumption that switches are wired as a matrix (between two sense lines), even if that matrix is 1x24, rather than just grounding a sense line individually.
The stick portion was one of those "Pandora Box" devices that was built into a cabinet and pre-wired to a crappy Android TV box.
I bought it because I figured it was probably cheaper than cutting a decent looking cabinet and buying the buttons off AliExpress. That also meant it came with a predefined cable harness to fit the Android box. In the hopes of making it tidy, and reversible, I ordered a little throwaway PCB that accepted the existing 40-pin plug and bridged it to a nanoCH32V305 breakout board. Of course, I made a design mistake, so the PCB had bodge wires, so not much was saved.
If you're starting from scratch, you could direct-wire to the MCU breakout board.
I'm intending to use an Oasis for a NAS and virtualization host. If it plays nice, maybe put together a cluster.
Right there with you. I didn't have a console as a kid so, I'm pretty bad at fighting games. Have been holding back a bit in the MCUs as well but, mainly due to time constraints and waiting for my new hobby dev system to arrive. But, have a good number of plans for MCUs and other things - hopefully the SG2380 gets a bare chip release, like the SG2000/2002 because I want to try making a motherboard/SOM to move towards a fully FOSHW computer (pretty sure that the SG2380 isn't going to be OSHW initially but, being fully-compliant should be a good place to start).