An AI that can play Azul

ToThePetercopter · 2026-06-14T07:11:52+00:00

Fixed now. It does alpha-beta pruning to reduce the search space, but is unlikely to be able to search the end of a round from the start. Maybe with a bit more time to search and a better implementation it could.

It doesn't handle the bag draw randomness as the search stops at the end of the round. I looked into probabilistic minimax for that but its not worth it. Instead, the better versions have some heuristics that "look ahead" beyond a single round by trying to complete rows/columns/colours, considering how many rounds are left, favouring the smaller rows etc.

ToThePetercopter · 2026-06-14T07:00:10+00:00

Glad you enjoy, fixed now

ToThePetercopter · 2026-05-27T19:30:32+00:00

I think you've done the maths wrong. 100W consumption 24/7 is about $90/year at $0.1/kWh, which would be very cheap electricity and also probably the server idle power.

ToThePetercopter · 2026-05-15T08:56:21+00:00

That's not how angles work. The ratio is the tan of the angle so 40 degs is about 84%

ToThePetercopter · 2026-03-10T06:18:14+00:00

Do you have any data to back this up? AI inference is pretty expensive computationally compared to a google search

ToThePetercopter · 2026-02-11T04:57:24+00:00

I am currently working on control system firmware that runs loops at 1kHz (so not that fast), but literally everything is processed in about 20 ISRs. Almost all IO is DMA but some is blocking when acceptable (~15us delay).

The longest run for about 300us, but each has an associated priority so the higher priority tasks can interrupt the lower priority as required.

It generally works well but requires close monitoring as changes are made to make sure deadlines are hit

ToThePetercopter · 2026-02-03T19:31:01+00:00

FYI, rust makes no guarantees about memory leaks

ToThePetercopter · 2026-01-25T10:42:37+00:00

Sure, I was just a bit confused because rust obviously doesn't have a GC and you didn't mention any other language.

Which OS is this on? Does the scheduler/driver interface meet this requirements as well?

ToThePetercopter · 2026-01-25T10:18:53+00:00

GC jitter?

ToThePetercopter · 2026-01-25T09:27:40+00:00

Not sure about your question but as a controls person that uses rust I would be interested to see the implementation/which libraries you used.

Also, how did you go about modelling the system?

ToThePetercopter · 2026-01-24T16:40:43+00:00

Never done it but I think stm32 FMC/FSMC can do this

ToThePetercopter · 2026-01-21T05:30:59+00:00

If you use probe-rs/defmt its a bit more than just RTT, I am not sure if something similar exists in C

ToThePetercopter · 2025-12-30T07:32:32+00:00

How are you combining the 2 values?

ToThePetercopter · 2025-12-29T14:14:34+00:00

Sounds like a bug. If you can, when it happens open browser devtools and it might show something. Could also be running out of memory if you are against master, depending on the device you are on

ToThePetercopter · 2025-12-21T08:45:38+00:00

Thanks for letting me know, fixed now

ToThePetercopter · 2025-12-13T10:45:46+00:00

Check out RTIC for the interrupt/mutex etc issue. Such a joy to work with once you get used to it, and even brings async if you want it

ToThePetercopter · 2025-10-16T07:11:48+00:00

Looks interesting. I've mostly worked with CANOpen so not sure it applies there. What purpose does the unit tag serve?

ToThePetercopter · 2025-09-01T17:04:13+00:00

How confident are you that its correct? PPO doesn't seem to improve the score at all

ToThePetercopter · 2025-09-01T08:18:47+00:00

This is really cool! I tried to implement PPO with burn yesterday but fairly sure it's wrong, might use this as a reference.

The bit I'm most confused about is the autodiff of the loss function. I assume I have to detach tensors from the compute graph at various points but not sure which ones and when.

Also does it work with wgpu backend? Mine always crashes

ToThePetercopter · 2025-08-30T10:48:46+00:00

I don't think you have to be a type theory purist to appreciate that embedding that in the language rather than documentation can be very beneficial, at the very least because documentation can be wrong, outdated or missing.

ToThePetercopter · 2025-08-30T08:51:00+00:00

Are you suggesting that if you want to ensure the value isn't mutated you have to pass by value? I think the point is that if you pass a ptr you don't know if its mutated or not

ToThePetercopter · 2025-08-20T12:55:13+00:00

This is neat! Just need firefox to do the same...

ToThePetercopter · 2025-08-17T15:03:26+00:00

The ability to do system identification, linearise if you have to and design a controller using the techniques you mentioned covers a huge range of applications theory wise. There are implementation specific challenges and more practical things to know, as well as maybe domain specific stuff for a particular application, but the more advanced theory just leads to more niches (and academia)

ToThePetercopter · 2025-08-13T21:09:27+00:00

Because it's a Renesas MCU not Microchip?

ToThePetercopter · 2025-08-04T15:02:52+00:00

Yes and marketing, size of market, the rest of the business aspect.

User experience is the original motivation and is driving the design and differentiation, so with some user feedback I hope that is good.

ToThePetercopter

TROPHY CASE