Neal Wilson ✅ @neal@social.typica.us

Heard a news teaser on the radio, "It's hot out and heat is to blame."

I don't know how grocery stores usually decide what to sell, but I think the one I was at today pays attention to what I buy repeatedly and then discontinues those things. Bought the last half case of a thing on closeout for cheap, but I might have to switch stores.

Rendering the next video. I jammed out some new background music to hide issues with the voiceover recording that I couldn't fix, so that's maybe something to look forward to?

Today's coffee is a medium roast (by which I mean roasted just into the start of 2nd crack) natural pacamara from El Salvador which has a bit of flavor reminiscent of eating the ripe fruit from a coffee plant. Interestingly, I also run this coffee out to a very dark roast but take the end of the roast fast enough to preserve some of that flavor.

Replacement switches arrived today so I'll be staying a little late at work to install those. I got two because in addition to the switch that exploded there's another one that is about to explode but just got swapped for a good switch on a function that never gets used, so I'll replace both of those.

I should buy a pizza.

Bought a purple game controller. I looked at the available color options and purple was clearly the best choice.

I did a screen recording of the batch I tested this with and will probably upload it with some commentary later.

Talking with the other person who roasts coffee regularly, we both picked up on a thing that we didn't like about using #1 (already a big improvement over not using either) without #2 and introducing #2 seems to have made the issue go away entirely and since the whole system is running fast enough, the measurement lag isn't discernible.

Obviously the various parameters need to be adjustable as this sort of thing tends to need to be tunable to the specific roasting system and measurement hardware in use.

The new filter worked better than I expected in a live data situation. This combines two ideas:

1. Sample the data as fast as possible and periodically solve at a slower rate a more regular linear regression as of the current timestamp with all measurements since the last time that happened.

2. Combine this result with an exponentially weighted moving average. I set an alpha of 0.34 based on messing around in a spreadsheet.

This turns out to be a very nice improvement.

Going to try out a new measurement filter at the coffee roaster. The hardware that I'm using isn't quite as nice as what I used to have there (which is no longer supported on anything other than Windows and maybe in theory some very specific but obsolete version of Linux/distro) but the sample rate is high enough that I can apply statistics to the problem. Did a test run in a spreadsheet to work out starting parameters, but I'll feel better seeing if it works live.

Aliexpress has somehow gotten the idea that I want to buy NES carts pre-loaded with ROM hacks.

Cat wants to lick my wrist.

Somehow failed at pouring myself a cup of milk. Put the milk back in the fridge and then noticed the cup was still empty.

Apparently after I left work one of the espresso machines had an electrical explosion. I should be able to get a good enough temporary fix in the morning, but fortunately I know exactly what the real fix is so I've gone ahead and ordered an inexpensive replacement part.

I'm working with another person on developing and delivering a new coffee roasting class for this event. This is reliably my favorite trade event to get out to and am looking forward to having some good conversations. Early bird discount is coming to an end soon. I'd mention CRG and SCA by handles, but I don't think they're on fedi. https://crgretreat.coffee

Finished up a feature that I've been working toward for a little while. Visually it's not perfect, but it does what it needs to do and right now that's pretty much all I'm going for.

Decided to try out a new recipe as a later in the day thing where it's not a problem if it turns out to not be something that I can sell after all. While I'll see how it tastes when I'm done, I'm not particularly impressed by the recipe so far. I have a few ideas for recipe modifications that I might try next week.