@chris_gammell@chaos.social avatar

chris_gammell

@chris_gammell@chaos.social

Electronics, all day.

  • Co-host at The Amp Hour
  • DevRel at Golioth
  • Founder/Instructor at Contextual Electronics
  • Electronics Design at Analog Life Consulting

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chris_gammell, to random
@chris_gammell@chaos.social avatar

EV charging, chip fabs, manufacturing, large airliners, power storage, and more!

https://theamphour.com/666-good-energy-citizen/

chris_gammell, to random
@chris_gammell@chaos.social avatar

Held a meetup tonight where I wasn't sure if anyone was going to show up and 3 others did! Also I forgot that a smaller meetup group is sometimes allows for more in-depth conversations. Just like the old days of setting up meetups. Worked out pretty well in the end.

chris_gammell,
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To really get that throwback feel, need to have an event where no one shows. Happened a few times back in my Cleveland days, no worse for wear.

chris_gammell,
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@daryll It's always interesting about what might drive people to actually show. For some other meetups I'm adjacent to, it seems like having a regular date and time so people can plan around it is good and that ups the attendance. Having tried that myself, I've run into situations where the lack of novelty actually drives attendance down. I think novelty as a key feature is a good driver of attendance because it makes people feel a little fomo. What that novelty is depends on the type of Meetup.

chris_gammell,
@chris_gammell@chaos.social avatar

@daryll For past meetups that I ran, having a scheduled speaker actually introduced a decent amount of novelty because they were always talking about different things month to month. However, I'm not that interested in hosting a more formalized Meetup like that anymore. Mostly I don't want to deal with food and drink and I want to go somewhere so that people can purchase their own from the institution we're patronizing.

chris_gammell, to random
@chris_gammell@chaos.social avatar

I know the answer is "whenever the power company says is cheapest", but from a mental model perspective: is it better to plug in the car to charge on a sunny day where solar is generating excess capacity (on other roofs, not mine)...or better when the overall grid utilization is low, like in the middle of the night?

chris_gammell,
@chris_gammell@chaos.social avatar

@mattiem yeah, probably a better measure

chris_gammell,
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@DeweyOxberger @ferrix do you factor that into the payback time on the solar?

chris_gammell, to random
@chris_gammell@chaos.social avatar

Going to do another Hardware Happy Hour in the Durham/Raleigh/Chapel Hill (Triangle) area on May 7th. If you know any electronics enthusiasts who live around here, please let them know about the event!

https://www.meetup.com/hardware-happy-hour-3h-triangle-area-raleigh-durham-ch/events/300657525/

chris_gammell, to random
@chris_gammell@chaos.social avatar

Uh, maybe I will be careful around the buttons on this board

chris_gammell,
@chris_gammell@chaos.social avatar

@petrillic I prefer doot and redoot

chris_gammell,
@chris_gammell@chaos.social avatar

@pixel yes, but maybe less disconcerting than the little OLED screen that says, "What would you LIKE me to kill?"

chris_gammell, to random
@chris_gammell@chaos.social avatar

This first week back of TAH, we talked trade shows (#ew24), demos, light up hardware, bluetooth, obsolete processors, sustaining engineering, and more

https://theamphour.com/665-really-long-needle-nose-pliers/

chris_gammell,
@chris_gammell@chaos.social avatar

@mattiem oh hey, I'm pretending too!

chris_gammell, to random
@chris_gammell@chaos.social avatar

Oh right, Mastodon

chris_gammell,
@chris_gammell@chaos.social avatar

Why can't I remember to hang out here?

chris_gammell,
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@cda yeah, this is a slow burn, but luckily isn't the same "burn this place to the ground"

chris_gammell, to random
@chris_gammell@chaos.social avatar

Just found the "subtractive loft" feature in FreeCAD, and that just made my models significantly less sucky.

chris_gammell,
@chris_gammell@chaos.social avatar

@DeweyOxberger oo, new channel to me, thanks for the rec! Agree about finding features, gotta play around a lot. But then again, I'm a mechanical novice generally, so many of the concepts are new to me as well.

kwf, to random
@kwf@social.afront.org avatar

You can order 3D printed battery holders on eBay, so I finally mounted one of my DeWalt 20V chargers on the wall and made storage and "dead" holder rows for my battery packs.

$15 well spent. https://www.ebay.com/itm/225470177242

image/jpeg
image/jpeg

chris_gammell,
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@kwf If you found these from listening to me whine about battery stuff on TAH, you owe me another $15 :-D

chris_gammell, to random
@chris_gammell@chaos.social avatar

Motors built into PCBs. Seems like a straightforward concept, right?

In reality, it's really hard to do it properly. If you've searched on YouTube, you've probably seen Carl Bugeja's videos about his experimentations...failures and successes! He joined me to talk about his work on The Amp Hour this week:

https://theamphour.com/663-motors-on-pcbs-with-carl-bugeja/

chris_gammell, to random
@chris_gammell@chaos.social avatar

I got a new car! It's an EV and we discussed that and many other battery items on The Amp Hour this week: https://theamphour.com/662-the-non-stinky-car/

chris_gammell,
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@makingtolearn a zippy spaceship! Mine has a lot more pep than I'm used to...

chris_gammell,
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@carlosperate mentioned it a little bit in this post: https://blog.golioth.io/demos-well-have-at-embedded-world-2024/

Mostly utilizing the nRF52833 on board, as well as peripherals. Doing a BT Mesh demo where all the LED matrices light up at once.

tinkerworm, to random
@tinkerworm@techhub.social avatar

Speaking of designing battery enclosures in Cad, have you tried nightly/weekly builds of freeCAD @chris_gammell ? Adding to exsiting STL or such is not that hard

chris_gammell,
@chris_gammell@chaos.social avatar

@tinkerworm oh interesting! That's a new feature?

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