Tucoplexing seems interesting, but I gotta figure out exactly how pin starved I am (I don't think it's quite necessary yet)

I do think I can build this same matrix with 6 pins rather than 8 though, just by splitting the column half of the matrix between led and switch.

I think this is cheaper pin wise than splitting off the led portion to its own Charlieplexed thing (25 LEDs and 25 switches could be driven from 15 pins rather than 16 pins).

Unfortunately you can't charlieplex switches without ghosting.

Only c should be high here, but the current is going back over one of the LEDs and then through a closed switch on row 1, so we get ghosting.

I think that accurately describes why you can't have a switch matrix and an led matrix on the same pins, even if the diode directions are flipped.

jonbro boosted

jojo posting, violence against nuts 

I managed to not injure myself AND do some soldering last night.

Welp, I guess I'm gonna find out if I can hand solder 1mm pitch stuff. Thats 3mm on the short edge and a bit smaller than I was expecting, lol

Hobby, pain 

Hobby, pain 

Hobby, pain 


You can find these displays on eBay for 290 dollars for 40 characters worth of chips.

I want 1920 of them.

Down the rabbit hole, looking at rare oop multisegment led displays that had limited manufacture runs in the 80s

It's absurd. You can fuckin buy a gun any weekend at a gun show with basically no rules. Why would you print one? Or if you want the experience of making something, just go to home Depot and get a length of pipe.

My local library has a shitload of 3d printers, but you cant actually print anything you make on them because you might print a gun. Instead you can select from a pre approved library of skulls.

My job today is largely watching progress bars. So I am just here dreaming about working on my hobby stuff.

also, that display up on top is kinda absurd. I think I could collapse the size if I built out the support hardware myself, and just bought the bare display. Something to think about.

Show more
Friend Camp

The decentralized web is about trust. You should only join Friend Camp if you personally trust Darius Kazemi with your social media data. You probably only have that level of trust if we are IRL friends or have been internet friends for a long time. Generally speaking this is a small, closed community. In the end, Darius is the arbiter of what is allowed here. If you don't have a good idea of the kind of behavior that flies with Darius, again, you probably shouldn't join this instance. In the interest of specificity, we do have a code of conduct and privacy policy which you should read. Friend Camp features several modifications that were requested by our users. * you can log in via any subdomain, which means you can log in to multiple accounts in the same browser session (for example, log in once on friend.camp and then as another user on alt.friend.camp) * they are no longer called "toots", they are now "posts" * if you have a locked account and you get a follow request, a reminder appears under your "post" button (on normal Mastodon mobile it is otherwise buried in a sub-menu and you might not see it for a long time) * the emoji dropdown is a neutral smiley face instead of the cry-laughing smiley @mentions are rendered as "@user" for a Friend Camp user and "@user@domain" for remote users. This helps clear up when you follow two people who have the same username on different servers. * there is a "never ask me again" checkbox on the confirmation for clearing your notifications -- more info here * When an mp3 link is in a post, we also embed an inline mp3 player. git commit here * 500 characters of profile text git commit here, requested by @deerful Important Bit from the Privacy Docs: If you want decent privacy (the info doesn't leave this server), the only way to do that is to set your account to private, only accept friend requests from other friend.camp users, and only ever @ mention other friend.camp users. Once you start talking to people on other servers, all bets are off. Any private message you send to someone on another server could be looked at by the admin of a different server. This is kind of like email: if you are on a private email server, and you send an unencrypted email to a gmail account, congrats, Google now has the content of that email. But also, you do this every day, so, hey. The internet! Our beautiful icon is based on photo3idea_studio from www.flaticon.com, licensed CC 3.0 BY. It has been modified by @casey@friend.camp!