Not programming per se, but I've been working on some electronics projects. If you check my profile, there's two PCB designs that I've posted. They're fairly simple, but I'm working on a larger project that I should be posting relatively soon. Currently I'm just waiting on a shipment of parts, because I didn't realize I would need XNOR gates.

comradelux@programming.dev · 1 pts · 146d (3 replies)

I see, I'm not super familiar. My extent of PCB design is a custom slimevr board for myself.

The solderable 16 byte ROM design is interesting, I could maybe see it being in some kind of debugger?

interrupt_tv@piefed.world · 2 pts · 146d (2 replies)

Oh, that's cool. I hadn't heard of slimevr before.

My use case for the diode ROM board is to take 4 binary input bits (16 possible combinations) and translate them into what segments of a 7-segment LED display should be lit or unlit, in order to display the corresponding hexadecimal digit (0-9, A-F). Like so:

Diode ROM in use

It could be used for any other case where you need to convert a 4-bit input into 16 possible 8-bit outputs. In theory you could use them in multiples for more address space, but I forgot to include an enable pin on the board to allow for that. Something to add to the next version.

comradelux@programming.dev · 1 pts · 145d (1 reply)

Maybe I'm not very experienced. Why would someone need a device to translate a 4-bit input to an 8-bit output, is it not just 0110 -> 0000 0110?

interrupt_tv@piefed.world · 1 pts · 145d

Ah, sorry, I could have been more clear there. It can do arbitrary mappings between input values and output values. So for each possible 4-bit value, you can pick a different 8-bit value to be output.

For my case, I'm working with a 7-segment LED display, like the display on a microwave. It's got 7 LEDs arranged to display a number, plus an 8th LED for a decimal point. Like this:

 ---
|   |
 ---
|   |
 ---  .

if the ROM is getting 0000 for its input, it should light up all segments of the 7-segment display except for the horizontal one in the center, to display a zero. Then for the 0001 input, it should light up the two vertical segments on the right, leaving the rest dark, to display a one. And so on. Each output bit goes to a particular segment of the display.

To relate it more directly to programming, it's like having a 16 byte array. The input gives the array index that you want to access, and the output gives whatever byte is at that index.

ghodawalaaman@programming.dev · 2 pts · 146d (22 replies)

welcome!

I am currently working on https://spaidyslabs.com/ it's a project of my friend. feel free to join or collaborate! :D

( oh and if you find any vulnerabilities which there are a lot please report it don't exploit it :) )

org@lemmy.org · 2 pts · 146d (20 replies)

Google? Hard pass.

ghodawalaaman@programming.dev · 4 pts · 145d (19 replies)

we have been trying to move away from google but don't have any other robust solution to prevent spam that's why we are stuck with Google :(

comradelux@programming.dev · 1 pts · 145d

You should implement a regular registration system, but make it invite-only until you figure out how to prevent spam.

comradelux@programming.dev · 0 pts · 145d (9 replies)

I would say to make username/password registration invite only until you figure out how to stop spammers

comradelux@programming.dev · 0 pts · 145d (8 replies)

Removed for telling them to implement invite only username/password authentication, tf??

comradelux@programming.dev · 1 pts · 145d (2 replies)

yo wtf

AdminBot@programming.dev · 1 pts · 101d

Your comment was auto-removed for profanity, an admin will review it and undelete it soon if there has been an error. Sorry for the inconvenience.

comradelux@programming.dev · 1 pts · 145d

the moderation on this is crazy

Spyro@programming.dev · 1 pts · 145d (4 replies)

pASSword - Profanity filter caught you. Sorry.

Morphit@feddit.uk · 4 pts · 145d (1 reply)

We still have the Scunthorpe problem in 2026?

Spyro@programming.dev · 3 pts · 145d

We do, the library I am using isn't the best. If you know of a good rust lib for profanity checking, feel free to share.

But we are kinda okay with it being a bit over-eager. It only applies to new accounts, and I am actively reverting the messages if its an error. Its scaling okay for now.

Just wasnt fast enough in this case.

hark@sh.itjust.works · 4 pts · 145d (1 reply)

Why is there even a profanity filter? I understand it for slurs but who cares if somebody says a swear word?

Spyro@programming.dev · 3 pts · 145d

We had a bunch of new accounts created that immediately hurled abuse at another user. It got us briefly defederated from a few instances. We are using the profanity filter to raise those kinds of post to our attention so we can deal with them rapidly.

Once we are sure the new account is behaving itself, the filter is turned off. We don't care if you swear, as long as it's in line with the code of conduct.

org@lemmy.org · 0 pts · 145d (7 replies)

The joke is that you’re doing cybersecurity, and you cannot figure out how to secure your platform without using Google to manage authentication, despite the massive amount of resources to do exactly that.

People who are serious about cybersecurity would never use Gmail. Perhaps you should stay out of cybersecurity until you know what you’re doing.

comradelux@programming.dev · 2 pts · 145d (5 replies)

You're right but you're rude

org@lemmy.org · 0 pts · 145d (4 replies)

I’m rude, but they’re dangerous—and that’s worse.

comradelux@programming.dev · 1 pts · 145d (3 replies)

They're not dangerous, you lack nuance. That's worse.

org@lemmy.org · 0 pts · 145d

You use the word “nuance,” and you simp for insecure cybersecurity products because someone was “rude.”

I’m cracking up. Please participate in their project. You will fit right in.

ghodawalaaman@programming.dev · 1 pts · 144d

could you share some resources please?

comradelux@programming.dev · 1 pts · 146d

The main page looks interesting, but I cant see much as there is only google sign in.

also I couldn't find a git repo but from the network tools it looks like next+react? I feel bad for you 🙏

AdminBot@programming.dev · 1 pts · 101d

Your post was auto-removed for profanity, an admin will review it and undelete it soon if there has been an error. Sorry for the inconvenience.

ExLisper@lemmy.curiana.net · 1 pts · 144d

Thinking about project involving programmable led strips but I have to finish my training cycle planning app first.

Jankatarch@lemmy.world · 0 pts · 145d

Messing around with the C libraries called stb.
May do some toy image-mergers etc for fun.

comradelux@programming.dev · -4 pts · 145d

Not sure if its this sub, this instance or what. but im out. bad moderation.