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Ask HN: What are you working on? (March 2025)

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Re: Ask HN: What are you working on? (March 2025)

#641

Post by fauigerzigerk »

LeonM wrote: post #573
taejavu wrote: post #191

I've been putting together a no-nonsense free invoice generator, for people (like myself) that only occasionally send invoices. It's more-or-less a WYSIWYG editor, and the state is stored in the URL, so you don't have to worry about keeping track of where you stored your copy - if you've sent someone an email with the link, you've got a copy. This project was born out of the frustration of trying to generate an invoi…

Not be negative about bestfreevoice, or any other invoicing tool, but it always seems like developers and early-stage entrepreneurs don't understand invoicing. First major disconnect is that not every country uses invoices, but may use receipts instead. This is true for the USA for example, so many US devs (for example: Stripe in the early days) are not familiar with the concept of invoicing. Technically there is no…

>First major disconnect is that not every country uses invoices, but may use receipts instead. This is true for the USA for example, so many US devs (for example: Stripe in the early days) are not familiar with the concept of invoicing. Technically there is no difference between receipts and invoices, so if you're not familiar with the concept of invoicing, just read this post with /s/invoice/receipt in mind.

I find this hard to believe. An invoice is a request for payment. A receipt is proof/confirmation of payment. Invoices sometimes double as receipts (or rather the other way around) when the payment is made immediately. But how can a country not have something that represents a formal request for payment by some future time?

I don't even understand this from an accounting perspective. What would accounts receivable and accounts payable even mean without this distinction? How would you date the respective journal entries if there is no distinction?

Re: Ask HN: What are you working on? (March 2025)

#642

Post by logicchains »

Working on an embedded DSL for writing typed LLM workflows in Haskell: https://github.com/outervation/promptyped . It handles the "LLM in a loop" structuring for e.g. forcing an LLM to keep making changes in a loop until unit tests pass, and custom validation so the LLM is forced to retry a task if the validation fails (validation can include using a LLM to check the result, or plain Haskell function, or e.g. running a compiler/unit tests). It also allows structured context management, allowing the user to specify which files are initially provided as context to a task (which may itself be the result of a LLM query), as well as providing the LLM tools to open files it deems relevant, and prompting it to close the least important file when it has too many open (and compressing non-recently-modified source files when many are open).

Currently heavily WIP though and only has a working Go compile/test backend (Go seems particularly easy for smaller LLMs like o3-mini to work with due to being a relatively non-complex language).

Re: Ask HN: What are you working on? (March 2025)

#643

Post by greysteil »

aniketsaurav18 wrote: post #419
greysteil wrote: post #37

I've been building mentions.us[1] - it sends you alerts when your keywords are mentioned on Hacker News, Reddit, Bluesky, LinkedIn and a few other places. For anyone who uses F5Bot, it's similar but with some extra data sources and a Slack integration. It's been a fun project. Dealing with the scale of Reddit (~300 posts/second) creates some interesting technical challenges. It's also let me polish up my frontend dev…

your pricing is little confusing, for free you are providing 100 keywords, and for you most expensive plan you are providing also 100 keywords, in fact only diff between these two is slack notification. What's the motivation behind this pricing plan?

I put more details in a reply to another comment, but basically I think the number of people willing to pay for email alerts is small, so I’ve made the service free for them. It’s only teams who want Slack notifications who have paid plans.

I’m not optimising to extract every possible $ from the market with that pricing strategy. Instead I hope it will maximise the number of users whilst breaking even on costs.

Re: Ask HN: What are you working on? (March 2025)

#645

Post by ilovetux »

I am working on a versatile and powerful platform for ingesting, transforming, and searching through structured, unstructured, and semi-structured data. It allows for interactive searches, dashboards, alerts, and more.

We are in open Alpha at the moment, but plan on offering affordable plans while keeping the source code available. While in open Alpha and during the upcoming Beta, it is free to use for any purpose.

We will be selling Fair-Source license, meaning that the source code will be released under MIT 2 years after release.

Check it out here: https://github.com/DelveCorp/flashlight/

Feel free to ask any questions here or open an issue in the repo.

Re: Ask HN: What are you working on? (March 2025)

#646

Post by Havoc »

radeeyate wrote: post #319

Me and a friend of mine are designing a HAB (high altitude balloon) payload meant to go on Hack Club's Apex: https://apex.hackclub.com . It's designed to measure how altitude, temperature, and much more affect photosynthesis, and in turn, chlorophyll fluorescence in algae. We learned a while back that when you shine blue light on chlorophyll, it fluoresces red, and it's really quite a cool phenomena. We're designing…

That’s such a cool project!

Re: Ask HN: What are you working on? (March 2025)

#648

Post by elric »

Currently rewiring some my home's electricity so I can monitor my PV power production locally (without the shitty built in Chinese cloud garbage with hardcoded wifi passwords).

Using the Shelly Pro EM for energy monitoring (it has 2 CT clamps, one is going on the PV output, the other on the grid input).

The data will be collected in Home Assistant on a HA Green device. Additionally, we have "smart" electricity meters here, these have a port which can be used to fine grained power & gas monitoring, should be possible to integrate that into Home Assistant as well.

It's not anything particularly challenging, it's mostly refactoring my electrical distribution board to make room for the Shelly device, routing ethernet cables, and installing some power sockets and a network switch to tie everything together.

Re: Ask HN: What are you working on? (March 2025)

#650

Post by allpratik »

mmaunder wrote: post #387
changexd wrote: post #324

My pursuit of happiness, I'm in fear of quitting my current job and go for a working holiday to Australia, I'm excited while still trying to overcome the fear of not having a stable and well paying job because I don't find any joy in this job no more , so I am working on mentally getting out of this, I want to truly let go "money is more important than my happiness" idea.

I embarked on a working holiday to the UK in 1998. Quit my job in South Africa and left with nothing but a backpack. Opened up my world, I worked for Coca Cola, the BBC, an investment bank, got wrapped up in the dot com boom, met my American wife, met the smartest people in the world, some invested in me, moved to the States, started a business that now has millions of customers and a team of 40 that my wife and I 10…

This is just the right dose of motivation required for me now! Deciding to take a break and hopefully end up like this!

Thanks for this! :)

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