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darrelld commented on Ask HN: What are you working on? (July 2025)    · Posted by u/david927
darrelld · 5 months ago
Built a bespoke loyalty points system for a chain of gas stations back in 2020. Thought at first it would be a one time deliverable and then I could move on with my life. Cut to today and I'm trying to launch it into it's own platform.

Nothing much to show other than one client, but I'm on the cusp of charging them monthly vs getting paid by the hour.

darrelld commented on Honda conducts successful launch and landing of experimental reusable rocket   global.honda/en/topics/20... · Posted by u/LorenDB
3ds · 6 months ago
Here is the video which they should have put in the post:

https://global.honda/content/dam/site/global-en/topics-new/c...

darrelld · 6 months ago
I'm accustomed to seeing large plumes of chemicals coming out the other end in my minds eye when I think about rocket launches. This looks "clean" coming out the exhaust.

Why is that? Is it due to the nature of chemicals it uses?

darrelld commented on Writing an LLM from scratch, part 13 – attention heads are dumb   gilesthomas.com/2025/05/l... · Posted by u/gpjt
darrelld · 8 months ago
I'm reading through the book the blog mentions right now and building a small LLM. I'm only on chapter 2, but so far it's helped clarify a lot of things about LLMs and break it down into small steps. Highly recommend Building a large language model from scratch
darrelld commented on Ask HN: What are you working on? (February 2025)    · Posted by u/david927
darrelld · 10 months ago
Working on a loyalty points platform.

Right now it's been commissioned by one customer and is a hodgepodge of duct tape and glue.

Trying to slowly refactor functions so I can truly make a platform and onboard new customers.

darrelld commented on Notes on Guyana   mattlakeman.org/2024/11/0... · Posted by u/impish9208
sdlkj- · a year ago
Being Guyanese in tech is an interesting experience. FWIW I have yet to meet another Guyanese person at work. In every workplace I go to the experience is similar - initially the south asian folks approach me, but then once they realize we're not that culturally similar I end up in a sort of limbo. Not to say that folks aren't welcoming, but every large company ends up having sort of cultural cliques, and I never seem to fit into any of them.

Curious if there are any other Guyanese folks out there who're willing to share their experience.

darrelld · a year ago
Born Guyanese, but only lived there until I was 3, then we moved to St. Lucia. Have lots of memories from visiting over summers and Christmas multiple times when I was a kid.

Mostly consider myself Lucian and I feel like I've assimilated into the American tech population. My history now is just a interesting fun fact. Don't meet too many people from the Caribbean in general in tech circles, so it's always fun to get a reminder that they're out there.

darrelld commented on Busy Status Bar   busy.bar/?hn... · Posted by u/aleksi
darrelld · a year ago
This is cool, I've thought of building something like this for years now.

The price is a bit high, but glad to see it in the real world.

darrelld commented on Ask HN: Who's building an AI-free product?    · Posted by u/leonagano
darrelld · a year ago
I'm building a loyalty points platform.

Started off as a one off solution for a single client, but then I realized that I could generalize it.

The one off solution is running for my client for the last year, but the generalized API is still just a docker container on my PC.

I've been starting to write about the dev process[1]

[1]https://darrelld.com/signal/21/

darrelld commented on Ask HN: Why Is Stack Overflow Fading Away?    · Posted by u/cryptography
darrelld · a year ago
AI is definitely a big part of it. When I would search Google with a technical question and land on StackOverflow I was looking for an answer. Sometimes you get a post which is similar, but not quite right, or the answers are only 95% of answering your actual questions.

AI of course just answers it. I can ask it follow ups, I can give it loose code and it just gets it. My grammar can be riddled with spelling errors and it still gets it. I can go back and forth with it and get a fine tuned answer.

When I used SO I had always just wanted an answer, but had to accept answers that were close, but not quite what I needed.

God forbid if I needed to post a question. I'd immediately get hit with over moderation, or someone closing the question for whatever reason.

I used to be an avid SO contributor up until around ~2015. I saw the mod community turn snarky. AI is just a better way to get stuff done.

darrelld commented on Ask HN: What are you working on (August 2024)?    · Posted by u/david927
CrispinPowers · a year ago
Interesting. Can you share more?
darrelld · a year ago
yeah check out this other reply thread:

https://news.ycombinator.com/item?id=41353838

darrelld commented on Ask HN: What are you working on (August 2024)?    · Posted by u/david927
wyclif · a year ago
I'd really like to hear more about how this works and how you got it off the ground.
darrelld · a year ago
Broad strokes:

I went to school with the son of the owner. For about 3 years off and on he'd been asking me about building apps, where he could find good devs, what price to pay.

I'd sent him some info, but never got too involved. Then the pandemic hit, and I found myself with a bit more time to kill, so I listened more to what they needed.

They basically wanted to get a loyalty program going at their gas stations and partner gas stations, but wanted custom rules which their current provider couldn't do with their off the shelf solution.

They also wanted to use one of those old school CC machines that were everywhere before the likes of square showed up. But getting your hands on those units is expensieve.

So I started planning it out. They needed to store customer data, and needed a point of sale device to swipe customer loyalty cards on, which needed to read in customer info, do a deduction, or a store credit top up and print a receipt.

I found a android terminal machine off alibaba, opened up android studio and started hacking away. I hadn't done more than a basic android hello world at this point.

For the backend I used django to get started quickly, and they were very happy to use the django built in admin panel to do stuff as needed, and view transactions.

After I got the devices talking to django, I had to integrate a loyalty vendor they already sourced, and just went along with it, but that was a mistake. The vendor points API doesn't really add much value on what django can already do for me, and my new goal is to become that vendor since I think I can do their product better.

But basically I iterated on it for about a year, launched a little over a year ago, still working out some edge cases and kinks, but they do roughly 25K transactions a month on devices spread out at over 20 stores.

They want to bring it to new islands, so I'm trying to remove some of my duct tape fixes with more stable fixes so that can be smooth sailing come next year.

EDIT: Might get back to writing and update with a much longer post. Draft:

https://darrelld.com/signal/21/

u/darrelld

KarmaCake day576March 5, 2013
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I solve problems and take pictures

https://darrelld.com

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