▲ 3 r/DMT
Why can't I remember?
Anyone else have an impossible time remembering anything from DMT trips? I rarely remember much of anything. It's like waking from a dream, it fades right away.
u/jhyland87 — 1 day ago
▲ 2 r/chemistry
Is this condenser design flawed? Or am I flawed?
I ordered a new short path distillation head from a supplier off of E-Bay (who I have removed the name/logo of because I'm not trying to make them look bad, I like them as a supplier).
The condenser is somewhat like a Dimroth condenser in that it has a cooled inner coil as well as an outer jacket. But I notice when I add coolant into the bottom port, the outer jacket never fills up because there's no way for the outer jacket to flow into the top outlet port. Reversing the coolant flow direction doesn't really help much either. In both cases, the outer jacket only gets about half full and the water stays stagnant, which means it gets heated up by the vapors and eventually reaches about the same temperature.
I relayed this to them suggesting maybe it was a design flat. Because it would seem to be that the port on the right (in the above photo) should be to the left of the other port, and the coolant would then go into the port directly connected to the inner coil, then out to the jacket, fill the jacket up, and then out the other port (much like an actual Dimroth).
They were skeptical of this, so I provided two videos. They suggested it was an issue with the condenser and insisted on sending me another one. I asked them to test the flow before sending it to make sure it was actually circulating in the outer jacket, and they tested it and said it was working fine.
But it's not any different than the one I have, same issue.
Question is - Am I just an idiot that can't work this condenser? Or is this a legitimate design flaw?
Edit: Forgot to attach the chat:
u/jhyland87 — 17 days ago
How do you track your analytics?
I created a chrome extension and I can see the typical analytics that come with it, but I wanted to track custom events like `search_query`, `exception`, etc. But its saying I don't have administrator or editor permission for the analytics account.
I was hoping to keep track of all the analytics under one dashboard, but its not looking like I can do much with it.
How do you guys handle it?
u/jhyland87 — 19 days ago
▲ 1 r/userscripts
Maximize E-bay conversation, export as PDF or PNG image
Collect a full eBay message thread into a clean full-screen overlay for screenshotting, printing, or exporting as one continuous image. Never modifies the live eBay UI.
Script in gist
u/jhyland87 — 24 days ago
ChemPal — trying to make chemical/reagent shopping easier for hobbyists
I do a decent amount of hobby chemistry and small-scale lab stuff, and one thing that's always driven me up the wall is how scattered the supplier landscape is. If I want one specific reagent, I'll end up checking a dozen different storefronts, and every single one is a different site with its own quirks. There's no unified way to search across them or actually compare what you're getting for the price.
I know you're thinking "Just use Google" - Some of these sites have crappy SEO, and for whatever reason a lot of them just don't get listed when searching Google Shopping, possibly because they're restricted or because the websites just don't allow it.
The original idea actually came from a fellow ScienceMadness member, and it stuck with me enough that I started building ChemPal — basically a scraper + normalizer that pulls product data from a bunch of chemical suppliers into one place you can search.
I initially thought it would be a lot easier than it ended up being. The first version was a Python script that ran via CLI, the current version is a Chrome extension.
The problem is every storefront is a different beast. Some run on Shopify, some Magento, some Wix, some WooCommerce or ePages. So instead of writing "a scraper" I've had to reverse-engineer each platform individually:
- Wix stores have a hidden GraphQL endpoint you can poke at to get filtered product lists, but the chemical data itself (CAS numbers, SDS links) is stuffed inside an HTML blob you have to parse back out.
- Shopify's metafields don't expose the stuff I actually care about, so I fall back to scraping the product page HTML for the MSDS/COA docs.
- Magento's GraphQL will happily crash its own resolver if you introspect it wrong.
Then there's the data itself, which is gloriously inconsistent. CAS numbers, SMILES strings, and molecular formulas are usually just... buried in free-text descriptions. So there's a whole pile of regex to pull those out — the formula matcher alone has to handle Unicode subscripts and about 78 edge cases I've run into so far. And every store lists quantities differently (250g, 0.25 kg, 250 mL), so it all has to get normalized to a common unit before you can compare anything.
It's very much still a work in progress and honestly kind of a rabbit hole, but a fun one. Each new supplier ends up being its own little puzzle.
Here are the relevant links:
P.S. Full disclosure, I definitely used Claude to help with this. The first ~50% was done without AI, but once I saw how quickly Claude could help with certain issues, I used it to help with the rest. But it was still quite a bit of work on my part due to how complicated the supplier interface is.
u/jhyland87 — 1 month ago
Created a Chrome extension that helps find reagents - for hobbyists
As a hobbyist, it can be difficult to source reagents from suppliers that actually ship to residences. The ones that do don't always show up in search engine results for a number of reasons (crappy SEO, captchas, blocking scrapers, etc).
We (other dev and I) created a Chrome extension that basically searches through a list of providers that do ship to residential addresses. It started out as a ScienceMadness thread and I just got a little carried away with it.
It's still in Beta right now, so you have to download the packed (or unpacked) extension and install it manually, but I thought I'd share it for anyone that wanted to check it out.
Currently it searches through a list of 25 suppliers. It's completely open source, and I'm open to adding any suppliers you may recommend.
- Repo: https://github.com/jhyland87/chem-pal
- Documentation: https://jhyland87.github.io/chem-pal/
- Wiki: https://github.com/jhyland87/chem-pal/wiki
- Download: https://github.com/jhyland87/chem-pal/releases/latest (zip = unpacked, crx = packed)
There are probably plenty of bugs, so don't expect perfection, but I think it's at a pretty good spot right now.
P.S. Im getting an alert that this may be "self promoting". This is 100% free and I make nothing from it (no ads, etc). And I think this could be pretty useful to hobbyists. So hopefully it doesn't get scrubbed.
Edit: Added links to wiki and documentation.
u/jhyland87 — 2 months ago
Created a userscript to add an Amazon wishlist search feature
Hello. Created a simple wishlist search userscript for the Amazon UI. It's a TS rewrite from a vanilla JS version I wrote (I had AI help with the TS rewrite).
- Repo: https://github.com/jhyland87/userscript-amazon-wishlist-search
- Install/Update URL: https://github.com/jhyland87/userscript-amazon-wishlist-search/releases/latest/download/amazon-wishlist-search.user.js
- Original: https://gist.github.com/jhyland87/fc613d51837f94cb049b76fab3474ba2#file-amazon-js
Attaching a gif of the demo.
Let me know if you have any issues with it.
u/jhyland87 — 2 months ago