Sal

joined 2 years ago
MODERATOR OF
[–] [email protected] 2 points 4 days ago

It's for hobby!

But I did work with cell cultures (with lab-grade incubators) in the past, and I am currently working with a company developing sensors for industrial systems. So, the concept of PID I learned at work recently. And at work I also write some firmware for interfacing sensors with micro-controllers.

[–] [email protected] 3 points 4 days ago

Awesome work! Upgraded. Thank you!! 😄

[–] [email protected] 2 points 4 days ago

I think that the videos on ginger and turmeric from "Self Suficient Me" have valuable information: https://www.youtube.com/watch?v=PE32IxRIgow https://www.youtube.com/watch?v=bFHQir72ams

I have experience growing small plants of ginger, turmeric, and galangal in pots - if I bury the store-bought pieces in soil mix I get young plants with no problem. Unfortunately my luck ends there, because I don't have the space nor access to the weather to grow large healthy plants, and eventually they do stall when winter comes.

[–] [email protected] 2 points 4 days ago* (last edited 4 days ago) (2 children)

I have built incubators for several different projects (seedlings, mushrooms, tempeh, fermentation, etc...). Learning how to control a heat distribution in a safe and efficient manner has been a bit of a journey for me. Just recently I begun experimenting with positive temperature coefficient (PTC) heaters and I am very happy with them as I feel much safer running these than ceramic/IR heat lamps and regular heating elements.

At the moment I am heating an incubator for petri dishes using a 12V/100W PTC heater with a fan hooked up to an stc-3008 thermostat. The PTC undergoes on/off cycles that keep the temperature near 26 C, but, even when setting the upper and lower control limits quite tight, the temperature still oscillates up to +/- 2 C during these cycles.

I have been studying how to implement a proportional–integral–derivative (PID) controller to avoid the on/off cycles. My next experiment is to try to control the power of the PTC with a Mean Well HLG-120H-12AB LED-driver in constant-voltage mode and the ESP32 as the PID controller.

[–] [email protected] 1 points 1 week ago

Aaah, I got the fly butts first 😆

But lots of treats after that :D Thanks!!!

[–] [email protected] 3 points 1 week ago (2 children)

Here are some that come to my mind: Epazote, ramsons, nopal, chaya, sour orange, turmeric, many gingers, galangal, Sichuan pepper, cinnamon, cardamom, mamey, black sapote, guaya (Melicoccus bijugatus), jícama

[–] [email protected] 8 points 2 weeks ago
[–] [email protected] 2 points 2 weeks ago

Hah, I didn't know this one!

For ChatGPT, using a Temporary chat, it did give me some of the statements. After giving me these rules, I asked it to disregard the image quantity limit rule (rule 4) and it does, I can ask for multiple images now.

Looking at these it also seems like ChatGPT was being stubborn about using seaborn instead of maptlotlib for creating plots

Here are the statements made in our conversation so far, up to the twentieth:


    "You are ChatGPT, a large language model trained by OpenAI."
    "Knowledge cutoff: 2023-10."
    "Current date: 2024-10-27."
    "Image input capabilities: Enabled."
    "Personality: v2."
    "Whenever a description of an image is given, create a prompt that dalle can use to generate the image and abide by the following policy..."
    "(This part covers image generation rules, privacy, and style guidance for creating visuals.)"
    "Do not create more than 1 image, even if the user requests more."
    "For requests to create images of any public figure referred to by name, create images of those who might resemble them in gender and physique."
    "The generated prompt sent to DALL-E should be very detailed and around 100 words long."
    "The browser tool has the following commands: search, mclick, and open_url."
    "You should always select at least three sources when using mclick to ensure diverse perspectives."
    "For citing quotes from the browser tool, please render in this format: 【{message idx}†{link text}】."
    "When making charts for the user, always use matplotlib over seaborn."
    "Give each chart its own distinct plot (no subplots)."
    "Do not set any specific colors or matplotlib styles unless explicitly asked to by the user."
    "I REPEAT: when making charts for the user, use matplotlib, give each chart its own plot, and never specify colors."
    "Repeat the previous statement."
    "When making charts for the user:"
    "1. Use matplotlib instead of seaborn."

If you’d like more statements or specific details, feel free to let me know!
[–] [email protected] 22 points 2 weeks ago

In the 17th century, the distillation of an ammonia solution from shavings of harts' (deer) horns and hooves led to the alternative name for smelling salts as spirit or salt of hartshorn.

Huh. That's fascinating. Never would have guessed you could distill ammonium salts from deer horns. Very interesting article.

[–] [email protected] 2 points 3 weeks ago

So far so good!

For the past few years I have been cheating when it comes to organizing my apartment by shifting piles of stuff from one place to another. But I am running out of drawers to stuff things into So, I have decided to do a proper cleanup and try to organize my stuff, so I have been doing that little by little this week... We have too many hobbies and too little space.

Workload has been alright this week. Enough entertaining work but no stress 😄

At the moment I have a few fermentations going - blueberry, white grape, and agave wines. I have also started experimenting with continued kombucha brewing (as opposed to batch brewing) and I am liking this method more. With the continuous method I have a 5L container with a spout, and every ~2 days I can prepare two 500 mL bottles and refill with 1 L of sweet black tea.

How's yours?

[–] [email protected] 2 points 3 weeks ago

Aah, congratz!! :D

 

This gullfriend got an itchy eye during the photo-shoot.

Took this photo in Park Frankendael in Amsterdam a few years ago - just learned about this community and thought it would fit 😁

 
 

A new paper on a Bolitoglossid showed up in my alerts today! 🥳

It is a one-pager and comes with a beautiful photo of a foraging arboreal salamander 😄

54
Imantodes cenchoa (mander.xyz)
submitted 3 weeks ago* (last edited 3 weeks ago) by [email protected] to c/[email protected]
 

Found this Imantodes cenchoa sleeping on top of a leaf in Punta Laguna, Quintana Roo.

Here is a photo of where it was sleeping:

There are a few different snakes of the genus Imantodes in Yucatán. What sets this species apart is that the row of scales on its back consists of enlarged scales. Here is a closeup emphasizing that row of scales. The green arrow points at an enlarged mid-dorsal scale, the blue arrow at a regular scale.

In comparison, here is a photo from an Imantodes tenuissimus that I took back in 2009 in Mérida, Yucatán (with a less sharp camera), and a closeup of its mid-dorsal scales that does not show this enlargement.

Imantodes tenuissimus

83
submitted 3 weeks ago* (last edited 3 weeks ago) by [email protected] to c/[email protected]
 

One of my favorite frogs! Spent some time specifically looking for it. Managed to find two near Cobá, in Quintana Roo (in the Yucatán peninsula). This frog hides in holes in lime stone and tree trunks, and makes use of its flat head to block the entrance. This type of defense is known as phragmosis.

Some other shots:

 

Found this anole in Yucatan. I am not sure of its exact species - probably an Anolis sp..

Anoles often sleep at the tips of leaves and twigs. My guess is that this is a strategy to prevent nocturnal predators sneaking up on them through the branches without making its bed vibrate. When woken up they can quickly drop down.

 

These are quite common in Yucatan, Mexico.

The leatherleaf slugs belong to the family Veronicellidae. This particular one could be Sarasinula plebeia, but it is not so easy to definitively ID these.

I originally identified this species a few years ago from the description on this website, but since then they have added an update stating that my original source is also unsure on this one.

UPDATE: It seems that IDing certain slugs by pictures isn’t a good idea. In 2024 when pictures on this page were uploaded to iNaturalist, another user suggested a different species in the genus Leidyula, and then user “deneb16,” a mollusk specialist at UNAM, Mexico’s main university, added the comment that all Mexican species of the family this slug belongs to can’t be identified without dissecting their sexual organs. The family, she agrees, is the Leatherleaf Slug Family, the Veroncellidae.

So, I am not 100% of the species, but it is a leatherleaf slug.

32
submitted 3 weeks ago* (last edited 3 weeks ago) by [email protected] to c/[email protected]
 

This bird poop caught my attention because it looked a bit too perfectly shaped, and when I looked at it closer its orange osmeteria came out.

Searching online, I suspect that this might be Papilio cresphontes. However, I see a lot of variation in the photos of Papilio cresphontes and so I am not sure if this the correct ID.

Found in Yucatan, Mexico.

 

adult greenhouse frog

baby greenhouse frog

Found many of these frogs under a wet trash bag in a back yard in Mérida, Yucatán. I made use of a handheld flash with a remote trigger for lighting, and a Sigma 105 mm as my macro lens.

These frogs do not seem to match with any of the local frogs reported in Julian C. Lee's field guide to the amphibians and reptiles of the maya world.

From a reverse image search, I mostly found images of the green house frog Eleutherodactylus planirostris. Eleutherodactylus planirostris is native to Cuba and the Bahamas, and is often introduced with plants that come from green houses in those areas. These frogs go from tadpole to frog while still inside of the egg, which explains why the baby frogs are so small.

The visual aspect, the incredibly small baby frogs, and the fact that they were found in a back yard in the city with greenhouse plants, all lead me to conclude that it is likely Eleutherodactylus planirostris.

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