nucleative

Pretty sure I'm having heat creep up the Bowden tube, as it's getting jammed a few cm back from the hot end and then can't push the filament any more. When I get it out there's a little molten bulb at the filament.

In this fail, I think it jammed as usual and the extruder found a way to keep going.

I tried turning down the hot end from 215 to 200 and it's still failing. My cooling fan is running at 100%.

This is the third time I've had this print fail at about this layer, around 1 hour into what will be a 26 hour print.

Any ideas?

I'm in the process of hiring for a position and I have two candidates. It's a tough call because both are very proficient but each has some unique attributes. I thought I might ask ChatGPT's assistance with thinking it through.

I recorded myself talking through my thoughts on each one as I read through their resume and the Q&As that I've done with each. Then uploaded the audio file to the whisper-1 api for transcription (for this I'm using the OpenAI API).

Then I pasted the transcribed text into GPT4 and then prompted it with: "Above is my transcribed notes comparing two candidates for a position together. Help me think through this decision by asking me questions, one at a time."

ChatGPT proceeded to ask me really good questions, one after the other. After a while I felt like it had got me to think about many new factors and ideas. After about 22 questions I'd had enough, so I asked it to wrap up and summarize our next steps, to which it spit out a bullet-point list of what we'd concluded and, what steps we should take next.

I don't know if everyone is using ChatGPT this way, but this is a really useful feedback system.

My project is a "breathing" white 12v LED strip controlled by an esp32 on a dev board, and switched with an IFLZ44N mosfet.

In my video you can see it working but also hear the power supply complaining.

I'm using the LEDC Arduino library which allows me to select the frequency and resolution for PWM.

If I set the frequency too low the whine is extreme, but at this setting it's the best I've been able to achieve, which is about 9000Hz. Unfortunately you can still hear the sound from across the room!

It is a cheapo solid state power supply that claims it can output 12v up to 25A. I tried my desktop supply and it emits some whine too, so I don't think replacing the power will totally fix this.

Is there a technique for tuning the frequency or even just masking it somehow?

I live in a city where public transportation is overcrowded, there's constant vehicle traffic, and you can't depend on any commute time for a given day or hour. The average temperature is very high, so walking is a sweaty affair.

The only way I've found to make this city more usable is with an ebike and scooter. It's like the perfect vehicle for these conditions.

However, many people reject the technology and either choose their car or other forms of getting around.

Is it because it's not well understood, or seems too expensive?

I'm curious what sold you on the technology or what is the reason you're not making the leap.

Saw this come through from Octoprint remotely. It was an 8 hour print and died about at about the 7:15 mark.

Old habit, I opened rif and it loads current posts! What's going on?

Are you doing anything to protect yourself or your home from the risk of a fire?

Hopefully as micro-mobility takes hold, more and more cities will create spaces for parking and charging electric vehicles.

Solid state ceramic batteries may greatly advance the future of micro-mobility. They promise higher energy density and less susceptibility to thermal runaway and can be used in a wider temperature range.