nucleative

I was recently in the Bay area and tried these e-bikes from Lyft.

When you're finished you are expected to return them to a docking zone as opposed to ditching them wherever you finish. These parking locations are all over the place and easy to find.

They get the job done and the bike is fairly pleasant to ride on flat surfaces. Hills aren't recommended. The city is bike friendly in most areas with bike lanes all over.

If you're looking to get around and the weather is good, I'd recommend giving them a try if you're in SF.

And there are lots of other sizes too, such as the huge 40135 (40mm x 135mm)

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.

This bike has a 10ah battery in the seat post and a 7 gear derailleur. Top speed is limited to 25km but I think it can be reprogrammed to remove the limit.

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.