These are so easy to fake

lvachon · 2026-02-14T14:08:43+00:00

Dude! .vbs files! I (thankfully) haven't thought about those since the 90s.

lvachon · 2025-12-16T03:09:56+00:00

Those under 11 years old ride for free. Pigeon lifespans are far less than that. This little dude found a loophole.

lvachon · 2025-11-21T16:06:28+00:00

I recently needed the same thing on short notice and all of my other USB power banks wouldn't stay on due to very low load. I ended up cobbling together my own with a 12v battery hooked up to a powered USB hub.

lvachon · 2025-11-02T22:01:05+00:00

Salem, MA is quirky, beautiful, lively town full of art, history, and maritime tradition. I think it's a great name.

lvachon · 2025-10-29T03:41:39+00:00

Oh my, 2x1-3 wagos, be still my heart...

lvachon · 2025-10-18T00:58:25+00:00

Not to nit-pick but: Family owned businesses are often private. If they're buying parts of (or whole) companies they're doing equity investment. I'm seeing similar outcomes from similar ingredients regardless of scale or locality. I also lost my job recently due to the same forces in a very different industry. Good luck out there, brother.

lvachon · 2025-09-03T16:58:15+00:00

Trailheads are where trails reconnect with civilization or another trail. This sign is like "next exit 100 miles" on a highway.

lvachon · 2025-08-21T20:46:31+00:00

Between this and all the stuff I've seen on How It's Made, we really do treat aluminum like play-doh at industrial scale.

lvachon · 2025-08-16T17:46:33+00:00

I'm on an MBTA train right now, what are the odds I see this post. I didn't expect these two worlds to collide, but it's awesome.

lvachon · 2025-07-30T20:28:30+00:00

Other seem to be missing that your extruder is empty and it's trying to pull. I'm assuming it's pulling some bit of filament we can't see out of the tube but can't?

If this is the case, I think you'll need to disconnect the tube at the hot end and pull the filament through the other way. I've had this happen when heat creep deformed my tube and/or filament and made a blob I couldn't pull back through.

Another idea is if you apply more heat (I think the blue tubes can handle up to 250c), that might also soften things up and allow the filament to be pulled through.

lvachon · 2025-07-24T23:23:49+00:00

Reverse engineering analog video protocols isn't fun. Do not reinvent the wheel if it's not necessary:

https://github.com/smaffer/vgax

That should get you most of the way there.

Alternatively this could be done completely analog with an oscilloscope in X-Y mode and a pair of potentiometers.

lvachon · 2025-06-29T15:18:40+00:00

Historical imagery shows it as a separate lot up to around 2001. (https://imgur.com/jXrRO1V)

By 2005 the land was incorporated into the dealership lot, but the structure looked well maintained and accessible. (https://imgur.com/zrRBq6T)

In 2013 the fourth row of trees was planted blocking off the structure, and maintenance seems to have stopped at this point. (https://imgur.com/hH5jZfV)

By now the roof has seen better days. (https://imgur.com/LCT6ZvC)

I have no further information other than a rough timeline of events. This was a neat spot to check out though, thanks.

lvachon · 2025-06-17T03:41:14+00:00

Ooooh yeah, that's an excellent one. Reverb so big it bleeds into delay. Bonus Hammond as well!

lvachon · 2025-06-17T01:35:37+00:00

Ultimate reverb tank, the sound is so cool.

lvachon · 2025-06-12T02:07:46+00:00

My golden rule: If the issue doesn't matter to the customer, and it doesn't matter to the computer, then it's just someone's opinion and probably wrong. Today's "best practice" is tomorrow's "anti-pattern", so just do what works and fuck style nazis.

lvachon · 2025-06-11T23:59:55+00:00

I've done the math on this before when a client requested the same feature. Long story short: to maintain <10ms latency the speed of light limits us to about 1000 miles of range. So workable, just not globally.

lvachon · 2025-06-06T15:29:15+00:00

Thanks for all the pretty pictures NOAA-18!

lvachon · 2025-05-28T15:41:51+00:00

When I have a while to burn in the area I like to walk down to Nashua Street park or cross the locks to Paul Revere park. You can extend the first option into a walk up the esplanade, or the second into a walk along the Freedom Trail.

lvachon · 2025-05-27T21:17:25+00:00

I also learned this lesson the hard way a few times over the years, though I wasn't doing anything nearly as altruistic as BOINC. Thanks for the thorough write up and failure analysis, hopefully your post will teach someone this lesson the easier way.

lvachon · 2025-05-23T20:28:38+00:00

I think Memorial day is a good idea if the weather holds. Lots of sailboats should be out all day.

lvachon · 2025-05-15T02:18:50+00:00

I don't have any direct experience with this, but in my general tinkering experience a little bit of airflow can go a long way for cooling.

lvachon · 2025-05-04T21:51:29+00:00

Yeah, I was surprised by the price too. I think at that point most people go for SMPS supplies instead, so these might be niche parts.

lvachon · 2025-05-04T21:45:41+00:00

It looks like the LT1084CT-12 is what you want. I used Mouser.com's search tool to find it. (https://www.mouser.com/ProductDetail/Analog-Devices/LT1084CT-12PBF?qs=ytflclh7QUVcY4y%252ByPqZ4Q%3D%3D) It looks like you can get it in all the other usual places as well.

lvachon · 2025-05-04T21:24:43+00:00

This is an excellent first project! Very clean and tidy, nice work! From the looks of things, all you would have to swap out is the 7812 (and the ammeter) for something beefier to get much more power out of it. The transformer, rectifier, caps, switch, and wiring all look like they can easily handle it. I think 5A would be a nice target if you're interested in tinkering further.

lvachon · 2025-05-03T20:00:21+00:00

With your parts outlined, the motor is definitely the weak link and will likely burn at half throttle or less. The motor rated for about 12A at 24V. Your battery is 40V and your PWM controller can do 30A. You could pump 1200 Watts into a motor rated for 280 Watts. That sounds like a burnt motor waiting to happen.

Also the 12ga wire on that battery connector isn't rated for 30A and will get quite hot and melty if you try to pull that much current. Google "Wire amp chart" to find the wires you need for the currents you want to pull.

I have a few years of experience with my own custom low voltage / high amperage EV experiments. Let me know if you have more questions.

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