Tim Smith
1.9K posts
Tim Smith
@timbot
They had sent out a salesman. He’s like, “You are a moron. You’re a software guy with soft hands. You don’t know what you’re doing.”
San Diego Katılım Mart 2009
627 Takip Edilen589 Takipçiler
Every time someone gives you money for something it's evidence they wanted the something more than the money.
Justin Welsh@thejustinwelsh
Every paycheck you get is evidence that someone else figured out how to monetize your skills better than you did.
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Glad to have the button assembly all nailed down so I can move on.
All that's left is optimizing the LED diffuser!
I'll post a full assembly video soon.
Carlin@therealcarlin
Perceived quality is important right?
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@khanhthanhdev I was never able to get my d435i running in a performant way on the Pi.
I switched to the OAK-D because it has a dedicated processor on it that does the h264 RGB compression and stereo depth rectification, so the Pi CPUs can be used for everything else that's going on.
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@timbot How do you optimize for on device processing ? I just use both Rflidar C1 and realsense d435i. I use pointcloud to detect some object to support 2D lidar. Because I see CPU overhead when use depth data ?
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Trying to get some depth-based mapping going on.
Details:
- OAK-D Lite RBG-D (stereo-based depth, and unfortunately the RGB cam is not fixed focus)
- SLidar A2 lidar (only used for ground truth - see pin/purple dots)
- SLAM stack is RTABmap with a depth processing sidecar for ray-tracing-based occupancy map population
Depth >> lidar because it can see obstacles the planar lidar can't. Unfortunately it's noisy as hell.
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say hello if you love manufacturing, reindustrialization, and America
Nikita Bier@nikitabier
We're rolling out a small tweak to boost visibility of your posts to your mutuals (people who you follow back). We noticed this data was missing from the algo and it made your friends appear less in your replies. This resulted in the reply section feeling more like a battleground with people you don't recognize. This should also help clusters form around interests more easily, which many people have asked for.
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@timbot Huge fan of the OAK series, do yourself a favor and recalibrate the depth bridge by hand
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It's just a Pi on-device - the heavy lifting is done on a DGX Spark... I'll look into nvblox
I need to sync up with you on something to replace the stereo depth with. I have one of those VL53L9CX eval boards on back order, but who knows when it'll actually arrive and how easy it'll be to use.
Was thinking of getting an OAK-D Pro but I'm sure you have better/cheaper ideas!
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@RueNahcMohr @debreuil Lol gonna have to watch that, there are probably even more optimal patterns (crosshatch?)
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Apply solder mask using clear tape, which is about 2.3 mils thick. Ideally you have ~1.5 mils but there is a range. More crucially is evenness so it cures evenly. Also use a plastic sheet that allows 365–405 nm UV to pass. (cc @timbot)
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@Gragagrogog @debreuil Yeah, it's mainly an aesthetics thing, though if it's on too thick it'll take forever to cure / won't fully cure, and it'll peel off if you put the board on a hot plate.
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when you use your face to help brace and stabilize the recoil
Doc Strangelove@DocStrangelove2
Imagine trench clearing with that.
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Are you really reindustrialising if you’re not welding your own gym equipment together?
Julian Fried@JulianFried
This was good fun. Shout out to @fabworks_guy for hooking us up with the tube laser work on the uprights x.com/julianfried/st…
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@contextconor Founders these days really have no idea how things were pre-2020, especially in the dark days of 2008-2013
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if you raised on a SAFE, didn’t give up a board seat at seed, launched on hacker news, or took advice from a pg essay, you benefited from yc
people forget what venture looked like before them. convertible debt, heavy dilution, founders swapped out for professional ceos. yc dragged the whole ecosystem toward founders, and standard capital is now doing the same to the series a. that lineage runs straight back to yc
yc rejected us multiple times. i still raised on a SAFE and learned from their videos the whole time
people dunk on yc for clout but every single seed founder is raising on rails they built, yc founder or not
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@timbot One good trick is to use two pieces of scotch tape and push down with a solid piece of plastic. Scotch tape is the exact height you want your solder mask, and they make it even. Didn’t do it on this one though. Sometimes winging it is good enough too :)
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Perfect so far, thumb for scale. About 3 minutes of cutting, and a minute or two for solder paste. Side 2 has to reprobe, so about the same, plus drills and edge cuts.
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@christophersaum Software? The great founders I know are all doing physical world stuff now.
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Testing something new and a little fun.
Send us a US‑based pre‑seed software/infra founder raising their first round.
If we do the deal, you’re coming with me to F1 Austin in October – pit access.
Only founders you’re so impressed by that you’d join or angel in.
Email me the deal in the next 24h.
First small experiment toward a scout program..
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@1llegalEngineer I really want one of those military irobots but they are not cheap!!!
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Old eod defusal robot that I use to fiddle with my homemade rocket engines when I am not sure if they are save to handle
Sadly a motor went down and I had to replace them with more modern ones.
Issue is the software doesn't control it correctly
So I had to use it with a custom controller /sender to even be able use the darn thing.
When I replace the other motors it will all go with the transmitter/receiver that has all been coded with sol 5.6
Sam Altman@sama
i'd love to see interesting things people have built with 5.6 sol. i will send the person who made the coolest thing a special gift from the openai archives.
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