Philo
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Posts posted by Philo
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On 9/6/2020 at 8:25 PM, Equilibrium said:It was problematic and took a lot longer than expected due to inaccurate LDraw models.
Could you report what you found wrong? Might be intetesting to fix LDraw models
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What about creating A3 size pages, with actual BI stuff in an A4 sized middle (using a background with proper size frame might help), generate images than crop them to A4 size? I think I used a similar trick to create EV3 instructions for LEGO app that required a weird image format.
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LDCad is THE tool for me (especially for Technic models). Rock solid, handles big models with ease while remaining pretty fast. And as mentionned by @supertruper1988 it contains tools and provides measuring tools that make your life easier (eg. the triangle closure calculator!)
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8 hours ago, SNIPE said:Here's some tricks you can do with part 32249 to get advanced connections or for other things:
Interesting... exact fit, not too tight. But the beam is not exactly on grid, this: https://photos.app.goo.gl/mHm9cGwz4y2BtZ8k7 is a forced fit.
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6 minutes ago, Void_S said:so missed this moment but it looks really weird to see this "barely-legal" connection in such expensive sets.
OTOH even old (and very old) 24t gears don't rub against beam in this situation (even with some torque)...
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On 7/10/2020 at 11:37 PM, dr_spock said:Absolute max voltage for the LB1836M motor driver in the V1 PF IR receiver is 10.8V and allowable operating voltage is 9V at 25 deg. C. DRV8333 driver in the V2 PF IR receiver has 10.8V for operating in the spec sheet. Do the Power UP hubs also use the LB1836M motor driver?
Yes they do use the trusty but voltage limited LB1836M chip. So going above 10.5V means taking risks!
Screenshots from the datasheet:
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9 minutes ago, astyanax said:On the other hand, I almost tear off my skin during disassembly...
Yes, connexion is... sturdy! something I consider to be a good thing, just hope the new version is not too relaxed. I use a large rubber band to pull them to avoid (mostly!) sore fingers...
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14 minutes ago, BrickTronic said:I think, the main difference is, that Data at Philos Page was recorded RXD & TXD Lines between Hub and Motor/Sensor by Logic-Analyser.
Another possible difference: I recorded the initialization sequence during hub power up without any BT sync with smart device. Any setup done on app initiative was thus not done.
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17 hours ago, Mr Hobbles said:I'm not sure which hub @Philo did his testing on
As far as I remember, that was City hub...
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1 minute ago, Lok24 said:Which can only be loaded within the hub, which means that your robot stands still for 2 hours while loading....
The EV 3 reachargeblabe battery could be loaded outside.
Yes, this is a drawback for conventions. OTOH, if you use the USB cable, the hub recharges during the time you spend programming it. My Spike Prime tends to be always fully charged...
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A few positive points compared to EV3, not yet mentioned:
- Small size
- Light weight
- Built in rechargeable battery
- Screen is coarse, OK, but large and visible from a distance (try that with EV3!)
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@Didumos69
You'll probably find this funny
Granted, the color sensor kills ground clearance, and obsctacle clearing capability is not stressed... -
35 minutes ago, LegoIstanbul1907 said:You have wrote about the 2 speed gear box with another motor ? Is it possible to do this. (everything is possible ofcourse with you and experienced other friends)
Hi @LegoIstanbul1907,
Sorry, I haven't got further on this (actually I'm not such a great builder
)
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4 minutes ago, ibessonov said:Wow, how damaging is it for the tire? Does it become loose on the old rim?
No problem, rubber is very flexible. I didn't have to pull on it so no fear it becomes loose on intended rim.
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42007 and 42063 BMW are the same tyres, and they do fit easily on large Spike Prime wheels.
But actually the wheel is a bit too small to really fit inside of tyre...
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I know I am (very) late to the party, but...
A few years ago, the AA Power Functions battery packs was replaced with a new model.
The old model (58119, top) had a weak, yellowish green LED, while the newer one (16511, bottom) has a brighter pure green LED.
After opening, you see that the PCB seems to miss the protection device, a resettable fuse (rectangle marked HL5L). This conducted several people to think that the protection, which cuts power at a current above 750mA, had been removed, and that the new battery pack was more suited for high power models.
But if you look at the bottom of the battery pack, you see that there is a wired protection, inserted in a hole of the case.
...and the rating of this resettable fuse is just the same as previous one, 750mA. So no luck with power-hog models! Note that the different technology might slightly impact the behaviour (more or less thermal dissipation/conduction).
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4 hours ago, Ankoku said:Rather nice:
Thanks ;)
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This table top Small Ball Contraption was built for FreeLUG Spring 2020 on-line contest, whose theme was "Perpetual Motion". This is a small scale version of a Great Ball Contraption loop, fit on top of a 32x32 baseplate. I tried to keep the modular structure, with a specific color scheme for each module.
More details and LDraw file available on Rebrickable: https://rebrickable.com/mocs/MOC-41488/Philoo/table-top-small-ball-contraption/
A must-build for all GBC fans
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11 hours ago, SylvainLS said:Ok, done, new version (I only changed the html).
Thanks! I also increased smallcanvas size to 128x128 to get a better direct preview of the result...
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57 minutes ago, SylvainLS said:So, here’s a simple web page to convert a triangle file (text file, one triangle per line, 9 space-separated coordinates per triangle) into a heightfield PNG usable in ldraw_landscape.
What's the best way to restart the voxelizer after changing parameters? so far it seems I need to change input file (to a different one!)
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11 hours ago, SylvainLS said:I haven’t found anyone using a similar method out there, why?
Let's face it, maybe you're a genius ;) More seriously you are is a favorable case as you are sure there is only one sheet in vertical direction, that helps...
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2 minutes ago, SylvainLS said:I don’t think I will do that in Javascript though, it’s impossible to read the recursive .dat files and stay simple/portable.
Or you could accept only "flattened" .dat files? There are tools to do that.
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Excellent, thanks you both for sharing!
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Server is mostly back on now. There may still be some glitches here and there...
2020 Mindstorms set
in LEGO Technic, Mindstorms, Model Team and Scale Modeling
Posted
Yes: https://docs.pybricks.com/en/latest/hubs.html#prime-hub-spike (not yet tested here yet!)