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| # | Post Title | Result Info | Date | User | Forum |
| RE: Adding Bottom Cover to Deter Cats, Toddlers from Investigating Wiring? | 5 Relevance | 7 years ago | mariechang | Table Customization | |
| Bruce, Can we have an update for the problem? Any time soon? Any plan in Effect? | |||||
| RE: Sand level low in middle? | 5 Relevance | 8 years ago | Bruce | Table Usage | |
| @heropup- Trying other shaped "boulders" is fine, but be sure they don't have sharp edges, which could scratch the "sand pan". I've tried a few things, but nothing comes anywhere close to a sphere aesthetically (IMO). I sometimes use a BB when I WAnt to draw something that needs detailed lines (like text) and I WAnt a photo of the completed track. But because of the relative increase in size of the particles (compared to the ball), the smaller the ball the less smoothly it rolls. Another interesting possibility is to change the shape of the object pushing ... | |||||
| RE: Questions | 5 Relevance | 8 years ago | Bruce | Table Usage | |
| Agreed - the biggest factor concerning noise level is playback speed. At the slower end the only sound detectable is that of the ball "crunching" the sand. Perhaps not the best description, but it's fairly soft, and has kind of a soothing Effect. While I agree that in a quiet room I can hear it - I find it pleasant. (But I'm a bit biased :). | |||||
| RE: Mini surging/accelerating | 5 Relevance | 6 years ago | Bruce | Table Usage | |
| Hi @mikewand14 - Glad to hear you and your family are enjoying it! I can see the periodic acceleration / deceleration in your video - but this is within what I consider "normal" Sisyphus function. There are several reasons for ball velocity to vary during track play. The primary one is that the robotic mechanism that moves the magnet(s) has mass, and therefore, the motion control software is designed to slow down before a corner so it doesn't make a knocking sound (the sharper the corner the more the decel). That is why you see it happen on the track in your video repeatedly. I wrote this code, and it isn't perfect - when the ball is moving mostly in the rotational axis (Theta), and followed by a mostly in/out linear more (Rho), it doesn't always match the velocities perfectly. This will get tweaked in the future, and may help it look better to you. Lastly, you will notice that the ball "stutters" (wobbles) a bit at times. This is because the sand grains are not negligible in size compared to the ball, and they perturb it. This, plus the inherent flexibility of the magnetic coupling, lends itself to the ball's velocity "bouncing" a bit at certain speeds and sand depths. Hopefully, the velocity variation you're seeing doesn't spoil the Effect. | |||||
| RE: Sisyphus Table Text Generator - need comments please | 5 Relevance | 7 years ago | crsolomon | Community Tracks | |
| I am going to attach 2 versions of the source code. version 1 just writes 3 lines of text you input. This is the Beta. version 2 does the same but writes the 2nd line backward (since the ball is on the right side at the end of the first. It's not the "preferred" version since writing the characters backward sometimes makes them less readable, but if the Effect (which is cool) is liked, I could rework the alphabet data set). Version 1 and 2 differ in a goto statement is either on or off to control motion Please note that the abc.txt file needs to be in the same directory as your program to make this work. Output file is written to same directory too. Attachment : Sisyphus-Text-Gen-v1.sb Attachment : Sisyphus-Tex-Gen-write-2nd-line-backwards.sb | |||||
| Wood Base Table Update Alert | 5 Relevance | 7 years ago | MicahR | Beta releases and bugs | |
| ... the update will complete and the table will reboot. As soon the ball begins to move UNPLUG your table. WAit 30 seconds and plug the table back. You can now operate the table as desired. What may happen if you do not power-cycle your table after the update - The ball will fail to return to the center and begin operating in the wrong position. This is likely to result in one of the scenarios below: The motors will fault, showing a notification that there WAs a hardware failure. If this does happen, you do not need to worry about damage to your table. Just ... | |||||
| RE: 1.10.13 update problem | 5 Relevance | 7 years ago | MicahR | Beta releases and bugs | |
| ... table owners. What caused this - we pushed a functional change to the operation of these tables that is intended to increase home (center) precision. This new change by itself causes the table to not home correctly in the event it resets without power-cycling the table. This happens during factory resets, name change, and updates. To avoid this issue we added another functional change that returns the ball to home before a factory reset, name change and update. Since we added the changes simultaneously, the fix (home before update) WAs in place too late t ... | |||||
| RE: Sand level low in middle? | 5 Relevance | 8 years ago | heropup | Table Usage | |
| There's only so much detail that can be drawn for a particular grain size of sand. Since all tables regardless of diameter use the same sand, and the paths are scaled to fit a table's drawing field, the larger the table, the more apparent detail can be seen in a track as a whole. In the center of some tracks, the details get finer and finer until the sand is too coarse to resolve them. If you were to take a picture of, say, the central 2 inches of the track drawn, it would show roughly the same amount of detail for the same ball size and amount of sand, regardless of the size of the table. But the features are proportionally larger for a larger table (e.g., the spacing between overlapping paths). For instance, if I take a picture of seash5 drawn on my 22" end table, and I take a picture of the same track drawn on the 36" coffee table, such that the entire design just fits inside the frame of the photo, then when comparing the two images, the latter will appear to have finer sand and finer details; but if I take both pictures from the same distance from the glass, the sand will have the same apparent size and the same detail, but the path on the larger table will be magnified compared to the smaller table. Unless there isn't enough sand to draw a path, if you add more sand to the center, what will happen is that the ball will just push it around and leave virtually the same amount of sand behind. If you use a smaller ball, you'll see a little more detail since the ball won't flatten the sand as much (it draws a narrower path with less overlap). I would encourage experimenting with different ball sizes and amounts of sand. Another interesting possibility is to change the shape of the object pushing the sand--a cylinder, for example (like a hockey puck) might create a different Effect than a ball. | |||||
| RE: Adding colored LEDs | 5 Relevance | 8 years ago | dithermaster | Table Customization | |
| Bruce, the same RGB+W strips are available for far less than LIFX charges and can and should be driven directly from the rPi (using a separate app is clumsy). I do LED projects all the time (typically using Arduino) and would be happy to collaborate if you WAnted. In addition to fixed and based-on-rho-theta stock lighting modes and Effects, I'd like to see certain tracks be able to take over the lighting for artistic Effect. My resume: My RGB holiday wreath: RGB+W aquarium lights: P.S. Since rPi is on home network, it also could have some home cont ... | |||||
| RE: Adding colored LEDs | 5 Relevance | 8 years ago | jessicarunnels | Table Customization | |
| I did flip it upside-down! I just assumed that since you had put them at the top, that WAs the right place for the to be to get the best contrast. 🙂 I could theoretically run them both, but I ended up leaving the original lights unplugged for three reasons: 1) The lifx z has the ability to do any white that I WAnt, so there WAsn't really a good need for the original strip, 2) you can see the strip clearly if you are low (i.e. laying on the couch, so I thought that might be distracting, and 3) I would have had to have made my hole even a tiny bit bigger to g ... | |||||
| RE: Firmware version 1.5.4 | 5 Relevance | 8 years ago | Bruce | Beta releases and bugs | |
| ... support) shouldn't (we hope) cause any bad Effects on the metal tables' functioning. But one thing you can see is a major change in homing. On boot up all tables do a "sensored home", moving each axis slowly toward a sensor (theta first then rho second) - which is unchanged. From then on the table "knows" where home is. Now, whenever you manually choose a different playlist or single track to play, it homes by "dead-reckoning" - moving both axes simultaneously, directly home (no need to "feel" its WAy). The practical Effect is that, when you choose differ ... | |||||
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