Videos uploaded by user “TECHNICally Possible”
Daft Lego - Harder Better Faster Stronger
A perspective based lyric video made using Lego. Shot with a GoPro controlled by Mindstorms
Views: 516470 TECHNICally Possible
Little Talks Guitar Cover by Lego Mindstorms EV3
It's Lego, and it's playing guitar :)
Views: 18850900 TECHNICally Possible
Lego Anamorphic Clock Kinetic Sculpture
Lego Anamorphic Clock Kinetic Sculpture An example of anamorphosis is where a distorted image is drawn on paper and looks 3D when viewed from a certain angle. More generally, anamorphic art requires the viewer to use a specific vantage point to reconstitute and properly view an image or sculpture. A kinetic sculpture relies on movement to achieve a desired visual effect. I’ve combined both of these ideas to create a mechanical timepiece using Lego. Uses a minimalistic frame and 147 gears driven from a single motor. Every two seconds, 6 hands are used to represent time on an analogue clock face. 2 hands for hours (the shortest hands when viewed correctly), 2 hands for minutes (longer grey tipped hands) and 2 hands for seconds (longest red tipped hands). They pause for a brief moment in the correct spot to indicate the current time, then scramble and pause again 2 seconds later in the correct position to show the updated time. An abridged version of how it works is explained in the video, but in more detail, to achieve this visual effect: Every 2 seconds, the clockwise second hand has to travel 1 + 1/30th of a turn to pause in the next correct spot around the clock face The anticlockwise second hand must travel 29/30ths of a turn to pause in that same spot In one minute, the time is shown 30 times Do the math and the clockwise hand turns at 31rpm (1 1/30 x 30) and the anticlockwise hand turns at 29rpm (29/30 x 30) Both differential casings that the hands revolve around turn once clockwise to ensure the hands extend and pause in the correct spot We can apply similar math to calculate the rotation of the minute hands The minute hand on a normal clock takes one hour to do one rotation of the clock face This machine will represent the time 1800 times in one hour Therefore the minute hands will need to turn at 1801 turns per hour clockwise and 1799 turns per hour anticlockwise (1 1/1800th turns clockwise and 1799/1800ths of a turn anticlockwise every two seconds) The differential casings that cause the hands to peak in a certain spot will turn once per hour clockwise (1/1800th of a turn every two seconds) Similar math applies to the hour hand - 21601 turns clockwise and 21599 turns anticlockwise per 12 hours (1 1/21600th turns clockwise and 21599/21600ths of a turn anticlockwise every two seconds) The differential casings that cause the hands to peak in a certain spot will turn once per 12 hours clockwise (1/21600ths of a turn every two seconds) On paper, with a motor speed of 120rpm, that means we need the following gear ratios to achieve this effect: 120:31, 120:29, 120:1, 7200:1801, 7200:1799, 7200:1, 86400:21601, 86400:21599, 86400:1 But put more simply, all main hands are reduced 4:1 from the main input, then one turn is added or subtracted from the relevant hands over the relevant time period by use of differentials All gear ratios are accurately represented in the machine and ignoring wear and tear issues, noise and impracticality concerns, would indefinitely keep accurate time. The time can also be set as shown in the video. The minute adjustment will change the part of the rotation that the minute and hour hands peak. (The hour hand position needs to reflect the minute hand position.) It also adjusts the amount that these hands are through the current rotation to keep the timing of the hands pausing in sync with each other. The hour hand adjustment will adjust the hour hands only in a similar fashion.
Views: 105992 TECHNICally Possible
On Longing Piano Cover by Lego Mindstorms EV3
Piano playing Lego robot. Uses one main driving motor, and 3 motors to control positioning of: The single finger of the left hand on the first note, the two fingers of the right hand on the third note, and the third finger of the right hand on the 4th note (sometimes). Link to this song on iTunes: https://itunes.apple.com/au/album/under-the-town/id507008810
Views: 794793 TECHNICally Possible
Lego Guitar Robot: A Closer Look
A (fairly rough) rundown of the working parts of my guitar playing Lego robot. Link to original video - https://www.youtube.com/watch?v=cXgB3lIvPHI
Views: 329599 TECHNICally Possible
Daft Lego EV3 Programming Tutorial
A walkthrough of the EV3 program controlling the 2 axis camera rig of my Daft Lego video. (Probably best viewed in full screen 1080p to see program details) Link to the original video: https://www.youtube.com/watch?v=lUa02LHh1xQ Download the EV3 Program File: https://drive.google.com/file/d/1ylLF31WPhmbddqLHPj8y6lSm3QH4ZwAf/view?usp=sharing Download the Excel Spreadsheet: https://drive.google.com/file/d/1Va4fdscAvbtDI9Ue6prvTklkCWwtHTNK/view?usp=sharing
Views: 2711 TECHNICally Possible

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