ED 1 - Sagar-I-Holennavar/sagar GitHub Wiki

                                         **PERTINENT INFORMATION GATHERING**

Need Statement: “Sand art is becoming famous day by day .A robot manufacturing industry is looking forward to showcase their product in an upcoming sand art exhibition by exhibiting a sand drawing robot”

Existing Solutions:

https://user-images.githubusercontent.com/42510280/49453407-0eb5f500-f809-11e8-8926-63a0e9a90992.PNG

Video link: https://youtu.be/eBRrQBPtdak

Beach bot:This cute little robot looks like a turtle with a big orange shell and it is designed to do something fun at the beach. The Beach bot is designed to draw large scale art in the sand as it rolls around under its own power. The robot was designed by a team from ETH Zurich and the Zurich division of Disney Research. The robot rolls around and draws in the sand using a rake attached under its body. The bot is able to control the pressure on that rake to make marks in the sand. The biggest challenge for the team was figuring out how to translate the pictures they want the robot to draw in the sand into something the robot could understand Mechanical Components: wheels, gears,Nuts and bolts, chassis Electrical Components:laser,servo motors,

To do this the researchers developed an algorithm that can turn images into trajectories that the robot can work with. The algorithm isn’t perfect just yet the team still has to tweak the Beachbot’s work manually when it works on a large project.

https://user-images.githubusercontent.com/42510280/49453410-0fe72200-f809-11e8-8846-b7719364fbcd.PNG

Video link: https://youtu.be/7T1esQgRwrM

Sand drawing robot:The device takes the form of a gantry-style system that you might be familiar with from your CNC router or 3D printer. One axis is pulled back and forth with a belt drive and motor setup. The other axis, though, is different than a traditional CNC machine, as it moves across the beach using four wheels. Instead of spindle or extruder, the sliding portion simply has a hobby servo that pokes into the ground when needed, intermittently rending the sand.

The robot is effectively a long bar that acts kind of like a printer, rolling across the beach and spelling out messages by making a series of dashes in the sand. A mechanical unit slides across the main metal bar and when it gets to the spot where it needs to draw, a little notch drops down and makes a stripe in the sand. Mechanical Components: Metal rods, Rollers, Chain, Nuts & bolts Electrical Components: Navigators, Wire & Diodes, GPS

https://user-images.githubusercontent.com/42510280/49453411-107fb880-f809-11e8-9242-8038009c76bb.PNG

Autonomous Beach Art Robot: While walking along the shore, the footprints you leave behind are mildly interesting, and perhaps you might go to the effort of scraping a pattern in the sand if you were feeling rather creative. If, however, you wanted to make drawings on a massive scale, Ulysses’ robot “Pablo Odysseus” looks like an elegant solution.

The Adriano-powered rover uses two wheelchair motors to propel it along the beach, as well as a rake to leave a mark as to where it’s been. Navigation is provided by a GNSS receiver (a more general term for “GPS”), a digital compass, and an odometer set up on each of the motors. Meanwhile, USB dongles enable it to communicate wirelessly with a smartphone and laptop. Mechanical Components: wheels, Encoders, aluminum chassis, retractable rake Electrical Components: Dual odometers, arduous, GNSS receiver

https://user-images.githubusercontent.com/42510280/49454268-d0b9d080-f80a-11e8-8ecd-e7b36472aee4.PNG

YouTube link: https://youtu.be/5YbcwAlJzvI

Sand Drawing Machine: The dosing device for the sand is completely reworked the valve is now sitting down so the hardly still sand creek is there.

Sandspur thickness can be adjusted via replaceable nozzles made of POM. Working area is Y 800mm X is limited only by the space (tested to 10m) or alternatively there are still 1500mm wide rails then Y goes to 1300mm. Its quick change system work excellently. Consumption will be tackled with larger can (750 ml instead of 400 ml, which also fit into the receptacle) and a modified nozzle 0.3 instead of about 0.6 mm. The machine runs for about 3h. Mechanical Components: wheels, funnel, outlet nozzle Electronic Components: GUI, GPS, motors, Adriano Nano

Link of mechanical and electrical parts:

DIY Project links:

Mechanism/Principles:

https://user-images.githubusercontent.com/42510280/49453413-11184f00-f809-11e8-8e7d-d75054ea4b3a.PNG

Link:https://www.thefabricator.com/article/stamping/servo-press-forming-applications-part-ii

Working principle of servo motor: Servo motor works on PWM (Pulse width modulation) principle means its angle of rotation is controlled by the duration of applied pulse to its Control PIN. Basically servo motor is made up of DC motor which is controlled by a variable resistor (potentiometer) and some gears.

Nozzle and flapper mechanism:

https://user-images.githubusercontent.com/42510280/49453422-12e21280-f809-11e8-8ca0-4f7c8d7b38f1.PNG

Nozzle and flapper mechanism (For opening and closing of sand valve): The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal, by covering the orifice of a nozzle with a flat plate called the flapper. This restricts the nozzle fluid flow and generates a pressure signal.

Present Solution for the Problem: Kinetic Sand Drawing Machine: In a 21st century take on the traditional Zen sand garden, artist Bruce Shapiro invented the Sisyphus Machine, an elaborate kinetic drawing machine that uses magnets to drag rolling steel marbles through a thin layer of sand to create complicated mandala-like patterns. Shapiro, who was once a practicing physician, has spent the better part of 25 years experimenting with computerized motion control and many of his Sisyphus Machines have been installed in locations around the world including a large device in Switzerland back in 2003 and at Questacon in Canberra, Australia in 2013. It appears the artist is currently working on a tabletop consumer version and if you’re interested you can sign up for his mailing list here. (viaCore77, Fast Company)

https://user-images.githubusercontent.com/42510280/49453424-137aa900-f809-11e8-8b51-2355e6379e17.PNG

Direct Solution: 1.Usage of hands for the sand art 2. By using sand tools 3. by usingsticks Set Up:

Try to set a proper expectation with your clients
Test your applications/product prior to media and before sale
Know your applications 4.Try to test it on the surface you know will work for your application Our intention:
It must auto change minimum of two to three designs
It should design with accuracy what we have programed to do it

Reference: