Videos - The Coin Bot

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00:00:00	if you've been following along you've seen that I've gone through this planning and ideation process over several months it's not something that happens overnight you have to allow yourself freedom to brainstorm sketch
00:00:12	and gather inspiration in the case of Designing a camera studio for the pennies I started by thinking about the mechanisms for moving the coins around initially I came up with the idea of a linear motion for
00:00:24	the piece I was calling the coin slider but guess what that has all changed more recently I've been considering turning the coin slider into a design that's slightly more round and so the initial idea of the coin slider has evolved from
00:00:38	linear to rotational and that's the beauty of the ideation process it allows you to explore different possibilities and discover what works best for your finished design after you've designed and thought up the ideas for all the
00:00:51	individual pieces of your robot it's time to put them all together similar to the shelf supports I'm using freecad which has both 2D drawing and 3D modeling tools it's super powerful and allows me to sketch out all of my ideas
00:01:05	digitally and perhaps best of all it is absolutely free to install and use I'll leave a link below in the description with the download page hey everyone this is future Dan I just wanted to let you all know that I've also been doing a lot
00:01:18	of work on the coinb.in the comments here in freecad I'm using the 2D drawing tools to create an overhead view of the the finished robot incorporating the rotational coin slider and the other key components it
00:01:36	feels a little bit like playing with a bunch of puzzle pieces and figure out how they'll fit together to form the bigger picture what's fascinating is that with access to a 3D printer I know I can create precise shapes and
00:01:48	dimensions in my first iteration of the coin Studio I was using a pill bottle with almost the right dimensions but not quite but now I can make the final design have the perfect dimensions for example I know that I want the finished
00:02:03	Studio to have a string of 20 addressable LEDs and when I measured the length of a string of 20 LEDs I get a distance of 158 mm but the diameter of a circle is needed to create a circle in fread not the
00:02:18	circumference however by rearranging the equation Cal Pi D we can determine the diameter in this case we know the circumference is 158 mm so we simply divide that by pi and get a diameter of approximately 5029 mm that Dimension
00:02:36	will allow me to create a very precise Circle in freecad with a circumference of exactly 158 mm and in turn I can build the rest of the coin lighting Studio around that I also know that a penny has a
00:02:50	diameter of about 19 mm which is 3/4 of an inch so I can add a few circles to represent where the pennies will go now that those dimensions are set I can just play around dragging the other circles around to find the best overhead layout
00:03:06	I know I'll also be adding gears and other mechanisms to facilitate rotation doing my best to reduce the overall part count and thus keeping the cost of the finished robot to a minimum everyone has their own preferred process and for me
00:03:19	it's about spending time chewing on ideas before committing them to paper or digital ink I use whatever tools are available to facilitate the design process but programs like freecad are fantastic for going through the design
00:03:33	process generating ideas and bringing them to life so planning and ideation are the first step in rapid prototyping it's all about exploring refining and unleashing your creativity but what do you think is the next step in the robot
00:03:48	design process feel free to drop your guesses in the comments below and let's see if you're right a lot of boring math later now it's time to start designing individual parts for our coin photographing robot we're going to get
00:04:02	these 2D designs pulled into a third dimension and ready for 3D printing in this segment we create the rotational coins slider by first generating a gear in freecad we'll use this later as our Drive mechanism now we take that 2D
00:04:17	drawing of the coin slider that we created earlier attach it to the top surface of the gear and extend the coin slider into the 3D World by extruding that shape along the z-axis we then align it with the coin stack above and
00:04:31	attach it to the upper Penny camera at this point it's all about lining up the pieces and pulling them along one of the axess to bring them into 3D relief once you finish connecting these dots you end up with a single cohesive design now the
00:04:47	top camera coin stack and coin slider are all connected and we can pull each of them vertically to create a 3D part it's like watching our creation take shape right before our very eyes but we're not done yet at the bottom of the
00:05:02	coin robot we'll have a section that houses the bottom coin Studio this is the same dimensions as we discussed for the upper coin Studio but we'll connect the bottom camera and the coin sorter and ensure that everything fits together
00:05:16	seamlessly to make the coin sorder even more Compact and functional I have yet another ingenious idea implementing a clutch mechanism this will allow the coin slider to only rotate counterclockwise while allowing the coin
00:05:30	sorder to only rotate clockwise and this will all be accomplished with a single stepper motor this effort to reduce the part count should make the finished robot easier to assemble and cheaper to build taking the time to think through
00:05:45	these design considerations can make a world of difference it's all about refining optimizing and solving potential issues early on that's the beauty of the design process we can fine-tune our ideas and create something
00:05:59	we can truly be proud of at this stage we have an almost finished product the layout represents the rough blueprint of our final design we still have to create some interconnecting pieces and ensure that everything snaps together like a
00:06:13	well-oiled machine but I can't wait for all that it's time to see how our design translates into the real world so in the next segment we'll be firing up the 3D printer and printing what we have so far
00:06:25	so my friends stay tuned for the next part of our rapid prototyping Adventure well we'll refine our design conquer the challenges of 3D printing an inch closer to capturing stunning photos of pennies for now that's my two cents thanks for
00:06:37	joining me today and don't forget to like subscribe and hit that notification Bell to never miss another adventure on this channel stay awesome and I'll see you in the next video take care everyone