Videos - The Coin Bot

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00:00:00	hello everyone and welcome back to the channel I know in the last video I said that I was going to be talking about threaded inserts but I decided um to just show you an overview of the coin collection mechanism which is the next
00:00:12	layer it's the very bottom layer of this coin robot those of you who've been following along know that I'm trying to build a robot that is capable of sorting coins by date so that I can automatically find pennies that are
00:00:25	worth adding to my own Penny collection in the last video we talked about this piece here I'm calling that the coin stacker as we saw the coin sorter will rotate over this area here now this one's just a prototype but you can see
00:00:40	the the general shape of the outside of this thing the all the electronics and the camera will sit in this area here you can see that these slots here line up with those holes that are in the top of that coin stacker so as the pennies
00:00:57	come down this ramp they will actually drop into one of these slots in that would sit one of these coin rolls and I ended up actually over engineering all of these but it's kind of fascinating because there's a little there's a
00:01:13	little catch right there at the top of this and that latches onto this little space here and this is actually also a compliant mechanism and this has a little a little hook in the bottom here that latches into the base here and that
00:01:35	will in theory All Connect like that as you can see this prototype doesn't quite line up very well but you get the idea of what this is supposed to work like now like I said I I I even prototyped several of
00:01:52	these um this is my first design the thing that you'll notice about this is that when you rotate this out of position there's a little bit of an angle that forms at the top of this so this
00:02:06	obviously would just push the top of the coin stacker up and we don't want that to happen so the next iteration I actually chopped off a little bit of that angle so that these would actually tip forward when you're trying to pull
00:02:19	these out but in the final version I angled that just a little bit so that you would be able to tip that forward and out the other thing I did uh is to add these little tick marks for every 10 pennies so this uh or actually every
00:02:35	five pennies so um you would be able to count off how many pennies had been stacked up in this just by counting the number of notches so this is 5 10 15 20 25 30 35 40 45 and 50 which makes a full roll and the way that works is you would
00:02:53	have one of these coin holders that sits in there and the pennies would actually drop down in there so so if we we just drop that you can see that the penny lands in the bottom there and we can stack um you know 50 cents which is a
00:03:07	which is a roll of pennies now the interesting part about this is that I I ended up um realizing that that wasn't exactly the perfect plan because I had these these ramps very spread out and it
00:03:28	covered most of the area of the it ended up covering most of the area of the outside perimeter of this uh coin collection unit um but what I decided to do was make this just a little bit more compact if I can rotate these um to make
00:03:46	these a little bit closer together that leaves us more room in here to collect the majority of pennies which actually will have low or or very little value and the finished version actually ended up looking like like this so I'm pretty
00:04:06	happy with the way this came out and I think it's pretty cool now the other thing that I like about this is that there's a little drawer here that you can use to collect the the majority of the change but I think overall this
00:04:24	is going to work out really well and like I said the coin sorder mechanism this coin sorder mechanism is going to sit up on top of this it will spin on this bearing that I put in there very freely and then it will be able with a
00:04:40	stepper motor it will be uh able to select which one of these slots the coin gets dropped into as this passes around and in this final position here in the center it'll just drop down through the center and then it will collect in this
00:04:57	larger container down here at the bottom if I take this off all the coin rolls are going to fall out but you get to see from a top view down what what that actually looks like so that's kind of exciting you can see that these actually
00:05:12	rotate out and you can pull those forward and then you have this you have this full-size drawer that you can pull out that will hold the majority of the coins now the higher value coins will be distributed along the outside edge and
00:05:26	they'll be placed in these uh Co coin rolls but the lower value coins will all collect in this big drawer here and all the electronics and the camera equipment on the lower half of the studio will be
00:05:35	in this space here so I think that's about enough for this video for now that's my two cents thanks for watching everyone stay awesome