Videos - The Coin Bot

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00:00:00	hello everyone and welcome back to the channel uh in the last video we were talking about when you first turn a machine on there's no way of knowing what position the servo motor is in unless you have some way to account for
00:00:13	that and if you've been paying attention I haven't designed anything into these parts to tell that Servo motor where it is when the machine first starts up now the second thing that I needed to account for was to try to figure out
00:00:30	how to um use a limit switch with this uh coin sorter mechanism as well and that became quite a task um I had the dimensions of the limit switch worked out um with these final designs here so that was really nice so I I could kind
00:00:47	of copy this limit switch holder over to the the part that's going to eventually hold on to this coin sorder but then I needed to figure out how high to make it and exactly how far back to set everything um and that took a little bit
00:01:04	of work so as you can see my initial designs for this didn't really have any way to account for that limit switch there was no way to hold on to the limit switch and I I actually ended up wasting a lot of plastic like printing multiple
00:01:19	copies of this but I'm okay with that because I really want the finished product um to be able to be printed pretty easily I want all the final Dimensions to be dialed in so that I can just just print the the um different
00:01:31	versions of this if people are interested in in this at a later date if I get it all working you can see that I actually printed a little standoff here to hold the limit switch underneath this coin sorting mechanism and I got the
00:01:47	height right that's going to it's going to ride along this rail here so that's going to work out very nicely so the height is perfect but the problem with it is is that there's so much play in this wheel that if it's jiggling
00:02:07	around in there it'll actually activate the switch and so you can't have a positive stop in here to know exactly where the servo motor is going to be that required a little bit of work with the xacto blade I cut out those little
00:02:21	cogs here that were holding the limit switch uh into position forwards and backwards and then I could actually move Mo the limit switch physically forward and back until I got it exactly the right position so I wanted to print a
00:02:37	new version of this coin sorder so that it has a little Cog that would activate that limit switch and in this version I made the dimensions of this larger hole a little bit smaller so that it would be a little tighter there would be less uh
00:02:51	less play in the coin sort mechanism that I showed before and I also adjusted the position of this standoff I mov the entire thing back just a little bit so you can see that there's a little bit of a lip there and um you can see that this
00:03:07	is just uh still at the same height but we got our little our little cogs back to control exactly where that is so we attempted that um it turns out that this so that it turns out that that outer this larger circle is actually now
00:03:27	too tight and it's too hard to turn the coin sorder uh with the bearings involved so I wanted to adjust that a little bit and in the final version I wanted to make sure that this this was in exactly the right position
00:03:43	this ended up being the the finished version um I made a couple of improvements I made this camera studio just a little bit smaller so that it can fit directly into the next lower part the standoff is a little bit just a
00:03:58	little bit further back so that the limit switch gets activated more uh accurately and I increase the size of these holes so that they line up with the alignment pegs on the next layer down in this finished version if I put
00:04:12	it together really quickly you can see that the new version of the coin sorter doesn't have any play in it it rides along these bearings effortless effortlessly now so that's nice but it's tight and there isn't any play in it you
00:04:27	don't see any wiggling in that so that's great and on the other side you can see that as this Cog comes around Cog goes by the limit switch it actually activates it so that is very exciting so that will
00:04:44	mean that we will have accurate control of where this coin sorder is and we'll be able to drop coins into specific bins so that's pretty exciting but I think that's enough for this video in the next video we're going to talk about where
00:04:54	the coins go next so the layers below this will start to collect coins into specific bins but for now I think that's my two cents thanks for watching everybody stay awesome