**** BEGIN LOGGING AT Tue Nov 03 03:00:33 2020 Nov 03 03:05:15 I am late. Dang it. I will try again tomorrow. Nov 03 03:17:16 GenTooMan: Anyway, if you read this post at any time, here are my dimensions for one of the screws and slides: 5 3/8" of moveable slide. Nov 03 03:17:19 Dang it. Wait. Nov 03 03:21:01 So it is: 5 3/8" - (1 1/4"/ 2) of moveable space on the slide and screw or 4.625" of moveable space. Nov 03 03:23:12 That is all there is on the slide. So, there is an actual block in the middle of the slide on the screw. That block is what is controlled by the stepper. Nov 03 03:26:01 At least, I want to control this block on the screw from the servo. Nov 03 03:26:40 I can already but the limitations are obviously known. I wonder what I can do to prevent the block from hitting its extent... Nov 03 03:29:40 you have a mechanical stop? do you have a stop switch? Nov 03 03:31:04 No. Nov 03 03:31:17 I have a stop actually but I have not put it in place yet. Nov 03 03:31:27 I have no stop switch. Nov 03 03:32:03 I thought some math could figure out the issue instead of using more hardware. Nov 03 03:32:13 Is that the wrong approach? Nov 03 03:33:03 I can always import math and do some fancy stuff. But. I think "fancy stuff" is the obscurity right now. Nov 03 03:34:01 For one...I have not clue as what I should call 0 and what I should call 1 to n, i.e. when n is the magical stop. Nov 03 03:34:57 I mean. I sort of have a stop switch. It is a standby switch if things go awkward. Nov 03 03:35:08 It is actually on the Cape. Nov 03 03:35:09 they have a stop switch to find out of the device has run it's length. Nov 03 03:35:24 Right. Nov 03 03:35:28 Okay. Nov 03 03:35:56 So, I have two lengths on this device. Start and Stop are my lengths. Nov 03 03:36:28 Ok You don't get it obviously. So let me explain a bit in terms you can understand. First if the device runs tell it jams. This is generally a bad thing. Nov 03 03:36:42 Right, right. Nov 03 03:36:53 See. Nov 03 03:37:06 second all devices require stops. This is not a question of design, it's a legal requirement for safety. Nov 03 03:37:15 Oh. Nov 03 03:37:17 I got you now. Nov 03 03:37:21 Oops. Nov 03 03:37:22 Okay. Nov 03 03:37:32 safey matters. I get that. Nov 03 03:37:38 Well you don't want the more to catch fire break things and people. Nov 03 03:37:48 motor not more. Nov 03 03:37:58 Right. This is basically for me and me only for now. Nov 03 03:38:29 so you MUST have a stop E-Stop they call it. The motor won't operate as long as it's active. It's great if something does the unexpected. Nov 03 03:38:55 I know about switches and stops. I think the 3D Printing world calls them endstops. Nov 03 03:38:57 Okay. Nov 03 03:39:37 next you have end stops which are another type of stop. those are for knowing when the motor has run as far as it can go. Useful for positioning. Nov 03 03:40:18 Okay. I know this idea is boring you already. Nov 03 03:40:56 I did industrial design for a while. It was fun to an extent. Nov 03 03:41:03 You seem upset but do not fret. I understand about those endstop things. I can already make source for them to be there and have the motor abide by the stop. Nov 03 03:41:14 Sir, I am just doing this for common knowledge. Nov 03 03:41:57 I cannot go further until I actually apply myself. My thought about the magical math was not related to endstops. Nov 03 03:41:59 But... Nov 03 03:42:14 set_ your hands fingers etc. are more important than what you are playing with. So safety should be considered at every step. I've read the obituarys of many people who didn't follow that. Nov 03 03:42:24 I can use them instead of fancy-Dan math. Nov 03 03:42:27 Yes sir. Nov 03 03:42:30 I got it. Nov 03 03:42:44 I got my finger stuck in a big wheel once. Nov 03 03:42:47 It sucks. Nov 03 03:43:03 Hell, I got my finger stuck in a clip board once. Ha. Nov 03 03:43:18 Anyway, so this is it. end stops! Nov 03 03:43:20 I have had far more crazy experiences. Nov 03 03:43:24 Ha. Nov 03 03:43:41 I will use what I have already in inventory. Nov 03 03:43:54 Oh. Nov 03 03:43:59 I may not be able to use them. Nov 03 03:44:13 anyhow you should have some switches floating around that may work. Nov 03 03:44:28 I have slide switches and pots. Nov 03 03:44:39 They are not on/off though. Nov 03 03:44:54 The e-stop should be enlisted. YOu are right. Nov 03 03:45:03 Oh Nov 03 03:45:08 tact switch you can use as an end stop. Nov 03 03:45:09 I got an on/off switch. Nov 03 03:45:23 I got this sucker at the dawn of time. Nov 03 03:45:30 I just remembered. Nov 03 03:45:36 Oh. Nov 03 03:45:38 Button? Nov 03 03:45:43 I've never heard of that store.. Nov 03 03:45:47 Ha. Nov 03 03:46:48 So, the source should be with an end stop on both ends of the stopping portions of the slide block. Nov 03 03:47:04 Oops. I confused that sentence to smithereens. Nov 03 03:47:50 So, I should have two endstops per stepper mechanism? Nov 03 03:48:26 One for the closest extent and then one for the furthest extent? Nov 03 03:48:59 I have a 3D Printer, out of commission, that has one endstop per axis. Nov 03 03:49:13 I did not understand that concept at the time. Nov 03 03:49:38 I still do not. Nov 03 03:50:37 Or should I put the block at where I call 0? Nov 03 03:51:03 I mean, I can, I could but...well. This may be a start. Nov 03 03:51:19 Actually that is a position detector. Nov 03 03:51:53 Ie you are hear they have "magical" numbers in the stepper system for positioning based on what you did to calibrate the thing. Nov 03 03:52:19 Oops. Nov 03 03:52:27 Hmm. Nov 03 03:52:29 So it finds where it is by going to the stop (slowly) then moves to the position it had calibrated as 0 Nov 03 03:52:47 So, I would need a position "detector?" Nov 03 03:53:03 That sounds expensive. Let me look that up. Nov 03 03:53:25 hmm you need one at minimum. You can again use a tact switch because you are moving slowly. Nov 03 03:54:22 I am only dealing w/ x and y. No Z. Nov 03 03:54:46 My thought is only about x and y. I am not going to have a z-axis or value. Nov 03 03:54:58 Right. Real slow. Nov 03 03:55:38 I think my switch/endstop is for a 5v application. Nov 03 03:55:49 Dang it. Nov 03 03:56:07 It was made by makerbot.com. Odd. Nov 03 03:56:18 Oh well. I will deal w/ that issue later. Nov 03 03:56:37 GenTooMan: It is almost 10:00. What should we do? Nov 03 03:57:36 So, like a moveable block w/ two layers is the idea. Does that make sense? Nov 03 03:57:45 And... Nov 03 03:58:11 On one of the blocks is writing utencil. Nov 03 03:58:19 Pen, marker, pencil, whatever. Nov 03 03:58:46 each axis can be made more functional with it's own end stop. So 1 end stop per axis is actually a minimum. Again your stop switch can be a tact switch which is anywhere from 0.05 to 0.50 depending on what you get. Nov 03 03:59:05 Okay. Nov 03 03:59:08 I have them in stock. Nov 03 03:59:18 I grabbed a few of them years ago. Nov 03 03:59:30 They still work to my knowledge. Nov 03 03:59:39 next you need to rigidly mount them so they aren't moving around when they get touched etc. Nov 03 03:59:48 Right. Okay. Nov 03 04:00:06 you move it slowly so that you stop stepping the moment you hit the end stop (FYI). Nov 03 04:00:26 I will have to make a circuit on the breadboard first and then on to the perfboard. Nov 03 04:00:27 OH. Nov 03 04:00:28 ! Nov 03 04:00:38 OH. Nov 03 04:01:17 I was using what I thought was the maximum number in b/t steps. Nov 03 04:01:21 But... Nov 03 04:01:36 I was mistaken as usual. I can make it faster or slower. I got it. Nov 03 04:01:51 I just remembered. Nov 03 04:02:18 You can learn from 3d printer operation behaviour also. Nov 03 04:03:05 Yea. The Z-axis and probe are bogus on it. Nov 03 04:03:32 IF you keep going to the upper limits of the Z-Axis, it just detaches. Nov 03 04:03:33 Ha. Nov 03 04:03:53 It detaches the screw from the stepper. Nov 03 04:04:16 It is a nice one too. One mild malfunction. Nov 03 04:05:45 GenTooMan: Do you think that servo connections could be used to work w/ a NO/NC switch or endstop? Nov 03 04:06:12 That sounds silly but they are 5v in theory. Nov 03 04:06:48 I think. I better read more about the Motor Bridge Cape. I can test it later. Nov 03 04:07:16 It says it on it. 5v. It is on the Cape. Nov 03 04:07:48 So, anyway. Nov 03 04:07:52 I will test it soon. Nov 03 04:08:29 So, when endstop hits, the machine bounces back a step to stop or to move in the opposite direction. Nov 03 04:08:46 I wanted to type that out. Nov 03 04:08:47 Okay. Nov 03 04:16:00 Anyway...the endstop mfg. is gone-pecan for now. Nov 03 04:17:11 Well. the old wiki is gone. Nov 03 13:34:24 m Nov 03 13:35:42 p Nov 03 14:37:03 gm Nov 03 15:41:42 * Ragnorok wait to get voice like everyone else Nov 03 15:47:05 hmm, all those messages are for [m] nicks Nov 03 22:08:48 Okay. What should I do if my wifi stops working on the BBGW and the desktop is showing the BBGW but I cannot sign in? My wifi LED is not lit any longer, too. Nov 03 22:12:15 I got in but w/ COM instead of tty. Nov 03 22:12:35 Um, should I run the command journalctl -x? Nov 03 22:40:08 Forget it. I figured it out. Nov 03 22:40:40 P8.11 is used on the Cape and w/ the wire in p8.11, the board and the Wifi cannot be used. Odd? Nov 03 23:09:41 set_: I've told you many times about the pins used by the BBGW for wifi/bt, and even made an overview of those pins: https://pastebin.com/Fi8Vh0n5 Nov 03 23:13:51 I know. I am sorry. I figured it out too late. Usually I just cannot use config-pin when this happens. Nov 03 23:23:59 correct, config-pin will refuse to reconfigure such pins. though if you try to use an overlay instead then the conflict will be detected too late Nov 03 23:27:19 Oh. Nov 03 23:27:22 Now, I see. Nov 03 23:27:24 Okay. Nov 03 23:28:15 I am listening to GenTooMan now. I have been programming a stepper with slide and I incorporated an endstop to make sure things do not pass the limit. Nov 03 23:28:54 I can only move one step at a time now w/ the endstop in place and ready with the Adafruit_BBIO.GPIO lib. Nov 03 23:29:08 Odd? Yes but I am learning slowly. Nov 04 00:13:41 so you step then check for end stop condition? Nov 04 00:16:37 bleah need to get my new MB working this is so danged slow. Heh It should be about 4 times faster to do these things. Nov 04 00:19:22 Ha. Nov 04 00:19:37 Yep. Super slow on my end. Get up and runnin'. Nov 04 00:51:17 At first, I figured it would be as easy as implementing the Adafuit lib. to detect events. Nov 04 00:51:41 Oops. My source is terrible. You know how it goes. Anyway, dinner and then programming. **** ENDING LOGGING AT Wed Nov 04 02:59:57 2020