#garfield Logs

Mar 23 2025

#garfield Calendar

12:06 AM aandrew: yeah. I only knew one person who died from ALS, did not know him that well, was my oldest son's gf's dad
12:19 AM aandrew: construction guy type of person... just a shadow of a man at the end
12:19 AM aandrew: it was fast, I think like under a year
12:19 AM aandrew: it's no way to go
12:19 AM rue_shop3: its the foundation of horror moview
12:19 AM rue_shop3: its the foundation of horror movies
12:19 AM aandrew: these wasting diseases are awful
06:51 AM rifraf: rue_mohr hey, this image you saw shows 2 ways of driving the input, one a switch, other transistor, https://desire3d.com/images/public/ServoInputs.JPG
06:51 AM rifraf: both have external 12 - 24v volts on COM+
06:52 AM rifraf: https://desire3d.com/images/public/T3D-inputs.png this is same controll, but has more notes on it
06:53 AM rifraf: look well you can focus for more than 10 seconds please, so using DI 1 to DI4 does it maybe need a pulldown to ground instead? or use a transistor/fet to switch it
06:55 AM rifraf: Note 3: seems to say they are switched low effective by default, and can make the control active low outputs if needed
11:45 AM rue_mohr: so rifraf , IF an input requires a drive to +, you have to use a pullup, BECAUSE the COMMON of your open collector outputs on the cnc controller is GROUND
11:45 AM rue_mohr: my comment yesterday was wrong
11:47 AM rue_mohr: so you cant use the other method with the 12V series source becasue the common of your controller is fixed to ground
02:54 PM rifraf: getting so cunfused, yes, controller is common ground, the inputs on AC servo appear to have common +.  So the solution is to... ?
02:56 PM rue_mohr: If an input has to go high, you have to use a pullup resistor
02:56 PM rue_mohr: the emitter of your system is locked to ground, you cannot attach it to anything else
02:57 PM rue_mohr: if a diagram shows the emitter connected to anything other than ground, you have to use a different circuit
02:57 PM * rue_mohr pours rust-be-gone all over rifrafs electronics skills
02:57 PM rifraf: but my iputs looks like ity has to go low?
02:58 PM rue_mohr: oh, give me all the circuit images again and I'll draw you a diagram
02:58 PM rifraf: no my skills are not that bad, am just getting fed contradicting info
02:58 PM rifraf: rue_mohr hey, this image you saw shows 2 ways of driving the input, one a switch, other transistor, https://desire3d.com/images/public/ServoInputs.JPG
02:58 PM rue_mohr: so, you realize for all this trouble, you could have just not bought a fancy driver? :]
02:58 PM rifraf: both have external 12 - 24v volts on COM+
02:59 PM rifraf: stop it
02:59 PM rue_mohr: ok, so your emitter is hard-wired to grond
02:59 PM rifraf: and spend months trying to make an inferior product, no this is a good driver and controller
02:59 PM rue_mohr: so you can use the right hand circuit
02:59 PM rifraf: exactly what i wanted to do
03:00 PM rifraf: but you said, no don't use a transistor / fet
03:00 PM rue_mohr: the trasnsitor shown is the output of your cnc controller
03:00 PM rifraf: https://desire3d.com/images/public/T3D-inputs.png this is same controll, but has more notes on it
03:00 PM rue_mohr: the resistor and led is the input of the servo controller
03:00 PM rifraf: the transistor does not exist yet
03:01 PM rue_mohr: its inside your cnc controller
03:01 PM rue_mohr: the outputs of your cnc controller are *effectivly* transistors to ground
03:01 PM rifraf: what other schematic you need to make it clear the components required between the output from controller and the input of driver please?
03:02 PM rifraf: ok listening
03:02 PM rifraf: remeber nothing worked , but i got stuff working somehow but hacking things, i need to usderstand so i can repair
03:03 PM rue_mohr: I'm reading some stuff a guy wrote, inspired by me, then I asked for details about what he was talking about later, I'm designing a pcb, and talking to you
03:03 PM rue_mohr: and my foot is asleep
03:03 PM rifraf: ok won't help
03:03 PM rue_mohr: so, lets see
03:03 PM rifraf: please when you have a few minutes to focus try and help
03:03 PM rue_mohr: your wiring your cnc controller to the servo driver, right?
03:03 PM rue_mohr: I can never focus, I get further every day
03:04 PM rue_mohr: I spend most of my time telling myself to "focus" but its useless cause I cant tell myself *what* to focus on, and there are a LOT of voices in here
03:04 PM rifraf: i have all manuals put up here to assist. https://desire3d.com/PDF/
03:04 PM rue_mohr: I have one voice just pondering what a US invasion might look like
03:04 PM rifraf: i know you cannot focus, thats why i asked you to nicely
03:04 PM rue_mohr: hmm
03:05 PM rifraf: get a cup of tea and settle, then we can try do things logically, i will leave the wiring for now
03:05 PM rue_mohr: what controller output do you
03:05 PM rue_mohr: someone just came in the driveway
03:05 PM rifraf: see ... :/
03:09 PM rue_mohr: nobody there, must have been a turn-around
03:09 PM rue_mohr: what controller output do you want to connect to which servo input?
03:10 PM rifraf: https://desire3d.com/images/public/output.jpg
03:10 PM rifraf: OUT7 to DI 2
03:10 PM rifraf: i can remap any of the inputs to what i need
03:11 PM rifraf: actually was OUT2 , but is the same, OUT 7 going to 1K R and 5 V to drive rhte FET board perfectly at the moment
03:12 PM rifraf: OUT2 needs to trigger DI 2
03:13 PM rue_mohr: ok
03:15 PM rue_mohr: which pdf shows your controller outputs?
03:15 PM rifraf: SMC,  https://desire3d.com/PDF/SMC5-5%20User%20Manual%20-%20V3.01.pdf
03:15 PM rifraf: will find the page for you even
03:18 PM rifraf: https://desire3d.com/images/public/output.jpg image upside down here so should be correct up there, sorry
03:20 PM rifraf: remember, i got all this working for myself without help, so not a complete idiot, i know something was incorrect, and now that i rewire not working, i can see the outputs going high and low just fine
03:21 PM rifraf: just want to hook it up correctly as someone with your electronics wealth could do i know
03:22 PM rifraf: have new servo arriving today, see i told you it would just be a matter of days to get from CN
03:22 PM rifraf: did you look at note 3: on this diagram?
03:23 PM rifraf: https://desire3d.com/images/public/T3D-inputs.png
03:24 PM rue_mohr: takes me a minute to draw
03:24 PM rue_mohr: http://media.ruemohr.org/images/p1340134.jpg
03:24 PM rifraf: all good, no hurry
03:24 PM rue_mohr: ^^
03:24 PM rifraf: and thanks for your time
03:25 PM rue_mohr: wish I had someone to go to for help
03:25 PM rifraf: ok , thats how i initially wired it, does not trigger input
03:25 PM rue_mohr: hu!?
03:26 PM rue_mohr: com+ to 24V? tho I think 12 would do...
03:26 PM rifraf: all you have done is connect the output to the input
03:26 PM rifraf: yes 12V works fine, is 12 - 24 inout on COM+
03:26 PM rue_mohr: yes, thats all it needs, WITH an external power supply
03:26 PM rifraf: tried
03:27 PM rue_mohr: the datasheet says 24V, but even with 4.7k, 12V should trigger the opto just fine
03:27 PM rifraf: i need to increase the voltage of OUT7, is not even 3V
03:27 PM rue_mohr: hu, your supply isn't right
03:27 PM rifraf: ok, i will try again
03:27 PM rifraf: i know it is, i can measure the 12V
03:27 PM rue_mohr: make sure the GND on your controller is grounded, cause its isolated and not automatically hooked to ground
03:28 PM rue_mohr: er, wait, they use another name
03:28 PM rue_mohr: I need that image zoomed out more I think
03:28 PM rue_mohr: how did that go
03:28 PM rifraf: have done nothing
03:28 PM rue_mohr: do you still have the image of the WHOLE backplate?
03:28 PM rue_mohr: not just that partial?
03:28 PM rifraf: yes but you said was too dark
03:29 PM rifraf: pagf 2 of manual SMC
03:29 PM rifraf: page 1 even
03:29 PM rue_mohr: which pdf?
03:29 PM rue_mohr: http://media.ruemohr.org/images/p1340134.jpg ?
03:29 PM rifraf: https://desire3d.com/PDF/SMC5-5%20User%20Manual%20-%20V3.01.pdf
03:30 PM rifraf: there are more out puts above, and one is ground and another is 12V
03:30 PM rue_mohr: ok, yea, the far right ground pin, make sure to connect it to ground of the +12V
03:30 PM rifraf: er actally at the bottom of that image on page 1
03:31 PM rue_mohr: yea, the pullup was needed for the arduino board, the servo one is made right
03:31 PM rifraf: anf the ground for the 12V goes to common ground of servo driver right?
03:31 PM rue_mohr: the COM+ on the servo board goes to your +12
03:32 PM rifraf: yep
03:32 PM rue_mohr: its common, not ground
03:32 PM rue_mohr: 1pm, I should have some breakfast or something
03:32 PM rifraf: same, just coffee for now
03:37 PM rifraf: before i can rewire servo i need to map out every wire going to CN1 and write down the controller settings for every input, because everything worked, you saw servo switching between 0-10V control and basic stepper type positional control
03:37 PM rifraf: by switching an input to acheive different modes, was tricky stuff
03:38 PM rifraf: but did somehow work it out, just not perfectly wired
03:39 PM rue_mohr: why do you want to change it if its working?
03:39 PM rifraf: because it DOES NOT WORK ANYMORE
03:39 PM rue_mohr: ? odd
03:40 PM rifraf: only the stepper mode, since playing with wiring and addit pullups etc to get the pnuematics working
03:40 PM rifraf: not odd, said many times i hacked a 12v line somewhere and things magically worked
03:40 PM rifraf: no idea anymore wtf i did
03:41 PM rifraf: so wanting to understand a little before i try again
03:41 PM rifraf: i know i started by just hooking up the output and the 12V line to COM+ and a ground
03:42 PM rifraf: but did not trigger the input, lets just wait until i have time to map out the CN1 connector and what the inputs are all set to in firmware
04:58 PM rue_mohr: oh no, another paint handle call
04:59 PM rue_mohr: someone *else*
05:05 PM rue_mohr: I should do try to finish that first order
05:05 PM rue_mohr: and I really need to eat
05:30 PM aandrew: https://ibb.co/1fPxhnJf
05:30 PM aandrew: that was exciting... first time I ever saw a rattlesnake in the wild in my 49 years, and I was quite literally one foot away from him
05:30 PM aandrew: heard a weird "chirp" and then what I'd call a kind of rushing noise, I thought it came from the dry creekbed just beyond the top of the photo
05:30 PM aandrew: my son's like DAD DAD DAD DAD A RATTLESNAKE and I'm like "where?" and he says "THERE" and I'm like WHERE?!
05:30 PM aandrew: that continued for a few iterations before he said "AT YOUR FOOT RIGHT IN FRONT OF YOU"
05:30 PM aandrew: it wasn't until I saw it that I heard an actual rattle
05:31 PM aandrew: took a look around behind me and then a slow step backward. dude just wanted to be left alone and I was sure happy to oblige
05:32 PM Tom_L: 1st rule of hacking: if it works, break it so you can fix it again and make it better
05:32 PM Tom_L: aandrew, watch yer step
05:35 PM Tom_L: any of you ever used the github mobile app?
05:38 PM aandrew: I use it occasionally, mostly just to confirm login though
05:38 PM aandrew: Tom_L: yeah for sure, that could have been a much more exciting hike. I'm actually kind of upset with myself over my poor situational awareness
05:40 PM Tom_L: i doubt i could crossbuild a deb on android to rpi4
05:49 PM rue_shop3: my life is a edge of loose tattered ends blowing in the winds of a sandstorm
05:50 PM rue_shop3: wow, glad your ok
05:50 PM aandrew: that sounds like the start of an interesting novel
05:52 PM Tom_L: close your eyes and wait for the dust to settle
05:52 PM Tom_L: rue just has moose to deal with
05:52 PM rue_shop3: first order almost finished, needs serial numbers and invoice
05:53 PM Tom_L: did you fix SN#1?
05:53 PM Tom_L: i forgot but it was a low number
05:54 PM Tom_L: probably a ridiculous idea i had... compiling pyqt6 on android for rpi4
05:56 PM rue_shop3: jun 2024 was the last time I made a sprayer
05:56 PM rue_shop3: this one was #217
06:06 PM rue_shop3: I'd better fix up the 3d printers, I need to make a lot of parts
06:23 PM rue_shop3: there finished the 3x 14" for the 2nd order
06:23 PM rue_shop3: now I'm only behind by 1.2 orders
06:25 PM rue_shop3: I still have 6 heads left
06:25 PM rue_shop3: so I'll be down to 2 after the next order, and the one after that is probbaly just 1 sprayer, but with some repairs, which are probably heads
06:32 PM Tom_L: do the new part designs seem to be holding up better?
06:33 PM Tom_L: like the bend on A9
06:33 PM Tom_L: i forget how you did those previously but do remember changing the cad file
06:46 PM Tom_L: https://cdn.discordapp.com/attachments/1011393674292232244/1353510169698504784/Snapinst.app_video_AQMjAeyvf7Azf5EKwaBNb1R0CizR14BrhGjXL0y1FKfYI8nMf6aq8gWnPaWXPR-DYhrFLfFJxEIMktqA-bY2_8aNWeq-mK6MwJpgvUE.mp4?ex=67e1ea13&is=67e09893&hm=4b9da47cc492a1a6e5ce3e2e8b6bf869719a54ed830e6c2b911ba8d484946f42&
06:54 PM rue_mohr: the head bender is working great, no more manually pounding over tabs
06:55 PM rue_mohr: I had a jig I would clamp the heads in and pound over the tabs with a flat end chisel
07:29 PM Tom_L: http://tom-itx.no-ip.biz:443/~webpage/cnc/probe/probe_adjust.mp4
07:39 PM Tom_L: what i meant was: is the new design not breaking off like it did
07:39 PM Tom_L: iirc that was a failure point
08:19 PM Tom_L: had to change the phone video mp4 setting or it wouldn't show video on the pc
08:19 PM Tom_L: something new to me
08:25 PM rue_mohr: oh that poor guy was horrid at metalergy, we removed two tabs from the design and its been "fine" ever since. The bending itself was never the issue.
08:26 PM rue_mohr: there were 'front tabs' that left a really small amount of metal on it, and the remaining metal would stress-fracture
08:26 PM rue_mohr: all the old heads broke off in the exact same way
08:27 PM Tom_L: i couldn't remember exactly what but knew there was a problem
08:28 PM Tom_L: HEVC opposed to H.264 format
08:28 PM Tom_L: ever hear of that?
08:29 PM Tom_L: 'high efficiency'
08:29 PM rue_mohr: in your video, is that 0.5 thou eccentric?
08:29 PM Tom_L: .0005
08:29 PM rue_mohr: yea
08:29 PM Tom_L: and half of that
08:29 PM rue_mohr: oh, nice
08:29 PM Tom_L: 5 tenths
08:30 PM rue_mohr: so your saying its not 0.5 thou, its half of 5/10 thou
08:30 PM Tom_L: not bad for a cheap chinese probe
08:30 PM Tom_L: something like that yes
08:30 PM rue_mohr: oh, .. you didn't make it
08:30 PM rue_mohr: whats yours?
08:33 PM Tom_L: https://www.amazon.com/dp/B0BDSDSJF6
08:33 PM Tom_L: found some extra tips for it as well
08:33 PM Tom_L: i bent one setting up all those probe routines
08:33 PM Tom_L: 6mm shaft
08:34 PM rue_mohr: aren't they supposed to stop before banding?
08:34 PM Tom_L: i was doing _alot_ of testing
08:34 PM Tom_L: i programmed over 40 subroutines
08:35 PM Tom_L: https://www.youtube.com/watch?v=W8hpXoHmHzk
08:35 PM rue_mohr: its good work!
08:36 PM Tom_L: https://www.youtube.com/watch?v=37HmlA_cjYM
08:37 PM Tom_L: https://www.youtube.com/watch?v=aFIyd-bjOCU
08:40 PM Tom_L: i started doing them in both inch and metric but finally gave up on metric
08:40 PM Tom_L: the routines are close enough anybody can substitute numbers
08:41 PM Tom_L: after it was all said and done i found my old probe
08:42 PM Tom_L: but it wasn't near accurate enough for this
08:42 PM Tom_L: it was sitting right in the tool bin where i parked it