#garfield Logs

Sep 23 2020

02:04 AM polprog: the pcbs are here
06:17 AM Tom_L: rue_bed2, the rubber strip when you tuck it into the slot will tighten it up
06:17 AM Tom_L: they're pretty snug
06:18 AM Tom_L: not tug of war snug but snug
06:18 AM Tom_L: i let the window screen strip tighten them
06:32 AM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/boards/USBTiny_Mkii/silkscreen/screen_bottom.jpg
07:10 AM rue_bed2: ok
07:13 AM Tom_L: i used a roller to push the rubber strip in place
07:14 AM Tom_L: like a pizza cutter only dull
07:30 AM rue_bed2: yep
07:30 AM rue_bed2: I made one for a screen around here somewhere
07:30 AM rue_bed2: washers on a crescent wrench
06:29 PM rue_shop2: the power power goes wink blink wink
06:29 PM rue_shop2: If I wanted other problems I could set up a big wood fired steam engine for power
06:59 PM aandrew: lol
06:59 PM aandrew: Tom_L: how's the e-stop dilemma
07:13 PM Tom_L: working good now
07:13 PM Tom_L: just came in from there
07:13 PM Tom_L: both work as expected
07:14 PM Tom_L: just need to update the wiring chart
07:15 PM Tom_L: last thing is the enables for the stepper & vfd drives but i may wait on that
07:15 PM Tom_L: i _could_ do the stepper drivers
07:46 PM MoonyMoon: rue_shop2: Hey can you set aside all the pieces you find of that radio I droped off, I'm going to use that case for my VGA project
08:46 PM rue_mohr: hu?
08:46 PM rue_mohr: I put all your stuff in the shed
08:46 PM rue_mohr: radio included, I'm pretty sure
08:47 PM rue_mohr: lsof|grep firefox |grep TCP|less
08:47 PM rue_mohr: man, stressed, the light thing sucks, the weather is awefull
08:48 PM rue_mohr: sleeping like crazy
08:49 PM Tom_L: :/
10:11 PM rue_mohr: I need to do the supper machine
10:11 PM rue_mohr: and get that damn cnc on the deck
10:11 PM rue_mohr: :/
10:12 PM rue_mohr: and the ONLY way I can see forward it to have another me
10:12 PM rue_mohr: maybe transition to a robot wont quite go down like I forsee
10:13 PM Tom_L: or look at it from the other end
10:13 PM Tom_L: limiting what you do
10:13 PM rue_mohr: hahahah
10:13 PM rue_mohr: I need to be doing more not less
10:14 PM rue_mohr: more speed or I wont get over the hill
10:14 PM rue_mohr: and I'm behind sched
10:14 PM rue_mohr: where is an Emmit fire log when I need one
10:14 PM Tom_L: i got the estop circuit working
10:15 PM rue_mohr: sweet!
10:15 PM Tom_L: i'll attach it to the enables soon
10:15 PM Tom_L: i could do the steppers tomorrow
10:15 PM Tom_L: i ended up using 2 inputs for estop which is fine
10:16 PM Tom_L: started removing some of the old sherline circuit
10:17 PM rue_mohr: mmm evolution
10:17 PM rue_mohr: my old machine needs some more
10:17 PM rue_mohr: I have to replace the Z motor to a 4/6 wire
10:17 PM rue_mohr: 6 I recon
10:17 PM Tom_L: it's hard locating things that aren't used but still wired
10:19 PM rue_mohr: I'm having a hard time grasping the size of that fpga
10:19 PM Tom_L: i'm in no rush though. still waiting for parts
10:19 PM Tom_L: mine?
10:19 PM rue_mohr: well, the one I have
10:19 PM Tom_L: same one i think
10:19 PM rue_mohr: I dont know how much of a NN I can do on it
10:19 PM Tom_L: they're big
10:19 PM rue_mohr: yea
10:19 PM rue_mohr: thats what a voice is saying in my head
10:20 PM Tom_L: well to give you an idea, mine has 2 configs loaded with fallbacks for each one
10:20 PM rue_mohr: I was pondering a 25*80 8 bit storage array
10:20 PM rue_mohr: like, not using the ram
10:20 PM Tom_L: set a jumper and i'm on another config
10:20 PM rue_mohr: and I was having a hard time selling myself if would hardly take up any of its space
10:21 PM rue_mohr: the horrid final test, where you die if you lose.
10:21 PM rue_mohr: er, fail
10:22 PM rue_mohr: deserves a twilight zone
10:22 PM rue_mohr: or a Dr who I suppose...
10:24 PM rue_mohr: I wonder if I should put a wifi status on my supper machine
10:24 PM rue_mohr: I wonder when my eprom programmer will arrive
10:25 PM Tom_L: from where?
10:26 PM rue_mohr: china
10:26 PM rue_mohr: TL866
10:26 PM rue_mohr: hmm, how do I grow
10:26 PM rue_mohr: there are awkward as all hell transitions
10:28 PM MoonyMoon: rue_mohr: What does the PF matter when ordering a crystal
10:28 PM MoonyMoon: ?
10:28 PM rue_mohr: PF?
10:28 PM Tom_L: capacitor
10:28 PM MoonyMoon: pico farad???
10:28 PM rue_mohr: oh
10:28 PM rue_mohr: yea they all have different load capa
10:28 PM rue_mohr: caps
10:28 PM MoonyMoon: https://www.digikey.ca/en/products/filter/crystals/171?s=N4IgjCBcoGwJxVAYygMwIYBsDOBTANCAPZQDaIALGGABxwDsIAuoQA4AuUIAyuwE4BLAHYBzEAF9CAJjABWAAyIQKSBhwFiZELIAEAWQASAL2ZtOkEAFUhA9gHlUe3OmwBXPrgmSQUrbIC2ABZGOkh8AJ7Y7FjM4kA
10:28 PM rue_mohr: but I dont recall seeing load caps on that schematic
10:28 PM Tom_L: keeps them oscilating correctly
10:29 PM rue_mohr: they just took the crystal right into the controller didn't they?
10:29 PM MoonyMoon: CRYSTAL 5.0000MHZ 20PF TH
10:29 PM Tom_L: some have internal caps yes
10:29 PM rue_mohr: filter...
10:29 PM rue_mohr: ?
10:29 PM Tom_L: for what are we looking?
10:29 PM MoonyMoon: This project : https://www.maccasoft.com/en/electronics/vga-serial-terminal/
10:30 PM rue_mohr: MoonyMoon, got a project
10:30 PM rue_mohr: the author was insane
10:30 PM rue_mohr: and amongst the insanity, used a _5_ Mhz crystal
10:30 PM rue_mohr: MoonyMoon, are there loading caps in the schematic?
10:30 PM rue_mohr: I'm sure I dont remember any
10:30 PM MoonyMoon: leme see
10:31 PM rue_mohr: which you just dont do, cause it makes the crystal unstable
10:31 PM rue_mohr: well...
10:31 PM rue_mohr: unless the controller has some that can be switched on
10:31 PM MoonyMoon: dont look like it
10:31 PM MoonyMoon: he got crystal right between pins
10:31 PM rue_mohr: ugh
10:32 PM rue_mohr: score that up as another thing done wrong...
10:32 PM rue_mohr: sorry, I know you just wanted to get a project and assemble it
10:32 PM MoonyMoon: its cool
10:32 PM rue_mohr: this guy was a total newb
10:33 PM rue_mohr: like, wtf
10:33 PM MoonyMoon: so what do you think I should get on the page link i supplyd
10:33 PM MoonyMoon: ?
10:33 PM rue_mohr: the keyboard and usb were put in parallel...
10:33 PM rue_mohr: oh their both keybaord
10:33 PM rue_mohr: ok
10:34 PM rue_mohr: dont plug in both types of keyboards at once
10:34 PM MoonyMoon: :| cant happen
10:35 PM rue_mohr: I'm php coding :)
10:35 PM MoonyMoon: very good :) can you lend me some advice though?
10:35 PM rue_mohr: get anything, he didn't design it right, any will work equally incorrectly :/
10:36 PM rue_mohr: make sure it a crystal and not a resonator
10:36 PM rue_mohr: get a flat one like he used?
10:36 PM MoonyMoon: that was a long way to a non answer :(
10:36 PM rue_mohr: its not designed right
10:36 PM rue_mohr: it should have loading caps
10:36 PM rue_mohr: and you could just go with the caps for that crystal
10:37 PM rue_mohr: Tom_L, do you recall if any of the avrs have programmable crystal loading caps?
10:38 PM Tom_L: none i know of
10:38 PM Tom_L: i have used resonators
10:38 PM Tom_L: those little ones on the programmer are
10:38 PM Tom_L: iirc
10:39 PM rue_mohr: handry cause, built-in
10:39 PM rue_mohr: crystals are a pain to tune perfectly anyhow
10:40 PM rue_mohr: MoonyMoon, I'm sorry, its true, without the proper information from him (maybe the chip has built in, software selectable loading caps) any answer is just as good
10:40 PM Tom_L: https://www.digikey.com/products/en?keywords=490-1198-1-ND
10:41 PM Tom_L: they've got different frequencies
10:41 PM rue_mohr: :) me too
10:44 PM Tom_L: hopefully next week i'll hear something
10:57 PM rue_mohr: heh
10:58 PM rue_mohr: I have a headphone amp with a gain of like 1000, and I keep dialing the volume up on the mp3 player app
10:58 PM rue_mohr: I made this to kill me for a reason
10:58 PM rue_mohr: but some time I have to dim down the power led more
11:35 PM rue_mohr: I'm tried, but I don't want to go to bed or sleep
11:35 PM rue_mohr: I think I just want to sit here
11:35 PM rue_mohr: and do nothing