#garfield Logs

Aug 17 2021

04:32 AM polprog: Tom_L: i never programmed vhdl
04:40 AM polprog: rue_shop3: yeah, didt you see it?
06:19 PM polprog: strange 8051 issues
06:19 PM Tom_L: what target was that meant for?
06:19 PM polprog: huh?
06:20 PM polprog: i found a board with an 80c552 and im trying to make it do things
06:20 PM polprog: i cant get it's uart to work
06:20 PM Tom_L: the sim for the fpga
06:20 PM polprog: ah, thats a different project
06:20 PM Tom_L: i'm afraid the io would conflict with my board since it's got 'stuff' on it
06:20 PM polprog: also 8051, i took a softcore someone wrote and im writing my own peripherals
07:10 PM Tom_itx: polprog, my board if you're interested: https://www.ebay.com/itm/114807858644
07:10 PM Tom_itx: for a long time i was unable to find it after i got mine
07:10 PM Tom_itx: they went up some since then
07:11 PM rue_mohr: ...
07:11 PM rue_mohr: but...
07:11 PM polprog: cool
07:12 PM rue_mohr: its just a softcore, how would io be in the way?
07:12 PM polprog: I got the uart working on the printer
07:12 PM Tom_L: nice
07:12 PM polprog: rue_shop3: i have to write it :)
07:12 PM polprog: i can make my own peripherals and thats super coo
07:12 PM polprog: i can make my own peripherals and thats super cool
07:13 PM Tom_L: considering bare boards are nearly as much i thought it was a decent deal
07:15 PM polprog: its nice to have one, ill think about it
07:15 PM Tom_L: came with lots of examples i posted
07:16 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/xilinx/New_Board/
07:16 PM Tom_L: EX1--9
07:20 PM Tom_L: rue_mohr, you get the pillow blocks bored out?
07:26 PM rue_mohr: .. yes
07:26 PM rue_mohr: I posted the pic didn' I?
07:26 PM Tom_L: the fixed shallow bore?
07:27 PM rue_mohr: no
07:27 PM rue_mohr: didn't bother
07:27 PM Tom_L: hmm
07:27 PM rue_mohr: it would take me an hour to not get aligned right
07:27 PM rue_mohr: not worried about it
07:27 PM rue_mohr: I pushed the bearings in
07:27 PM Tom_L: snug?
07:28 PM rue_mohr: some much more than others
07:28 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200655.jpg
07:28 PM Tom_L: the blocks look plenty beefy
07:29 PM Tom_L: you did add holes
07:29 PM rue_mohr: yup, their 'done'
07:29 PM rue_mohr: I have to make the adapters for the tubes now
07:29 PM rue_mohr: they will probably be split
07:30 PM Tom_L: how much gap?
07:30 PM rue_mohr: http://ruemohr.org/~ircjunk/tempimage/p1200651.jpg
07:30 PM rue_mohr: gap?
07:30 PM Tom_L: shimstock wouldn't work would it?
07:30 PM rue_mohr: hmm
07:30 PM Tom_L: bet the tube and bearing
07:30 PM rue_mohr: hah no
07:30 PM rue_mohr: its like half an inch
07:30 PM Tom_L: oh
07:31 PM rue_mohr: remember the bearings were selected to "just be larger" than the tube and "be available and cheap"
07:31 PM Tom_L: and local no less
07:31 PM rue_mohr: everything else gets fixed up in post production :)
07:32 PM rue_mohr: I was thinking I should have just done them in wood, got the machine running,and had it cut a proper set of parts
07:33 PM Tom_L: i thought about that on mine but then i also thought i'd have to take it all apart again and that didn't excite me much
07:33 PM rue_mohr: yea
07:33 PM Tom_L: and it's working good enough for me
07:34 PM Tom_L: you won't want to store it out in the weather when you finish it though
07:34 PM rue_mohr: hah, it has to be
07:35 PM Tom_L: it'll all rust
07:35 PM Tom_L: or delaminate the wood parts
07:35 PM rue_mohr: didn't notice thats galvanized pipe..
07:35 PM rue_mohr: its under cover
07:35 PM Tom_L: bearings aren't
07:35 PM rue_mohr: yea, their sealed tho
07:35 PM Tom_L: chain..
07:35 PM rue_mohr: grease
07:36 PM Tom_L: get that sticky stuff they use on motorcycles
07:36 PM Tom_L: you got Y figured out?
07:36 PM rue_mohr: not really
07:37 PM rue_mohr: I'm having an awakeness problem
07:37 PM rue_mohr: its quite frustrating
07:37 PM rue_mohr: I still have an issue with dc servo backlash
07:37 PM rue_mohr: I really think opposing drives is the answer
07:38 PM rue_mohr: at any moment one can be a tensioner and the other a feeder
07:39 PM Tom_L: as long as it doesn't make the drivers run hot
07:39 PM rue_mohr: pwm fet
07:39 PM rue_mohr: on/off, 300Hz?
07:40 PM rue_mohr: so, after last night I want a bypass switch for my ups
07:40 PM Tom_L: what happened?
07:41 PM rue_mohr: at about 1am, it started picking up low votlage events
07:41 PM rue_mohr: from what I can tell, about 30 or 40 of them
07:41 PM rue_mohr: I'v removed the beeper
07:42 PM rue_mohr: but the transfer relay kept clicking back and forth
07:42 PM rue_mohr: it freaked out the cats at first
07:42 PM rue_mohr: then they decided they didn't care
07:42 PM rue_mohr: but I was lying in bed... 8-|
07:42 PM Tom_L: heh
07:43 PM rue_mohr: thinking about the power supply on my computer with the PFC, and all sorts of mauled sine waves chopped up by a relay
07:43 PM rue_mohr: waiting for someone to get out of step and cause a bang
07:47 PM rue_mohr: huh, if I set up the drafting table I could pass out on it
07:47 PM rue_mohr: while drawing
07:48 PM Tom_L: scatter a few random thumbtacks across it
08:34 PM polprog: https://cdn.discordapp.com/attachments/771800691273760778/877359920847134760/IMG_20210818_031339.jpg
08:34 PM polprog: strangely the uart works very rarely
08:35 PM polprog: the led blinks, so the program is running, but there is no data on the tx line
08:35 PM polprog: no idea why
08:38 PM polprog: goodnight
08:54 PM aandrew: polprog: I think your board got hacked
09:27 PM rue_mohr: rue need sleep
09:29 PM Tom_L: heh
09:29 PM aandrew: so go to bed
09:29 PM Tom_L: spent half of mine on the road
09:31 PM aandrew: today I spent all day out of the house with the boys
09:31 PM aandrew: I'd bought a couple cheap RC cars and spare batteries and they ended up being quite good for being so cheap
09:31 PM aandrew: no proportional anything but that didnt' stop them from having a blast
09:52 PM rue_mohr: :)
10:24 PM aandrew: https://www.princessauto.com/en/rc-high-speed-electric-drift-car/product/PA0008930612
10:24 PM aandrew: they were on for $20 when I got 'em
10:24 PM aandrew: and like 4x 2500mAh 7.2V NiMH packs too
11:48 PM rue_mohr: wow
11:49 PM rue_mohr: oh NiMh
11:49 PM rue_mohr: thought you said Li