#garfield Logs

Aug 01 2019

04:12 AM rue_mohr: ok, well, it looks like if I use my large printer, I CAN print the spars for the vacuum table
04:16 AM rue_mohr: so I'v designed it
06:35 PM zhanx: Evening
06:35 PM zhanx: forge restacked so the grating is right
06:36 PM zhanx: just need to get a 1.5" cap tomorrow and I can cement it in
06:37 PM zhanx: got 100 pounds of coal as a gift its anthracite
06:39 PM Tom_L: like a kid on christmas morning
06:39 PM zhanx: like the last 30 years of them
07:52 PM zhanx: rue_mohr, update on the z drive?
10:03 PM rue_shop1: !!!
10:03 PM rue_shop1: I think I know what happened to my 3d printer!!!!
10:04 PM rue_shop1: the new one
10:04 PM rue_shop1: it suddenly stopped responding one day
10:04 PM rue_shop1: and while working on it now I just noticed the avr was getting really hot
10:04 PM rue_shop1: but its not when the driver board and power supply aren't connected
10:04 PM rue_shop1: remember what your motor driver did!???
10:04 PM rue_shop1: I think that just happened to me
10:06 PM rue_shop1: had you been using the 9388 drivers or the 8825?
10:07 PM zhanx: 9388
10:09 PM rue_shop1: k, these are 8825, maybe its the ramps board, all these drivers have 3M between the two supplies
10:10 PM zhanx: mine was the diode being bad on them
10:11 PM rue_shop1: ramps or driver?
10:11 PM zhanx: ramps
10:11 PM zhanx: D1 if i recall rightly
10:15 PM rue_shop1: cant find anything so far
10:17 PM rue_shop1: 8-| 0.8 ohms between Vin and +5V on the ramps
10:17 PM rue_shop1: er, the 2560
10:18 PM rue_shop1: I think the LM1117 failed
10:19 PM Tom_L: mmm
10:19 PM Tom_L: melting plastic. melting metal.
10:20 PM * Tom_L feels a little left out
10:20 PM rue_shop1: I wonder what that blew up
10:20 PM Tom_L: melting silicon
10:20 PM Tom_L: forgot that one :D
10:20 PM rue_shop1: :) ssh
10:21 PM Tom_L: friday can't get here soon enough...
10:21 PM Tom_L: i'll be glad when all this is back where it goes
10:22 PM Tom_L: rue_shop1, imagine if you had to clear out your shop from a disaster...
10:22 PM rue_shop1: that would be the definition of the real disaster
10:22 PM Tom_L: :D
10:22 PM Tom_L: i bet
10:23 PM rue_shop1: cause my shop employs timespace compression
10:23 PM rue_shop1: emptying this shop would require thousands of cubic feet of space
10:24 PM rue_shop1: ok, how do I get avrdude to say just hello to a 2560
10:24 PM Tom_L: shouldn't be much different than the rest
10:25 PM Tom_L: that 128 is one of the odd ones
10:25 PM Tom_L: it has 2 modes
10:25 PM Tom_L: i forget what they are
10:26 PM Tom_L: 128 & 104? maybe
10:26 PM rue_shop1: avrdude -c avrisp2 -P usb -p m2560
10:26 PM rue_shop1: ?
10:26 PM Tom_L: btw, did you ever get a copy of the tech lib?
10:27 PM Tom_L: all the app notes & code etc
10:27 PM rue_shop1: avrdude: Device signature = 0x1e9801 (probably m2560)
10:27 PM rue_shop1: avrdude: safemode: Fuses OK (E:FD, H:D8, L:FF)
10:27 PM rue_shop1: avrdude done. Thank you.
10:27 PM rue_shop1: so it looks like the avr is ok
10:27 PM Tom_L: yup
10:27 PM rue_shop1: tech lib
10:27 PM rue_shop1: ?
10:27 PM Tom_L: http://tom-itx.no-ip.biz:81/~webpage/avr/tech-lib/
10:27 PM Tom_L: just happened to see it there
10:27 PM Tom_L: they discontinued it
10:27 PM rue_shop1: well, so it needs a new usb chip
10:28 PM rue_shop1: whats in the tech lib?
10:28 PM Tom_L: all the app notes and sample code
10:28 PM Tom_L: up to that date
10:28 PM rue_shop1: oo ALL?
10:29 PM Tom_L: up to 2013 when they quit doing it
10:29 PM Tom_L: 6.7G is bound to have something in it
10:29 PM rue_shop1: !! I didn't notice THAT!
10:29 PM rue_shop1: wow
10:30 PM rue_shop1: would downloading that overcook either of our internet plans?
10:30 PM Tom_L: not mine or it wouldn't be there
10:30 PM zhanx: it would mine
10:31 PM rue_shop1: no big networks yet?
10:31 PM rue_shop1: thought they were uspposed to have that in by now
10:31 PM zhanx: 2 weeks now, they had to move it
10:31 PM zhanx: install was today, and now its not
10:37 PM rue_shop1: in the usa things are resolved between parties by sueing right?
10:37 PM Tom_L: or a gun fight
10:37 PM zhanx: in which way?
10:38 PM zhanx: whoa Tom_L the states are not all ST Louis
10:39 PM rue_shop1: well, z, you have a tech company and you have made commitments to customers that you cant fullfill without the internet connection that they were supposed to have installed on <date>
10:39 PM rue_shop1: ?
10:39 PM rue_shop1: just a passing thought
10:39 PM zhanx: yea suing would cost way more than its worth
10:39 PM Tom_L: that sort of thing would take too long to sue over
10:39 PM zhanx: instead I can complain and get a prorated bill for 6 months
10:40 PM rue_shop1: I wonder if the circuit for *these* 2560 boards from china are easily dug up
10:41 PM rue_shop1: according to *this* random schematic, the LM1117, is the ONLY link between those two supplies
10:42 PM Tom_L: https://www.kuongshun-ks.com/uno/uno-board-shield/mega-2560-r3-improved-version-ch340.html
10:43 PM rue_shop1: haha cept that a max 232
10:43 PM rue_shop1: I'll pop off the 1117 and see if the problem clears
10:46 PM rue_shop1: yup
10:46 PM rue_shop1: I'll leave that out
10:46 PM rue_shop1: solder in a few ch340...
10:46 PM rue_shop1: new
10:46 PM rue_shop1: wonder if the 4 motor drivers died :/
11:01 PM zhanx: none of mine did
11:39 PM rue_shop1: ch340 isn't happy, switching to external adpater
11:55 PM zhanx: ok ordered a teensy for a keyboard matrix due to size
11:55 PM zhanx: gonna be able to store strings of commands and hot key them
11:58 PM rue_shop1: kay
11:58 PM rue_shop1: ever worked with the usb hid stuff?
11:58 PM zhanx: that is the plan