#avr Logs

Oct 30 2017

01:16 AM day__ is now known as daey
05:49 AM wondiws: hi there
06:26 AM Lambda_Aurigae: hello wondiws
07:15 AM polprog: hi wondiws
03:23 PM nuxil: Hello.
03:30 PM polprog: hi
03:37 PM nuxil: how would i go about making a simple squarewave generator using a atiny85 ? i want to try and hook up a pot meter on AIN0 and adjust a square wave on a output.
03:37 PM nuxil: any tips how i go about doing this ?
03:37 PM polprog: timer interrupt would be the simplest way
03:38 PM polprog: AIN0 controls the timer frequency
03:39 PM enh: Hi everybody
03:39 PM nuxil: so i basically set it up as a pwm with a 50% dudy cycle and let the pot adjust the time interput ?
03:40 PM polprog: im not sure about that
03:40 PM polprog: but probably yes
03:40 PM nuxil: hi enh
03:40 PM polprog: hello enh
03:40 PM enh: My CNC got serious...
03:40 PM polprog: oh
03:40 PM enh: I'm uploading a video to show you.
03:41 PM polprog: cant wait to make one
03:41 PM nuxil: lol. i cant make a simple squar wave generator and you guys talking about making cnc machines o.O
03:41 PM enh: https://www.youtube.com/watch?v=J6KaayEXxHY
03:41 PM polprog: nuxil: we all start somewhere
03:42 PM enh: Tense stuff...
03:42 PM polprog: im keen on learning mechanical aspects of stuff
03:42 PM polprog: enh: rip eyes
03:42 PM nuxil: enh, you made that ?
03:42 PM polprog: what is being cut there?
03:43 PM enh: Rigid paper, used for book covers
03:43 PM enh: I cannot play with the machine any more
03:43 PM polprog: isn't that the yauvc enclosure?
03:43 PM enh: 15W laser module
03:43 PM nuxil: was about to ask that
03:43 PM nuxil: :)
03:43 PM enh: This was an attempt to do a focal test
03:44 PM enh: but it is jus impossible to find focus with full power
03:44 PM polprog: hope it's well ventilated there
03:44 PM enh: It is
03:44 PM nuxil: how much can you cut though? how many mm ?
03:44 PM enh: nuxil: It is a modified shapeoko 2 cnc
03:44 PM enh: nuxil: Apparently I can engrave metal with this module
03:44 PM nuxil: oh..ok
03:44 PM polprog: enh: i know the pain of focusing high power light, even a floppy didnt help when i tried to cut wood with a magnifier on a sunny day ;)
03:45 PM enh: polprog: it is a bit more than a sunny day...
03:45 PM polprog: that was a loong time ago
03:45 PM polprog: i gues..
03:45 PM polprog: i could probably calculate it
03:45 PM enh: I'm afraid now. I have to set up security protocol to use this thing
03:46 PM enh: Sun is 1.7 kW / sq meter
03:46 PM nuxil: lol atleast get some glasses
03:46 PM polprog: id add an enclosure, and a switch that kills the laser beam as soon as the lid is lifted
03:46 PM polprog: open*
03:46 PM enh: sq meter is 100 cm x 100 cm
03:47 PM polprog: yeah, it's way more
03:47 PM enh: I have protection googles
03:47 PM nuxil: sun is 1.7kw per sq meter. ..?
03:47 PM enh: I'll have to, polprog
03:47 PM nuxil: dude. come up here
03:47 PM enh: nope. Sorry.
03:47 PM nuxil: you lucky to get 25milly wats :p
03:47 PM enh: 1367 watts per sq meter
03:48 PM enh: 1.36 kW / 10000 sq cm
03:48 PM polprog: yeah, that's the solar constant
03:48 PM polprog: average power
03:49 PM enh: 130 mw / sq cm
03:49 PM nuxil: not up here :) is like dark 1/2 the year and at summer it isnt that hot either :p
03:49 PM polprog: nuxil: you would be surprised
03:49 PM polprog: where do you live?
03:49 PM enh: 1.3 mW per sq mm
03:50 PM nuxil: polprog, yea. i would like to see data from north norway
03:50 PM enh: I have 15W / sq mm
03:50 PM enh: This is dangerous.
03:51 PM enh: I'll have to use the spindle PWM to control the laser, to find the focus
03:52 PM polprog: if you take precautions its fine i think
03:52 PM polprog: i wonder if i could solder with a laser
03:52 PM enh: I do take. But I'll have to build an enclosure
03:52 PM enh: For sure.
03:53 PM polprog: melt solder paste pad by pad
03:53 PM enh: You probably can melt solder paste
03:57 PM Ameisen: What ABI is libm built with
04:10 PM enh: https://www.ebay.com/itm/5W-Laser-Head-Engraver-Engraving-Module-For-Wood-Marking-Wood-Cutting-with-TTL/401429425529?hash=item5d770eed79:g:dAwAAOSwQcJZ7r13
04:12 PM Ameisen: the picture says 15W
04:12 PM Ameisen: description says 5W
04:12 PM Ameisen: which is it
04:13 PM enh: 15W
04:14 PM enh: I used a siilar link. Mine went of of stock
04:14 PM enh: similar
04:14 PM Ameisen: in the text description they say 5W too
04:14 PM Ameisen: only the picture says 15W
05:37 PM tpw_rules: it's probably 2
11:19 PM rue_mohr: it'll be 5W
11:19 PM rue_mohr: often they grab ANY reasonable picture
11:20 PM rue_mohr: usually, its of something more or better than what they are selling, but the description will usually be right