#robotics Logs

Nov 14 2012

00:00 NotWorthCr4p or a TIP102
00:00 rue_mohr read this!
00:00 Jak_o_Shadows1 oh, i am
00:00 rue_mohr http://eds.dyndns.org/~ircjunk/tutorials/elex/qwhathow.html
00:00 rue_mohr ^^^ no that
00:00 rue_mohr read that till you understand it
00:01 Jak_o_Shadows1 i've done a little bit on transistors, but i never actually designed anything, just some analyse
00:01 NotWorthCr4p even if i drew a schematic, i have no site to upload it
00:01 rue_mohr READ THAT!
00:01 rue_mohr just do it!
00:01 Jak_o_Shadows1 yeah, raeding
00:01 Jak_o_Shadows1 katsmeow: imagebin? anything/
00:02 rue_mohr when you understand that you will know how to hook up the transistor to turn the fet on and off
00:02 NotWorthCr4p jak, take down my own site because ia m not worth a crap, and then use pastebin? that's sorrta stupid
00:05 rue_mohr "If you sneak up behind him and make a loud sound, he jumps up and hits his head on the cieling. low gravity is great."
00:05 NotWorthCr4p k
00:06 rue_mohr I promised myself last song 3 songs ago
00:06 NotWorthCr4p if i was playing Deano, i'd have shot the record player 30 minutes ago
00:07 NotWorthCr4p i guess that showed my age :-/
00:13 NotWorthCr4p it's midnite, so much for thinking i should share a great pdf of the human/robot hand design
00:18 NotWorthCr4p ...
00:34 Jak_o_Shadows1 The Fet is triggered by voltage, not current. However, the transistor amplifies current. So it's more complicated than i presumed.
00:40 NotWorthCr4p amlified curnet acorst a riseter is amliphide votlaeg
00:41 NotWorthCr4p if you sample the emitter, the xsistor gain is applied to the current thru the device, if you sample the collector the gain is often represented by a voltage gain
00:41 Jak_o_Shadows1 yeah. I just remembered that i have a 4009 hex buffer/converter(inverting). That could easily do it i think.
00:42 Jak_o_Shadows1 but, doing the transistor/resistor idea, lets work out the resistor needed
00:43 NotWorthCr4p won't work, input high on a 4009 is 4v
00:44 NotWorthCr4p do you have 2 transistors and the fet?
00:46 NotWorthCr4p hellO
00:46 Jak_o_Shadows1 yeah, just grabbing em
00:50 NotWorthCr4p http://designerthinking.com/figma.jpg
00:50 NotWorthCr4p wait, that's not right
00:51 NotWorthCr4p try http://designerthinking.com/fetdriver.PNG
00:53 NotWorthCr4p or http://i.yai.bz/Assets/31/402/l_p0020540231.jpg
00:54 NotWorthCr4p gnite
00:56 Jak_o_Shadows1 cya
09:11 rue_mohr 3 72 2 5 29 2 5 7 2 2 5 3 2 5 -79 2 5 87 2 5 -8 2 5 3 2 5 -6 2 5 -8 2 15
09:12 rue_mohr its hello world!
09:21 rue_mohr 3 3 9 1 3 46 9 -1 5 -1 9 1 2 9 -1 11 8 15 < non-self-modifying loop that prints 3 dots
09:25 rue_mohr using one pointer
09:40 chris_99 in what language
17:07 FreezingCold Hmm, looking for a pnematics final project
17:07 FreezingCold anybody want to shoot some ideas?
17:08 Jak_o_Shadows hexapod for a simulator
17:10 FreezingCold uh
17:10 FreezingCold basic pnematic parts. like 3/2 switch, single and double acting cylinders, etc
17:11 k_o_Shadows sh
17:13 FreezingCold hmmm
17:13 FreezingCold something in manufacturing
17:13 FreezingCold seems easy
20:12 Jak_o_Shadows http://jak-o-shadows.users.sourceforge.net/Fetdriver.PNG Better?
20:14 ace4016 An error has been encountered in accessing this page
20:14 ace4016 Error type: 404
20:17 NotWorthCr4p he meant : http://jak-o-shadows.users.sourceforge.net/random/Fetdriver.PNG
20:18 Jak_o_Shadows yeah, that
20:18 NotWorthCr4p r6 isn't necesary
20:20 NotWorthCr4p r1 can be 10k
20:21 NotWorthCr4p for r4, 4k isn't a common value
20:28 Jak_o_Shadows Thanks
20:28 Jak_o_Shadows Would those transistors need to be bulky? Or are small ones fine?
20:29 NotWorthCr4p to-92, or smd is fine, fet gates at low speed do not pull any current
20:30 NotWorthCr4p at high speed, they can pull a *lot* of current tho
20:31 Jak_o_Shadows righto
20:32 NotWorthCr4p i once made an amplifier that drove as much as 3amps into a TO-3 mosfet gate, at which point using a bipolar made more sense
20:33 NotWorthCr4p because driving a gate with 3amps @10v was pricier than driving a base with 3amps @2v
21:15 home so
21:15 home http://robotics.stackexchange.com/
21:15 home Jak_o_Shadows: http://robotics.stackexchange.com/
21:17 NotWorthCr4p is that your site, home?
21:18 home NotWorthCr4p: are you serious?
21:18 NotWorthCr4p yeas
21:18 home NotWorthCr4p: stackexchange is the place to go to, to ask questions
21:18 NotWorthCr4p and you don't own the subdomain forum there?
21:18 home No
21:19 home I have my own site and blog though >.>
21:19 NotWorthCr4p ok, then i can say it: http://robotics.stackexchange.com/questions/416/powering-a-large-number-of-servos is a stupid question
21:19 home but that is another story
21:19 NotWorthCr4p the correct answer is: get any big 6v battery
21:19 home NotWorthCr4p: it may be stupid, but it is still a question, and we learn from questions and mistakes
21:20 home NotWorthCr4p: why don't you reply?
21:20 home NotWorthCr4p: sharing information is what is really awesome, now days :)
21:20 NotWorthCr4p you can get 6v in tiny sizes, sla for desktop invertors, wet cells for golfcarts, forklifts, and 300ft diesel electric sub sizes
21:20 NotWorthCr4p yeas, cept for in here, or anywhere a woman has an opinion
21:21 NotWorthCr4p if 6v is *really* too high (as if i wold care), drop it with one diode to 5.2v and forget it
21:21 home oh, this is kats..sigh
21:21 home rue_mohr: WHAT IDD YOU DO?
21:21 home did*
21:22 NotWorthCr4p yeas, "sigh" = not worth a crap, and you'll disregard the good answer
21:22 home not really
21:22 home I know that if I want 6V to be lowered, I can use a diode...
21:23 home NotWorthCr4p: you should seriously answer the questions on that site, its a great way to get your knowledge out, about the things that you love :)
21:23 home IRC takes a lot of maintaining...
21:23 home I am not too fond of this channel :/
21:23 NotWorthCr4p too many marshmellows and people afraid of pink
21:24 home What I really dislike is the inactivity mostly, compared to other channels...but really
21:25 home NotWorthCr4p: I don't understand why you feel as if you are north worthy
21:25 NotWorthCr4p because i am disregarded
21:25 home I probably have it worse of than you, but I am still hanging on
21:25 home you are regarded...
21:25 home if you don't want to be disregarded, find someone that will p[ay attention to you
21:26 NotWorthCr4p i gave up
21:26 home and how did you give up?
21:27 NotWorthCr4p changed nick, shut down my webpages, stopped contributng, began interrupting
21:31 home do you want to give up?
21:33 NotWorthCr4p no
21:34 TELunus|2 Then don't.
21:45 home NotWorthCr4p: I think you still have the fight left in you
21:46 home NotWorthCr4p: you just need to go to a different pasture..
21:50 tWorthCr4p
21:55 NotWorthCr4p i need a 0.374 drillbit
22:06 rue_mohr is #80 close enough?
22:07 rue_mohr TELunus|2, resembler programming is fun
22:07 rue_mohr 4 3 9 1 3 46 2 6 -1 13 6 15 <-- prints 3 dots
22:08 rue_mohr have to keep the cheat sheet on hand tho
22:09 TELunus|2 Cool. I'd give it a shot but I'm up to my neck in a school project. My team has been working on it since September, and it's due on Friday.
22:09 rue_mohr whats the project?
22:09 TELunus|2 Designing a machine to emboss braile on business cards.
22:09 rue_mohr ah
22:10 rue_mohr impact of spinning bit?
22:10 rue_mohr ^ or
22:11 rue_mohr the language is missing something, I'm still working on it
22:13 TELunus|2 We're using a platter that rotates around, with a fixed rubber roller. The card is resting on pins coming out of the platter. The roller is positoned so that when the pins come around the roller deforms into the spaces around them. Since the card is also in between it is embossed in the process.
22:13 TELunus|2 http://i.imgur.com/n0Djq.png
22:14 TELunus|2 And here's a screenshot of the bearing one of my team mates specked: http://pasteboard.co/N8AzPQV.png
22:14 NotWorthCr4p use a thick paint, that won't sink into the card stock, a epoxy maybe , and inkjet printer sorta thing
22:14 NotWorthCr4p some places can do that for you
22:14 rue_mohr interesting
22:15 rue_mohr TELunus|2, is this a design or a design and build project?
22:15 TELunus|2 I think at this point we're actually using a foam of some sort. Even if it's not going to work it dosn't matter at this point since we don't have to build it, and since the report is due in less than 48 hours.
22:17 TELunus|2 At the moment I'm just going through and putting details like material, finish, drawn by, checked by, on SolidWorks drawings.
22:19 home oh crap
22:19 home SolidWorks :/
22:19 home it saddens me that I have to use either Solidworks or Inventor to do my designs
22:19 home I really want FreeCAD to be a good alternative soon...
22:19 TELunus|2 The bearing in the screenshot dosn't even fit where my team mate said it needs to go.
22:19 TELunus|2 Ya.
22:19 rue_mohr heh
22:20 TELunus|2 I just want something free I can use on Linux.