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in Projects Q/A
Posted May 17, 2007
Ebay, DigiKey, Mouser, RS...
Posted May 8, 2007
1.in the below pic is that 5v regulator only?
2.how to connect home limit switches? if we use 3 limit switches for home then overall we need 6 switches. right?
3.i have some 5-6 wire stepper motors from old printers.how to know whats their voltage rating.imean 12v or 24v etc
Posted October 14, 2006
I've posted pics on the first pages of this thread. Is your board working ok? Did you work the software settings out?Nikolas
Posted October 10, 2006
and who program is best for you?
what caind of step motors do u use?
Posted October 9, 2006
TurboCNC. I've tried also Mach2 and CNCplayer. I now downloaded EMC2 and seems like the way to go.
I'm not familiar with KCam, but you might want to select "Pin setup", that's how it's done to all other programs I've seen.Nikolas
Posted September 27, 2006
You got it!
Posted September 26, 2006
[were i connect 5V???????
Posted September 25, 2006
this board use +5v power suply
but i have some step motors whit 5 wires who works on 12 V
Posted September 22, 2006
You won't be able to supply 12 volts to the stepper in this configuration. Just connect to the board. In a configuration where you use 12 volts for the stepper, you usually use a different stepper. Aren't your steppers 5 volt ones? I thought this was the case. In a setup where you would use both the 5 volt and the 12 volt tap of the power supply, you would have your digital circuitry running from the 5 volt source and the motor circuit running from the 12 volt source.MP
in Datasheet/Parts requests
Posted September 7, 2006
I did not find what you seak but, here are my search results.
Posted September 6, 2006
I'm looking for a datasheet or just the pinout of a C60 screen (model LM15SGFNZ07). It might be made by Sharp but I can't confirm that.Thanks
Posted August 5, 2006
hello, i'm making my own CNC mill and i was wondering where the schematics for the UCN5804B motor controller. i saw the schematics but there a litttle scetchy and i was wondering if anyone has pictures of there pc board layout. and i just saw a picture posted on this forum of the bottom of a pc board where he drew i the limit and home switches and i wonder where he got that. thanks ahead
in Theory articles
Posted July 29, 2006
Here is a pic of a power transistor (shiny silver color) bolted to a cast aluminum heatsink (black with many fins for high surface area) with a mica insulator between (white color).This is from the power supply in our Projects Section.
Posted July 23, 2006
in Electronic Projects Design/Ideas
Posted July 18, 2006
I'm building one too for making gas turbine parts. Check this page out. You can live without the timing circuit, just rewind the transformer, add a footswitch and a fuse.This site should be interesting to you, alsoNikolas
Posted July 14, 2006
Naaah, it just seems Greek to me... ;DNikolas
in Sell/Buy electronics - Job offer/requests
Posted June 10, 2006
I'm looking for 17 TFT VGA 640x480 contollers. All I can find online is contollers that can do 640x480 but go up to 1024x768 so they are expensive.I've bought two Digital View ones from ebay for ~45$ over a span of a year but don't want to wait 17 more years for the rest :P .Doesn anybody know a source for such hardware? New old stock or even good condition used ones could do.Thanks,Nikolas
in Service Manuals
Posted May 20, 2006
Ok, small update. I found the PWR SW connection. Shorting pins 1 & 2 powers the system up and holding them for ~10sec turns it off.However it doesn't boot up. So I still need help for the manual (or ideas on what might be wrong). There is a DIP switch on the M/B I can't figure out and I'm not even sure it supports the CPU I installed (I read somewhere that it does).Nikolas
I saved a motherboard from the trip to the dumpster. It's from a HP machine and I can't find no info for it. What puzzles me is the front panel connector. It doesn't have the usual PWR LED, PWR SW, HD LED etc, pin header.There's only a six pin header labeled "FRCNT CABLE". So, does anybody know were I can find the manual or a way to figure how to turn this thing on? I just want the power switch pins, I don't care about the leds. Is there a way to trace it?I know the ATX PS wants pin 14 and 13 shorted to start, should it try to see if any of those is connected to the header?Thanks,Nikolas
Posted May 14, 2006
Hi guysthe s/w im using is TurboCNC & JalaCNC, i also tried changing the states i.e. one phase, step inhibit, half step etc, for some reason it doesnt like it, stalls or vibrates.p.sdo you know if you hav 2 change the step to phase in TurboCNC?Ryan
in Electronics chit chat
Posted May 11, 2006
... and the remote
And then there's the manual for the controls...
Posted May 10, 2006
Hi all, dont know if people still post to this but i need help. I have built the board, tested it and connected it, when in operation the motor is either 1 of 3 things:1: Jumpy and just vibrates2: Has direction but very slow and not much torque3: stationary but with strong holding torqueCould someone please helpThanksRyanp.sWhen i tested it, i tested for signals from the parallel port and the 5V from the power supply, both of which work!
Posted April 25, 2006
Guys, I don't think he asked for a VGA to TV converter. I believe he asks for a way to use a VGA card and a monitor without a PC! He said he needs the complete description of the VGA card i.e. how it works inside in order tho figure out how to control it.Now that seems almost impossible to me and even if you make it work it still isn't a TV tuner, just a video generation system.Nikolas