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GreekPIC
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More info here:http://www.dakeng.com/relay.htm, in th TurboCNC site.
I have no experienc with KellyCAM, but in TurboCNC in the hardware setup menu you can configure what every pin of the printer port does (step/dir for steppers, home switches, relays etc). Connect the circuit to an unused pin and configure it as the coolant pump in the menu. When the program reads M8 or M9 commands it will make the pin high or low accordingly.
You will also need a splash guard and a way to collect the coolant, filter it and pump it again. -
Thanks, I'll check those out
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Alberto, the cutting fluid is usually a 8-10% synthetic oil in water (ISO 220 or other water soluble synthetic oil).
You can use a pump operated by a relay connected to a unused pin in the parallel port (from what I see pins 5,14,16,17 are free) and configure your software to activate this pin when the g-code program you are running contains a M8 command. Similarly it should turn it off when reading a M9.
Using the home switches is not a good idea, because if the program calls for a tool change (M6) you are in for a shower...
Of course you could and should have a manuall override, but having the software control the pump is way cooler... -
Anodizing doesn't affect heat efficiency. It makes the sink's surface harder and provides a means of adding colour without painting (and loosing efficiency)
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Very good page on anodizing here: http://www.focuser.com/atm/anodize/anodize.html
Actually I plan to make the 30V-3A PSU (http://www.electronics-lab.com/projects/power/003/index.html)to use in anodising. -
Novice PIC microcontroller user...
I've only programmed one PIC. But I want more! -
It looks interesting, can you post the schematic?
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Another vote for anodizing. It can be done at home, it makes the surface harder and you can use lots of colors.
If you worry about conductivity be shure to drill and tap the holes for connectors and components after anodizing (the oxide layer created during the anodizing proccess isn't conductive). -
I would like to interface an mp3 player to the CD changer bus of a car stereo. For the time being I'm using a portable mp3 player with a casette adaptor. I would like to be able to use a player with a huge hard drive and keep out of the way.
I found a this site (http://www.k9spud.com/vwcdpic/) about interfacing all kinds of audio devices to a Volkswagen's OEM head unit. Especially a player (http://www.pjrc.com/mp3/) which can be controlled from the head's buttons.
Now, I'm willing to buy a new car stereo that is easy to interface, but there is no way I'm gonna buy a VW just to experiment. So, does anybody have any info on any brand CD changer connections (pinouts etc)? -
I just registered and thought I should introduce myself.
I'm Nikolas from Athens, Hellas (Greece) I'm a Mechanical Engineer and a newbie in electronics. I find them very interesting, though and I'm seriously thinking of going for a second degree on that.
Hope I can pick your brains from time to time...
3-Axis Stepper Controller
in Projects Q/A
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Even better, thanks! What type of diode would be ok?