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Thread: Gecko drive
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12th August 2013, 03:11 PM #1
Gecko drive
Ok, so I got my G540, what else do I need to buy to morph my Shark into a Whale?
Every day is better than yesterday
Cheers
SAISAY
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12th August 2013 03:11 PM # ADSGoogle Adsense Advertisement
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12th August 2013, 10:11 PM #2
What else have you got so far?
Ball screws and ball screw mounts?
PSU?
Anything?Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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13th August 2013, 12:09 AM #3SENIOR MEMBER
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Resistors to set the current for your motors, no idea what current the shark motors are running.
Upgrade to a 48VDC PSU (Not a requirement but I've heard of big improvements going from 24VDC) (You'll need to check your motors can handle the voltage)
Wiring? if needed.
An enclosure unless you can use the sharks.
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13th August 2013, 12:11 AM #4
A several amp, 48 volt power supply perhaps?
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13th August 2013, 04:01 PM #5
I have still got the complete Shark just want to use Mach 3 instead of the proprietary control box.
I was told I need a smooth stepper but I have no idea what it is
Got the speed control I won at the BBQ.Every day is better than yesterday
Cheers
SAISAY
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13th August 2013, 04:36 PM #6
A smooth stepper allows you to control your CNC device from a USB port rather than a parallel port; if you've got a pc with a parallel port then you dont need it.
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13th August 2013, 05:08 PM #7
The Shark runs from a USB port, maybe I already have it in there, who knows?
Maybe I just need to replace the proprietary software?Every day is better than yesterday
Cheers
SAISAY
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13th August 2013, 05:17 PM #8
Hi saisay
You don't need a smooth stepper, because you won the G540 from Peter Homann
You don't need a BOB (Break out board), because you won the G540 from Peter Homann
The shark has motors on it. These motors would be controlled by the Gecko which plugs directly in to your computers parallel port. See here
Apart from this, you need a power supply to actually drive the motors. See here
Wires to actually connect things together.
The wiring diagrams for all this can be downloaded here.
Don't forget the current limit resistors. These may have been given to you with the G540 and with any luck, Peter also gave you the DE9 shells as well.
Look at this page as well
Get back to us if you have any further questions
PS I forgot this link too for the wiringBob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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13th August 2013, 05:40 PM #9
If you've got an already functional CNC setup, I'd recommend that you stick with that until you've figured out what you want to do on your CNC, and mastered whatever vector program you use to create (whatever it is you want to do on your cnc).
ie learn all the cnc basics, and think about upgrading when you've identified what you see as shortcomings in the Shark setup.
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13th August 2013, 07:27 PM #10
Mastersplinter
I think I have mastered Aspire4 reasonably well to produce fair quality work.
TheGirlsLighted.jpg
KimFavier.jpg
DoctorEd.jpg
FinishedEyeLight.jpg
I already know all the shortcomings, that's why I have rebuilt it in 20 mm aluminium.
All I want now is to get away from the proprietary power box and use Mach3 instead.
Bob
Thanks for your reply
When I am allowed out of bed in a couple of days I will check out all those links.
I am going to deliver the faulty power supply for the 2040 to Russell when we go to Cairns on Thursday to have the epidural.
Hopefully, I will then be able to straighten up and be as tall as DorothyEvery day is better than yesterday
Cheers
SAISAY
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13th August 2013, 07:33 PM #11
Does this mean that you have been delivered of the babies, or that you are going to have them on Thursday?
Bob Willson
The term 'grammar nazi' was invented to make people, who don't know their grammar, feel OK about being uneducated.
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13th August 2013, 09:11 PM #12
I have great hopes the triplets will be delivered then.
Just found out it is tomorrow, not ThursdayEvery day is better than yesterday
Cheers
SAISAY
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13th August 2013, 09:39 PM #13
With magnetic coils , when you double the voltage ( same amps ) you get four times the power , the voltage is squared in the equations , so it would be well worth updating to a > 7amp 48volt PSU ( if your shark has a 24volt PSU )
The amps are what give you the heat , i think ( dont take this literally ) a gecko can handle 66 volts , with back EMF voltages from switching fast magnetic field introducing voltage spikes , you can only use 1.4x less
The Magnetic field decomposing will introduce a voltage on the wiring ,, 1.4x the voltage that made the magnetic field , so dont go above 48volts
It would only be a dolphin with with a 24volt PSUhow come a 10mm peg dont fit in a 10mm hole
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14th August 2013, 08:29 PM #14
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14th August 2013, 08:47 PM #15
Hi Bob
The triplets were delivered today, at least it looks like it, now for the leftover parts but I am walking tall at the moment
What a day.
Left home for Cairns at 7 am and came back just after 6 pm.
First a visit to the thorasic specialist, he ordered a sleep test.
Then onto the hospital for a CT scan of my hips, a special X-ray of my spine, then a 2 hours wait for the prep and CT guided epidural, finishing with an hour of ops in bed before I was allowed to go home.
We are both exhausted.Every day is better than yesterday
Cheers
SAISAY
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