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  • RobertoR23 commented on burningsuntech's instructable Build a TARDIS Nite Lite!3 weeks ago
    Build a TARDIS Nite Lite!

    Surely is possible to reproduce the tardis "Whoooo Whoooo" with an arduino, but i don't think it's possible directly with the board, is necessary to build a small circuit and need more components than a led and a resistor :-)Here you can find an example:https://www.arduino.cc/en/Tutorial/SimpleAudioPlayer

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  • RobertoR23 commented on burningsuntech's instructable Build a TARDIS Nite Lite!1 month ago
    Build a TARDIS Nite Lite!

    You can use arduino to do this, it's a very very simple project and cheap.look at this:https://www.arduino.cc/en/Tutorial/FadeObviously you cannot power arduino with 220v but you must use a 5v power adapter recicled from some old phone or similar ;-)

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  • RobertoR23 completed the lesson Electricity in the class Electronics Class1 month ago
  • DIY 3D Printed Laser Engraver With Approx. 38x29cm Engraving Area

    Very good instructable!!I'm thinking to build one laser cnc for myself, and your project seems to be perfect.I've many of the parts, from a cyclone self made pcb engraver. I got stepper motors, electronics (an Arduino 256 + a 1.4 ramp with stepper motors power units) , psu and so on. I've an anycubic delta 3d printer so i can print my parts.I've to ask a question: I want to use the cnc for cutting wood (3mm mdf) Looking on aliexpress you can find 5,5w laser unit for 100€, and they say that is enough to cut 3mm wood. Speed is not mandatory, so do you think it's enought for cutting?regardsRoberto

    Thanks for you reply!chinese producers are use to declare specifications a little bit oversized than the reality :-) :-)Anyway, I think it's a little short on watt too, but for laser in a single head, without an external glass CO2 tube, the power is at his limit. You can find some head declared for 7W, not a big difference.Using a glass laser tube start to be too complex (and expensive ;-) ) for an home-made cnc I think...When I'll have time to make a test, I'll post my results.R

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  • RobertoR23 commented on JON-A-TRON's instructable 3D Print Finishing4 months ago
    3D Print Finishing

    If you print in ABS, you can use the Acetone method to get a smoot and glossy surface.Looking at Google you can find many sites that explain the method.Basically it's necessary to put the part in a glass jar (not plastic) suspended from below. Place 2 mm of acetone in the jar and close (the part must not be in contact with acetone).Time depends on the quality and dilution of acetone, ABS and temperature, you have to do some testing, but the results will be amazing! I personally test it various times.You could also heat the jar with an electric warmer, it will reduce the time of exposion.

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  • RobertoR23 commented on JohnH641's instructable How to Drive a Manual Car1 year ago
    How to Drive a Manual Car

    I agree with DSBenny, it's funny for a European read this tutorial.But I understand the problem, I've got two cars, one with automatic transmission and one with manual transmission. Every time I change car, i need a couple of minutes to realize how to drive :-) :-)I've to add that when you try to insert the reverse gear, you could find some problem, the gears could "scratch". That's because many cars do not have a synchronizer on the reverse gear, for safety reason. Imagine if you accidentally insert the reverse gear at 70 mph, you can make a puzzle with the gearbox ... :-) :-)For engage the the reverse gear without "scratching" you have to put the gear stick in neutral, release the clutch, and re-press it (obviously with the car stopped and the brake pressed). Now ...

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    I agree with DSBenny, it's funny for a European read this tutorial.But I understand the problem, I've got two cars, one with automatic transmission and one with manual transmission. Every time I change car, i need a couple of minutes to realize how to drive :-) :-)I've to add that when you try to insert the reverse gear, you could find some problem, the gears could "scratch". That's because many cars do not have a synchronizer on the reverse gear, for safety reason. Imagine if you accidentally insert the reverse gear at 70 mph, you can make a puzzle with the gearbox ... :-) :-)For engage the the reverse gear without "scratching" you have to put the gear stick in neutral, release the clutch, and re-press it (obviously with the car stopped and the brake pressed). Now it's safe to insert the reverse gear without noises ;-)

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