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  • arvevans commented on punisher_1211's instructable Power Supply From Old PSU2 months ago
    Power Supply From Old PSU

    It is very possible to adjust the +12 volt output to be a more conventional 13.6 volts. The internal regulator circuitry uses 3 resistors, one from 12V, one from 5V connecting to one going to ground. The resistor going to the 12V can be changed slightly so that the 12V output will increase to 13.6. However, this is not all that happens. The internal PWM signal controls both 12V and 5V output. If you raise the +12V the 5V will also be affected.

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  • arvevans commented on tonginos's instructable The 20 $ CNC5 months ago
    The 20 $ CNC

    Needs Part-II video so we can see how the rest is built.

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  • arvevans commented on The Shavingwood Workshop's instructable A Tapering Jig5 months ago
    A Tapering Jig

    Most of the images are missing. We can watch the video and guess at most of this project but it would be nicer if the pictures were still there.

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  • arvevans commented on jimmar57's instructable Building an Acoustic Guitar5 months ago
    Building an Acoustic Guitar

    Many of the images do not show. Have the files been removed? Without the pictures this is pretty much a useless Instructable.

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  • arvevans commented on Hackertje's instructable Arduino Morse Decoder8 months ago
    Arduino Morse Decoder

    Actually there are several commercial providers of laser-beam communications systems. Th ones I installed in San Francisco area in the 1996 era are still being used today with satisfactory service. Key seems to be using dual-beam layout separated by at least 2 meters to avoid the bird blockage situation. Fog that is prevalent in that area does not seem to be a problem. System orientation does have to be observed to avoid sunrise or sunset interference with the light beam. Hams have been experimenting with light-beam communication since the 1960's with some remote transceivers and repeaters being monitored and controlled via optical Ethernet links.

    Serial.print(variable_name); or Serial.print("text string");

    For those who do not have the I2C type liquid crystal display it should be easy to change this to use a standard 1602 style parallel interfaced LCD. Also possible to use Serial.print() to send text information to either the terminal screen that is built into the IDE or to an attached PC running a terminal emulator that is capable of connecting via tty/USB mode.The I2C LCD library is in the zip file and can be installed in your IDE once the file has been unzipped.It makes no difference whether variables are named in German or some other language. The compiler just converts them to numeric tokens and compiles them as defined. An example of this might be the define "int x = 5", where x is neither English or German, or both, and the compiler handles this variable name with n...

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    For those who do not have the I2C type liquid crystal display it should be easy to change this to use a standard 1602 style parallel interfaced LCD. Also possible to use Serial.print() to send text information to either the terminal screen that is built into the IDE or to an attached PC running a terminal emulator that is capable of connecting via tty/USB mode.The I2C LCD library is in the zip file and can be installed in your IDE once the file has been unzipped.It makes no difference whether variables are named in German or some other language. The compiler just converts them to numeric tokens and compiles them as defined. An example of this might be the define "int x = 5", where x is neither English or German, or both, and the compiler handles this variable name with no problem.

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  • arvevans commented on bangnhipham's instructable Book Press From Scratch9 months ago
    Book Press From Scratch

    Cost might be further reduced by using threaded rod in place of the pipe and pipe clamps. This makes it slower to adjust and is a trade-off between efficiency and cost.

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  • How to Build a Circle Cutting Jig for Your Router

    By adding an adjustable cleat (slotted mounting hole(s)) across the bottom this can become an edge-guide for shaping the edges of material with straight or shaped router bits.

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  • arvevans commented on bwayne64's instructable 27 Led Light Mod10 months ago
    27 Led Light Mod

    If you re going so far as to add rechargeable batteries and a charger to this unit, why not add an output jack and use it to power Arduino projects, charge your cell phone, and power other electronic devices.

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  • Growing a Small Kitchen Garden in Your Backyard

    Growing seeds from "hybrid" plants is interesting because you don't really know what the result might be. Sometimes there are highly desirable results and sometimes not so much. Of course this type testing is how some of our more valuable strains have come to be. But try this only if you have room enough to experiment and can live with possible failures.

    Growing seeds from "hybrid" plants is interesting because you don't really know what the result might be. Sometimes there are highly desirable results and sometimes not so much. Of course this type testing is how some of our more valuable strains have come to be. But try this only if you have room enough to experiment and can live with possible failures.

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  • Master a perfect inline wire splice everytime

    Seems that every new generation has to re-invent or rediscover the ancient telephone and telegraph "lineman's splice" that was routinely taught and used in the 1920's era, and probably before that. Still, it is good information for the newbies.

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  • AI on Arduino (learning irrigation station)

    He provided the software as downloadable code.Soil_Moisture_Teachable_1.ino

    He provided the software as downloadable code. Soil_Moisture_Teachable_1.ino

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