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11Instructables194,018Views204CommentsIowa, USA
I'm an aerospace engineer by trade but am interested in astronomy, robotics, CNC machines, Arduinos, you name it.

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  • maewert's instructable Advent Calendar Box's weekly stats: 3 days ago
    • Advent Calendar Box
      284 views
      6 favorites
      3 comments
  • maewert commented on maewert's instructable Advent Calendar Box1 week ago
    Advent Calendar Box

    :-). Unfortunately I mailed one of the boxes I made this year so I can't guarantee they won't open ahead!

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  • maewert commented on keebie81's instructable Binary Game4 weeks ago
    Binary Game

    Very nice instructible. (I didn't find the code for the project, I must have missed it.)Another variation would be to display the user's selections in binary, hex, and decimal useful for teaching binary number system. Another variation may be to see if someone could sequence through all combinations without repeats by switching only one switch at a time ( i.e. a grey code).Just for fun I sketched out a similar circuit using discrete components which really shows why using a microcontroller can replace lots of discrete chips and is more flexible should your requirements change!.Best Wishes

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  • maewert commented on madcow120's instructable Solar Power Bucket2 months ago
    Solar Power Bucket

    I added a 285 watt solar panel to my van with two 6v golf cart batteries to power my Celestron CGE14 telescope. Similar purpose just different choices in the build details. http://www.instructables.com/id/Mobile-Solar-Power-Station/

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  • maewert commented on alinke's instructable The DIY Photobooth with Lighting Control2 months ago
    The DIY Photobooth with Lighting Control

    Mine used the 'booth' part almost exactly like this instructable. The electronics were more like the electronics of http://www.instructables.com/id/Raspberry-Pi-photo...Best Wishes

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  • maewert commented on maewert's instructable Mobile Solar Power Station2 months ago
    Mobile Solar Power Station

    1. You have a hearse. Cool. Hope it is empty.2. What do you currently do with the power you generate? 75 watts could run a fan to cool the back but air conditioners suck too much juice (like 115 v 11 amp with unknown surge) Best Wishes!

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  • maewert commented on madcow120's instructable Solar Power Bucket2 months ago
    Solar Power Bucket

    Nice instructable! I love to see solar projects done well. I do not believe, however, that your single EverStart UH1 battery is providing anything near 220 AH. I believe they have a reserve capacity of 30, making them more like 20 or less AH. I'm also not sure how well they perform when deeply discharged. They are a good quality battery for the money, though, just maybe not designed for deep discharge applications.Best Wishes!

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  • maewert completed the lesson Welcome! in the class Woodworking Class2 months ago
  • maewert commented on maewert's instructable Interfacing Electronic Circuits to Arduinos2 months ago
    Interfacing Electronic Circuits to Arduinos

    Sorry to have missed your question until now. I have no direct knowledge of ARINC 568 (It isn't even available at the ARINC store. Is it very old?). Many of the ARINC standards describe the protocols that are sent over ARINC 429 data bus. If so, then yes. If Arinc 568 is a different data bus then no, it wouldn't.Best Wishes.

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  • maewert commented on maewert's instructable Internet Island2 months ago
    Internet Island

    Thank you. Unfortunately I reused the parts for other projects so I am currently susceptible to an EMP :-(. I'll have to get this system back in the stowed configuration just to be ready!

    Yes! visit https://racheloffline.org/

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  • maewert commented on MertArduino's instructable Arduino: How To Play Guitar with Arduino3 months ago
    Arduino: How To Play Guitar with Arduino

    Nice start!According to the Axis of Awesome you will need 4 chords to play any pop song ;-). So just a little more work and you can play them all!Best Wishes.

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  • maewert commented on hasenbaby's instructable Arduino Device With Zero Standby Power4 months ago
    Arduino Device With Zero Standby Power

    Nice instructible.Your circuit was a little difficult to follow, however. I would have labeled +15v as BATTERY and the +12V as something else such as SWITCHED_BATTERY. As shown it implies that you have several voltage levels and that you connect +15v to +12v.The purpose of Relay #2 is to switch off the power under the command of the microcontroller after it has been turned on via SW3. Wouldn't it be better to power Relay #2 coil from +12V instead of +15V? That way the relay 2 circuitry is powered only after the +12V is enabled thus ensuring it draws no power when not enabled.Best Wishes.

    If you are willing to give up on the SW3 monitor and want to take it one step further and remove all high impedance de-energized paths, I think this would also work.Best WIshes

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  • maewert commented on romanursuhack's instructable How to Unlock Your Car in 30 Seconds4 months ago
    How to Unlock Your Car in 30 Seconds

    Maybe it is not his car!

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  • maewert commented on goldfishrock's instructable Shed 12v Solar Lighting System5 months ago
    Shed 12v Solar Lighting System

    Very nice instructable!I made mine on my van here (http://www.instructables.com/id/Mobile-Solar-Power..., also to be used for camping/astronomy. Lead acid batteries can out gas hydrogen when charging so be sure the vent them properly!Is the battery a deep cycle? You might want a deep cycle battery or you'll want to discharge it only a little bit to give the battery a long life.Back of the napkin calculations: If you want only 50% discharge on your battery then each night you will use at most 17 amp hours. Your 100 watt outputs say 7 amp hours in full sunlight and therefore should replenish the energy used in maybe 3 hours of sunlight. Looks like a good fit for low, winter sun. You'll produce more energy than you can store in the other seasons. You may want to consider adding anothe...see more »Very nice instructable!I made mine on my van here (http://www.instructables.com/id/Mobile-Solar-Power..., also to be used for camping/astronomy. Lead acid batteries can out gas hydrogen when charging so be sure the vent them properly!Is the battery a deep cycle? You might want a deep cycle battery or you'll want to discharge it only a little bit to give the battery a long life.Back of the napkin calculations: If you want only 50% discharge on your battery then each night you will use at most 17 amp hours. Your 100 watt outputs say 7 amp hours in full sunlight and therefore should replenish the energy used in maybe 3 hours of sunlight. Looks like a good fit for low, winter sun. You'll produce more energy than you can store in the other seasons. You may want to consider adding another battery when your pocketbook can take it to be sure you can continue to have lights after three cloudy days.Again, it was a very nice instructable!Thanks!

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