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TeslaFan

Member Since: April 29, 2010

Country: United States

Profile

Role

I am an engineer. I have engineered lots of stuff… currently, I’m doing educational robotics.

Spoken Languages

English.

Programming Languages

Yes. I’m familiar with programming languages.

Heh. So… Two C programmers are sitting at a bus stop. A guy walks up and says in Basic “When does the bus get here?” Well, the two guys don’t understand Basic so they just shrug. So he asks in Pascal. Again the two guys just shrug. Exasperated, he pulls out a stack of cards and a card punch machine and rephrases his request in Cobol. Again the two guys look at him with confusion.

So the poor guy leaves dejected. One of the C programmers turns to the other and says “You know, I always wanted to learn another language.”

The other turns and says “Why? That guy knew 3. He even had that card punching thing! It didn’t help him.”

The moral of the story? Know C.

Universities

These are the what now? Sorry. Never been there. Self taught.

Expertise

Interestingly, my greatest expertise is probably in making pasta dough from eggs and flour, I seriously rock at that! But the real world usefulness is… meh.

Interests

Yes. Boatloads of them. Too numerous to count.

Websites

www.roboticcore.com

  • News - New Product Friday: Actob… | about 4 months ago

    How about a series of kits (Basic bot, motor / armature / bearing set, etc.) and a “group discount” plan where you buy many parts at a discount?

  • News - Caption Contest Winner! | about 6 months ago

    Ok, but how did the coconuts get here? They are not indigenous to Colorado. Surely you’re not implying that they were brought here by small birds, such as Sparrows?

  • News - Caption Contest Winner! | about 6 months ago

    I don’t get it.

  • News - October Caption Contest | about 6 months ago

    Which one of you minions is hiding my cat? I can’t do the new products video without him.

  • News - October Caption Contest | about 6 months ago

    Say… My… Name.

  • News - New Product Friday: Fly b… | about 7 months ago

    I’m glad that you’re glad that it amuses. The process for winning in engineering is to “Fail forward faster”, meaning to screw up… then laugh at yourself while fixing the problem and trying again. Ego has no place in the process.

    Since you knew you had a CG issue before trying the roof flights, you should have mentioned it in the video. Never hide your mistakes… put them in front of god and everybody so we can all learn in an open source way.

  • Product COM-11900 | about 7 months ago

    Well, it’s based on the thermal transfer coefficiency of the wire, the wire’s diameter, the surrounding material the heat has to be transferred to, and the temperature of the surrounding material.

    Unfortunately, titanium and nickel are not known for their ability to transfer heat… not like, say, aluminum and copper. So there’s that.

    Thinner wire cools down faster. surrounding the wire in a material with a high thermal conductivity like water would really speed it up.

    My gut feel? At room temperature, with air around the wire? Probably 2 seconds with the .012 wire, less with the thinner gauge.

    I SO wanna do an experiment. I want to try to make a muscle / joint with 2 complementing pullers that work against each other (Like muscles in the body.) both “muscles” would be made from several individual wires with their high temp memory in the form of a loose spring. Then all the wires are bundled and enclosed in a silicon sleeve that has coolant (water) flowing through it.

    That would be so cool.

  • Product COM-11900 | about 7 months ago

    3 to 7%, depending on the usage, it’s in the datasheet.

    Bear in mind, that is what gets you your full pull strength of 2.83 pounds, you can also use the memory effect to achieve greater pull range, but at much lower strength.

  • News - New Product Friday: Fly b… | about 7 months ago

    Rudder (Or aileron) only control would have worked fine if you had properly balanced the model so it’s center of gravity was 1/3 of the way back from the wing’s leading edge. Also, it would have helped considerably if the wing actually generated any lift.

    All in all, your “My first model plane!” failed miserably, and was a great source of amusement for us. Thanks!

    Try taping a quarter (or 2 of them) to the front, then moving the quarters to balance the model, have the servo do only the rudder (That’s easiest.) and try again. Also, if you recut the fuselage such that the wing slot forces the wing into an airfoil shape, that will help a lot.

    Oh. To add, what was happening in the video was the model was stalling because it was tail heavy.

  • Product COM-11900 | about 7 months ago

    From what I understand, it will change quickly when the current is applied, but can only recover as fast as it can cool down, so there’s your gating factor.

    But yes, a faster change in temperature will cause it to change faster, up to it’s limit. You can increase the rate of increase in temperature with higher current, but some kind of cooling will be needed to speed up the recovery time before it can be flexed again.

No public wish lists :(