Hi. I’m still a beginner, but I think I can learn enough for this. The number of LEDs (out of about 18 LEDs, unless 12 is a lot easier) that are on, and their color, will indicate how much a ray (that makes an angle, maybe from yaw, from a magnetometer, that is on a sleeve of a dance costume) is pointing towards a location (miles away from the dancer wearing it) that is important to the dancer. The LEDs will be connected to the costume using electronically conduction thread, as a wearable. Though I don’t know whether it is best, someone told me that, because I want to put the costume in a clothes washer and drier, to protect it from water and maybe heat (from the drier), I will need a removable module. The removable part of the module will be kept out of the clothes washer and drier while the rest of the module is in, and be reconnected (to the rest of the module) after the drier is done. But I haven’t been able to find such a removable module. I’ve only found an Adafruit FLORA 9-DOF part that is no longer stocked, and a STEMMA QT 9-DOF part, which I’m guessing won’t withstand the clothes washer and drier, but I’m only guessing.
Is crossposting allowed? This is a little different from what I posted in another company’s forum, a while ago. Thank you.
I couldn’t find the word “magnetometer” or “DoF” (degrees of freedom) at that page.
Is that the least expensive and simplest sewable electronics kit, for a beginner who has no experience with LilyPad, and who only wants to learn enough (and have enough) to do what I described, for now?
I searched using “accel” and accelerometers showed up, so I’m guessing accel stands for accelerometer. Should I look more for one with a magnetometer? I may not understand.
I’d like to eliminate things that seem too good to be true:
What is an example of a removable module?
Will a stackable work? I think those are the boards that usually have both male (on the bottom) and female parts (on the top) around the edge. But maybe the part that stays on the fabric of the costume, while the rest stays out of the washing machine and clothes drier, should only have male parts (because male parts seem, to me, easier to dry than female).
Is my guess, that Qwiic won’t work, correct, even if the male end of the cable is on the fabric?
In the lilypad search I shared there is an accelerometer. Lilypad products are the only washable items that we sell; regular boards/sensors are not
We don’t have your ideal product, but we have enough stuff that you could very likely make it work with a bit of effort…
What is an example of a removable module?
What do you mean, precisely? Most things are removable in my eyes
Will a stackable work? I think those are the boards that usually have both male (on the bottom) and female parts (on the top) around the edge. But maybe the part that stays on the fabric of the costume, while the rest stays out of the washing machine and clothes drier, should only have male parts (because male parts seem, to me, easier to dry than female).
I’m only recommending LilyPad items for this, unless you apply a conformal coating
Is my guess, that Qwiic won’t work, correct?
Correct…unless you hotglue the connections before getting wet and remove/replace each wash cycle?
I think the best way so far is to put a 9-DOF (magnetometer included) board at the bottom of a box and fill the box with epoxy potting, to make it waterproof. I was told making a vacuum chamber might be useful, but I’m not sure where (in the box) to put it, how to make it, or why. Adafruit FLORA sewable threads could be connected to the board, or wires connected to the male end of STEMMA, STEMMA QT, or Qwiic cable; I think. Right now, my biggest problem is with the way the threads will come out of the flat epoxy top. First, I want them to be perpendicular to the top. Second, the distance between any thread and the one it is closest to should be the same as the distance between any other two (that are closer to each other than any others, with the exception of if there is a thread on its other side). How do I do this? Or is there a better way than all of this? Thank you.
I think the first priority should be to be a prototype without regard to washing survivability. It’s a big complication and I’d hate to give up early on the project for flat thread or epoxy reasons. Most costume items aren’t intended to withstand the rigors of machine washing.
That’s used to help suck air bubbles for more complete encapsulation. There are probably also curing and/or drying (thermal?) considerations for some kinds of reactions but mainly bubbles.