arduino lilypad


Objects like clothes and accessories here are the things you’ll need. You need. Your lily pad your power supply with a triple a battery, your lily pad programmer with a USB cable, some scissors, some conductive thread on a needle and a pair of pliers, to turn a regular LED into one with little coiled leads on the bottom. This is so that it makes them easier to sew and to get started. We’Ll just sew our lily pad to the power supply on this piece of fabric in an embroidery hoop. You don’t have to put an embroidery hoop, but it helps keep the fabric tight. The first thing, we’ll do is sew the lily pad to the power supply, so you’ll notice, here on the left that there’s, a plus and a minus, and these conductive traces are what’s going to connect to the same plus and minus on this little battery holder. So there’s a plus and a minus and unfortunately when we put them next to each other, you can see that the plus and the plus lines up with plus over here and minus goes to minus. So they would be crossing so we’re just going to have to sew on the underside of the fabric for one and the top side of the fabric for the other. This is so that these particular leaves have a really short distance so that we don’t run into any problems with the resistance of the thread leader, SOTA, so it’s, very simple I’ve, not at the end of my conductive thread and I’ll.

Just come up through the fabric and then down through the hole in the board there’s a couple times pretty much till my needle doesn’t fit through the hole anymore because there’s too much thread, and this will be sure that we get a good, strong, mechanical and electrical Connection to that little conductive pad right there. Okay, now that my power lead has been sewn down on the lilypad arduino I’m gon na put my battery holder right next to it and I’m just gon na go up across the back of the fabric, so my thread still attached and I’m just gon na go Straight for that other pad, plus the plus and minus to minus now that I’m done sewing the positive end of the battery laid down I’m going to tie off a thread and cut it on the back now, I’ll tell another knot, and so the negative lead now I’Ve got to make sure that when I connect this negative to this negative that I don’t touch either of these or the thread that’s on the back so I’m going to cut straight over and then start stitching into my ground lead of the lily pad all right. Now I’ll do the same thing: I’ll tie it off in the back and cut the thread. The reason I’m cutting it so short is so that it doesn’t have a tail to flap around and fray and then intersect with these connections, because we don’t want them to touch, because that would cause a short circuit and then we wouldn’t have any power.

Okay, all right, I tacked this side down and then I went ahead and also tacked on the other side of my lily pad, because I know I won’t be using that pin later, and the next step is very satisfying. You get to see if what you just sowed, actually powers up your Arduino it’s, pretty fun, take your triple a battery, stick plus two plus and minus 2 minus and then go ahead and flip it on. You should see a red light on your power supply, and then you should see some kind of blinking light over here. On the end, we know, depending on what, if it has the default program on it, it should just blink cool huh all right. Now we get to actually add some of our own components and then I’ll show you how to write some of your own software, for it so go ahead and turn it off. You can remove the battery and then now I’m going to sew an LED I’m going to I’ve already coiled. The leads that I can sell the thing I’m going to pick one of my digital output pins. That could be two three four, five, six, seven, eight nine. All the way, through 13 doesn’t really matter, then we’re going to tie it to ground so I’m going to go ahead and pick one of the pins up here. Just so that I don’t have to worry about crossing over this power path.

Again and now. Leds are polar, has a plus side and a minus side. The plus side is the longer lead and I’ve coiled that into a square and the ground lead I’ve curled into a circle I’m going to tie another knot in my conductive thread I’m, going to show my like D. On the same way, I sewed the other things on just by coiling around the metal part you got to watch out for this stuff. It likes to stick on everything and get really twisted. Okay, now that it’s securely fastened I’m gon na stitch a line to one of the pins and then in the program that we write will tell it to direct electricity through this pin, which we’ll use number two, and that will light up the LED in whatever pattern. We choose okay same deal: I’m, just gon na tie a knot in the back and cut it off. Okay, now that I’ve sewn the positive lead to the Arduino I’m gon na sew, the ground lead to ground the minus side right along here. Now that the circuit is also it’s time to put a program on the Arduino microcontroller on the lily pad, that will tell the LED to light up in a certain interval. So I’ve installed the Arduino development environment on my computer and follow the instructions for installing it. On the Arduino website – and I wrote a little sample program that you can download in the blog post to to get us started, but let’s go through what the program is actually going to do here we are inside the Arduino development, environment and I’m, just gon na Go through what the code that I’ve written here is actually going to do so up top at the beginning or in any point in the Arduino code, if you use an asterisk with a slash in for multi lines or these double slashes here, anything in gray is A comment – and that means that it’s for humans to read not for the computer, to read it’s just for a reference to help.

You understand what the code is doing and then here’s a little intro. And then each line is a comment saying what it does. So then, in every Arduino program you, the first thing you have is the setup routine and that just is a piece of code that’s only going to run once and then after that, you have the loop and that’s something that’s going to run over and over and Over again until there’s no more power left, this is how every Arduino program is. Every basic Arduino program is formatted, so inside this setup, I’m using the function, that’s built into Arduino called pin mode and I’m telling it, but I want to make pin to an output. Pin and that just gets it ready to send a signal out to the LED that’s attached to it and then inside the loop. All I do is I use this function called digital write that is also built in, and that just says, send five volts, which is what the digital pins are capable of out to, pin to and that’s high highest five volts and low is no volts. So digital write to pin to high means I’m going to turn the LED on and give it power and then I’m going to wait I’m going to continue to give it power and wait for 1000 milliseconds, which is one second Arduino counts in milliseconds and then I’m Going to send another digital write signal out, but this time I’m going to set, pin to low, which means I’m going to turn the LED off and then I’m going to wait one more second, so on one second off one second and then once it reaches the End of the loop indicated by this little curly, brace here it goes back to the beginning and it executes this portion of code over and over and over again for as long as you have the Arduino on.

So this is the simple program that we’ll use to blink that LED now that we’ve got the program upset. We just need to put it on the Arduino microcontroller on the lilypad board, so that’s. What the programmer is for and just plug it into your computer on a USB cable and then plug it into the Eric. You know with the chip facing the same direction as the lilypad chip is facing and it’ll power. Your board you’ll notice a little bit light on the battery pack, will turn on, even if the switches off that’s because it’s getting power over the USB and now it’s time to get them talking to each other. So the first thing you need to do is make sure that the Arduino software knows which serial port to send the data out of your computer had lots of serial ports and Bluetooth devices communicate over an emulated surreal. So we just need to pick the right one and it’s right in the Arduino program under the Tools. Menu just go down to serial port and then select, whichever one says, USB serial and then a long string of numbers and letters as opposed to any of the ones that say, Bluetooth or modem and that’ll be that’ll. Be your little programmer board. It has a unique identifying number and says that USB serial string there, okay and then we also want to make sure that we have the right board selected so also under the Tools menu is the board selection.

And then you just pick lilypad, because the other are Dino boards run at a different speed than the lilypad want to make sure the program is running at the right speed and then we have to send out the information so that’s. What the upload button is for and in order to get them talking, you have to have the lilypad board listening to the program that’s coming in and when it listens, is right after it resets so there’s a little button on the lily pad, and when you press It you probably notice that when you let go the little LED on board blinks a couple times, and that means that it rebooted and right after it reboots just for a little a couple seconds. It listens for a new program and we need to send the information to it during those couple of seconds so it’s a little bit of a tricky timing issue. Sometimes it won’t work just give it a couple: tries and you’ll get it. It’Ll vary based on what computer you use so I’m going to hold down. I found that on this computer I have to hold down the reset button and then press the upload button wait a full second and then let go of the reset button, but often times you’ll press the reset button, let it go and then press the upload button. Okay, so I hold down the reset button, then press the upload button in the software and wait a full second, a second and a half.

And I let go. You can tell in its programming when the lights blink in rapid rapid succession, the green light and the red light on the programmer and it didn’t work this time and you’ll see. I got an error in the software that’s. Ok, just try again there we go that’s going so you blinking and then Lou it’s running our program, which just told it to blink this light. One second on one second off so now, it’s still powered over the USB cable. We can just unplug the programmer. It’Ll turn off that’s, okay, plug in the battery flip, the on switch, and we got the same program running and it’ll just run on battery power until there’s not enough battery to power it anymore, and there you have it our own blinking, lilypad, arduino electronic fabric.


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Arduino Lilypad USB pinout
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@AndyTWoods I’ve wanted to do a clothes hackathon for a while now! Wearables like Arduino Lilypad, but also just making pockets in stuff.

Wearables – FWDA

Wearables – FWDA



Originally posted 2015-12-03 15:17:07.

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Comment (23)

  1. Great, thank you very much for this great video. I will try to follow your steps with my daughter and saw a cool  arduino LED bag.

  2. @kity Llila I cant leave a link here but Adafruit sells it and Aliexpress sells it. At Aliexpress search for “5 meter Lilipad supporting conductive thread”

  3. does anyone know where i can get just that battery power supply component? i have a different one but i like the arduino one better, it will fit on my device a lot easier than the one im using


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