 I'm going to give this over to Joel and he'll tell you all about this amazing badge and things to go with it. Thanks Fred. I think you need to unmute me. I am. You can hear me? Hi. Wow. That's great. Hi everyone. I'm Joel Murphy and I got roped into making the badge for the biohacking village this year and it has been really fun so far. I've been learning a lot and the badge is an actual microfluid. This platform is made by a fellow named Urs Gaudens who is a Swiss fellow and I basically just copied it because he did all the heavy lifting and all the work to make it actually work and so it was really easy except for all the parts that went end of life during the time, during the summer that I had to scrounge around and apparently there was some kind of global shortage of capacitors this summer, is anyone ever affected by that? A few people? Crazy. So I want to talk about the badge but I want to talk about myself too. I'm going to shamelessly promote myself. So you may know me or have heard of me because I make OpenBCI. OpenBCI is an open source EEG device. You can measure EEG, EMG and ECG, all the Gs with OpenBCI. They're a low cost, high quality EEG system. Our eight channel system runs for about $500 and a 16 channel system is about $900. We also sell a 3D printed electrode headset with dry electrodes for actually deploying on your head. They're wireless, you know, all ready for ambulatory experiments and this kind of stuff, really popular among PhDs and grad students because we're affordable, people can run their own experiments if they want to. Here's a simple example of the software that we use for measuring brain waves. This is a simple visualizing software, allows you to see the signals and also does recording of the data as well. OpenBCI was started in 2013, well it was started in 2014 but prior to that I was on a government grant funded by DARPA under the Obama Brain Initiative. That's what kick started and launched the whole thing. The work I did for that took it to create OpenBCI, the company. Another thing that I do is pulse sensor. Pulse sensor is an optical heart rate monitor for Arduino. It plugs right into Arduino and analog input and it's designed to hold against your fingertip. That's actually being incorrect, you're supposed to put your finger on the front of the sensor. You see a nice clean heart beat waveform, we've got a bunch of code examples there you see on the left. Make a servo move to your heart beat, make a speaker beep to your heart beat, we've got heart rate variability software as well so that you can do HRV experiments and also breathing feedback, biofeedback experiments as well. That's been going on since 2012. More recently this is the project called Timpin. Timpin is an open source master hearing aid. This is the device that audiologists and engineers use to create their algorithms for helping hearing impaired people. This is work that I'm doing with a team under a five year grant from NIH and NIDCD, National Institute of Deafness and Communication Disorders, and we're a year and a half into our five year grant. We're creating new hardware every year, building on our previous work, trying to make things better, faster, smaller. Hopefully at the end of our run with this grant we'll be able to provide a behind the ear wearable device that is also open source hackable and useful for research and development of hearing aid algorithms. Then open hack is a project that I'm working on with LEAF who's here in the audience and this is an open source Fitbit because we're kind of sick of Fitbits being so closed and you don't get your data so we're working on this project. It's again open source hardware, open source software, we hope to crowd fund it this fall and I'm wearing one if you want to check it out. Bluetooth, heart rate, and steps, step counting, that's it, right, basically. But then you can hack it to do anything you want with it. So OpenDrop v3, this is the Gaudi Labs Microfluidics platform. He's got a web store, he sells these and accessories you can buy directly from him. And essentially what we're doing in order to drive the droplets around on the surface of this platform is we're using a high voltage, so up to 300 volts DC or AC. From what he says DC is good enough for what we're going to try to do this afternoon. By the way, this afternoon at five from five to seven, I'm leading a workshop on the badge, assembling it, putting it all together, showing how to create the hydrophobic surface that we need to do and all that kind of stuff. So let's just get right down to it and look at some videos. I have some audio that I need to unmute. I think I did that okay, right, I got the signal. This is a fun OpenDropper video that Orr has made, cool stuff. So one of the things that you're seeing there, he's able to program the platform. Sorry, I'm going to mute it. You're able to program droplet movement and he's connected to a computer to do that. And so he's created the droplets moving in a big circle. And then he's also able to control the position of one of the droplets with a joystick that's on the board. So it's pretty versatile, pretty crazy stuff. Also, he has feedback, so he's able to tell where the droplet is on the board as well. So that's how he was able to get the, I mean, he didn't cover the audio. The other thing you need to know about the OpenDropper platform is it's a synth. This guy at Worris is really into synthesizers and pheromones and shit like that. So it actually plays the music of the Frogger game. And because he's able to get feedback on the droplet's position, he knows if he gets across the board or if he collides with one of the other things. Because he knows where the blue droplets are and he knows where the green droplets are. So yeah, pretty tight, pretty tight shit. Okay, so the next video is a reservoir test. Now, in that previous video, we were going topless, all right? The droplets were just sitting on the surface with nothing else going on. In this case, what he's got, I'm going to drag this cable over here, is you can see it here. This is a, what is it, TFT glass or a glass that's coated with some sort of a conductive film on one side of it, right? And you can see the wire here, he's grounding that, he's grounding that. One of the things that you need to do is remove any static charge from your droplet in order for it to work. So in this case, he's using what looks like capton tape or something like that to separate the top glass from the hydrophobic surface. So he's got a droplet that's in between there, okay? So this is an example of his reservoir test. Now the reservoirs are the large pads on the right and left of the electrode array. And that's where you store your fluid. And you'll get it as soon as I press the button. I have to unmute, excuse me. Thanks for your patience. That was this, wait a minute. Here we go. So he presses the button and that drags the droplet out of the reservoir. And then he's using the joystick to move it around on the surface. This video has some, I think it's got some audio in it. He's telling you the story about how this software works. Pretty cool stuff. He doesn't have any video examples of any actual science that he's doing with this thing and he's claiming that it's still sort of in this sort of prototyping phase. It's, he's on version three right now. He's pretty much done, I would say. But anyway, that's, I think that's all I have. Thank you.