Try PSIM for free: https://powersimtech.com/products/psim/psim-pricing-and-licensing/download-demo/ More information about PSIM: https://powersimtech.com/ Free Altium Designer Trial: https://altium.com/yt/greatscott! Previous video: https://www.youtube.com/watch?v=ktcuBLA3Www Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Instagram: https://www.instagram.com/great.scott.lab/ Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information here: https://www.patreon.com/posts/63950907 Parts list (affiliate links): Resistors: https://s.click.aliexpress.com/e/_dTPpXjt https://amzn.to/3ijSqPe Ceramic Capacitors: https://s.click.aliexpress.com/e/_dU4FEsB https://amzn.to/3Ig8GLH IRL540 MOSFET: https://s.click.aliexpress.com/e/_A2Q9sP TL431 IC: https://s.click.aliexpress.com/e/_AekHjV https://amzn.to/3JlmfuP MCP602 OpAmp: https://s.click.aliexpress.com/e/_dTvJRGw https://amzn.to/3tiHGXS Supercapacitor: https://s.click.aliexpress.com/e/_Agm02X Perfboard: https://s.click.aliexpress.com/e/_dXx2Zv5 https://amzn.to/366Xxjq Trimmer: https://s.click.aliexpress.com/e/_AWiIan https://amzn.to/3JoAYVI You can get the Buy option here (affiliate links): https://amzn.to/3tivs1p https://amzn.to/3CPPUtL In this episode of DIY or Buy we will be having a look at a Fire TV Stick and its problem that you can not really power them with a TVs USB Port. There is a product out there that solves this problem but I think you can build such a circuit better, simpler and cheaper the DIY way. So let's find out how the buy option works and how can we can create a DIY solution with Supercapacitors! Let's get started! Thanks to Powersys for sponsoring this video. 0:00 The power problem of Fire TV Sticks 1:45 Intro 2:45 Fire TV Stick current measurement 3:30 Testing the Buy option 4:00 How does the Buy option work? 5:26 DIY Supercapacitor improvement 6:44 DIY Solution Test/Explain 9:36 DIY Solution Build & Verdict