The delightful David can be found at: 

Twitter: https://twitter.com/shoreydesigns

Instagram: https://www.instagram.com/shoreydesigns/

Patreon: https://www.patreon.com/shorey (remember you can get his Arduino tool here for free just by following him!) 

and here's a couple of links to the Diffraction Grating David used: 

https://www.amazon.com/gp/product/B007G0J1RU/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

https://www.amazon.com/gp/product/B007FZXNL6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

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The wonderful Geeky Faye can be found on: 

YouTube: https://www.youtube.com/geekyfayeart

Twitter: https://twitter.com/geekyfayeart

Instagram: https://www.instagram.com/geekyfayeart

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If you liked this video and want to see more, please support me on Patreon so I can keep making them! 

https://www.patreon.com/BillieRuben

Or you could buy something I've designed: 

https://www.billieruben.info/shop 

And if you have any questions, or you just want to hang out, you can find me here: 

 * Twitter: https://twitter.com/BillieRubenMake

 * Discord: https://discord.gg/WpGdD3f

 * Website: https://www.billieruben.info

 * Patreon: https://www.patreon.com/BillieRuben

 * Twitch: https://www.twitch.tv/billieruben

 * Imgur: https://imgur.com/user/BillieRuben