This Arduino pro mini uses over 600 times less power than a traditional pro mini, using a couple of simple changes which cost around $2 to make. An original 3.3V Arduino Pro Mini uses around 4500 microamps when running the standard blink sketch. By making the changes in this video, you can get this Arduino down to just 7 microamps, while keeping the same functionality. Here's a full write-up on the modifications and results of each test - https://www.the-diy-life.com/making-an-ultra-low-power-arduino-pro/ If you'd like to get a Dcorn microscope - https://amzn.to/3kUma5I Purchase Links (Affiliate) 3.3V Arduino Pro Mini - https://amzn.to/3qowXWX MCP1700 - https://amzn.to/3rEjwnz MCP1702 - https://amzn.to/3buX22J Dremel Versatip - https://amzn.to/3kVndlV Soldering Iron - https://amzn.to/3v4stsb Soldering Helping Hands - https://amzn.to/3qky6is The above parts are affiliate links. By purchasing products through the above links, you’ll be supporting this channel, with no additional cost to you. If you've got any ideas for Raspberry Pi, Arduino, or other Electronics projects or tutorials you'd like to see, let me know in the comments section.