In this video, I created a blood oximeter by using the MAX30105 particle sensor to figure out the changes in color of passing blood through my finger and counting the pulse from that. The device uses ...

Although the RTL-SDR is cheap, accessible, and capable enough for many projects, it does have some important limitations. In ...

One of the coolest things about old hi-fi hardware is that it often came with flickety needles that danced with the audio level. You can still buy these if you want, or you can simulate the same ...

Products available for purchase through affiliate links. If you buy something through links on our site, Mashable may earn an affiliate commission. Pornhub isn't blocked in Ohio despite the state's ...