DIY Heart Rate MonitorIn March 2022, I started building my own heart rate monitor. From programming the sensor, to designing and building the case, here was the process. Heart disease causes 1 in 5 deaths in the U.S., take care of your heart! Brainstorming Everything has to start somewhere… Step 1 Programming the sensor My first time programming something on my own. Step 2 Designing the case Using OpenSCAD and some creativity. Step 4 The final product At last! Step 5