1-Lead EKG Monitor

thingiverse

The AD8232-based EKG breakout board is an affordable option that allows for basic electrocardiograms at a low cost. This device typically comes with leads and pads, making it ideal for initial use but often necessitating additional purchases for subsequent recordings. A simple 3D printed solution can resolve this issue by providing a holder for the EKG leads. To utilize this solution, follow these steps: 1. Print the part. 2. Insert each lead into its designated slot on the top of the device, ensuring that the left and right arm leads are correctly oriented according to their respective colors. 3. Take your measurement by performing the following steps: 3.1. Place the device across your left leg, with the single electrode facing down and in contact with bare skin (if you have hairy legs, consider using an electrolyte pad as described below). 3.2. Place each thumb on its respective electrode located on the top of the device. 3.3. Wait a few seconds for the signal to stabilize before proceeding. If achieving a good reading proves challenging, creating an electrolyte pad can enhance conductivity between your skin and the electrode. This is particularly beneficial for the leg lead but can be applied to all three leads. To create an electrolyte pad: 1. Tear off a small piece of paper towel, fold it several times until it forms a square slightly larger than the metal contact of the electrode. 2. Run the folded paper towels under the sink to thoroughly soak them in water. 3. Sprinkle regular table salt over the pads and allow it to dissolve in the water. 4. Place the pad on your leg above the electrodes or use the water to secure the pad to the 3D printed device.