**ECG Arduino shield**
it is the electrical activities of the heart. During each heartbeat, a healthy heart has an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibe...
Time based control for drip irrigation system, with 16x2 LCD (HD44780) for status and configuration.
I designed the board single sided for easy etching at home.
Originaly created using Eagle, and then imported to EasyEDA.