In this quick Arduino ... int Relay = 2; int stateRelay = LOW; int stateButton; int previous = LOW; long time = 0; long debounce = 500; int stayON = 5000; //stay on for 5000 ms void setup() { ...

apart from the module only a few external components are needed to build a relay-driver circuit. Yes, there is a chance to realize one simple non-arduino project of a forgetful plant waterer! If you ...

While classical versions still work perfectly well, you can now get digital magnetometers ... to a traditional compass. The output of the device is read by an Arduino Nano, which is hooked up ...