[JonBush] recently did a beautiful build of an Arduino-based fireworks controller ... For example, the power switch only interrupts the ground. It might be safer to disconnect both battery ...

Here, S1 is used as the master power on/off switch while S2 selects the rating of the dummy ... It’s almost been six weeks since I’ve looked at an Arduino-based DC DVM concept, but having designed and ...

You can just leave the power relay on top of the ... is and how long it stays on to signal your Arduino. While great with a fan, this programmable switch you’ve created will work with other ...

When power is turned on, the circuit goes into standby mode ... this “ALERT ACTIVATED” message remains lit until the system is resetted by the “reset” switch in the arduino board. In this way the ...

Comparing the Arduino Uno and the Nano ... It's also a great idea to connect a switch for the battery, so you can turn the power on and off as needed without unplugging the wires.

It uses an Android device to switch an LED driven by the Arduino. Connectivity is provided ... Instead he’s showing off the power of App Inventor to get your Android controls up and running ...