but you can build your own secure access with an Arduino. Just be warned: this one is a bit more complicated than the others ...

Seeking justice, he put together a guide for an Arduino Dash button aimed at hardware hackers and those who are still easing into the world. For his build, [Carbonette] used an Arduino MKR1000 ...

Instead, he drew up a simple schematic that used an Arduino Nano, an FM radio module based on the TEA5767, and an audio amplifier based on the LM386. A single button on the Arduino helps cycle ...