Yes, you can actually make cell phone calls with your Arduino now. The real star of this build is the new GSM Shield library.

If you're sick of using your boring old keys to unlock your door, Make has a guide for using and Arduino to power a lock that you can control with you ...

This kit uses a CD-ROM drive and an Arduino board to build a clever robotic lock. This dude used a bolt to create the project and it's voice activated.

Using a USB-C phone with Power Delivery is ideal here, as it allows the phone to be powered while also communicating with the Arduino over USB. The RemoteXY app is built specifically for this purpose.

Have an ancient cell phone sitting around? Tinkernut shows you how to make use of it by turning it into a smartwatch with an Arduino brain. Using a Nokia 1100, Tinkernut walks you through pulling ...

With this feature, your phone sensors are polled continuously and the data is sent to the Arduino Cloud in real-time.