Color sensing (as well as detecting empty spaces) settled on IR-based sensors commonly used ... especially now that 3D printing is common. We love clock hacks, so if you ever create or run across ...

but having a way to communicate with an $11 IR temperature sensor might come in handy someday. You do have to mash the measurement button down, so [CCrome] used the 3D printer to make a clamp for ...

In fact, the original Nintendo Switch has an IR sensor of its own, but only on the right Joy-Con controller. However, leaks appear to suggest that this time around, each Joy-Con has a sensor of ...