I purchased one of each of these cheap sensors recently from aliexpress for testing purposes. Compared with the ubiquitous HC-SR04 (*), I liked the idea of having a combined emitter/receiver, i.e.

How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

Chapter 1, page 11 This code is basic but allows the reader to gain insight into key elements for several other projects in this book. It combines two pieces of code that are listed in the examples ...

Abstract: In this letter, a novel soft origami module is proposed to detect multi-directional bending. The module is inspired by the deformability and adaptability of the piezoelectric sensor and ...

This is a maintained version of the original DFRobot_mmWave_Radar library. After more than two years had passed without any commits beyond the initial commit, and issues receiving no attention, I ...

Thermal printing is a non-impact printing method that uses heat to produce images or text on specially coated heat-sensitive paper, known as thermal paper. It prints by passing the thermal paper over ...

Abstract: This paper presents a wireless sensor-brain interface (SBI) system featuring a linked bidirectional neural interface IC and an image sensor IC for animal tracking. The system enables a novel ...