Learn how to repurpose your spare ESP32 boards into cost-effective presence detection sensors using the Tommy Sense ...

This research is aimed to explore the efficacy and comparison of low-cost light sensor measurements for agricultural applications. For this reason, TSL2561, BH1750, and TEMT6000, low-cost light ...

The sensor continuously sends out infrared light and measures how much of that light is reflected. When a reflective object is within its set detection range, it returns a low signal. The Arduino ...

A cargo-compatible flashing tool and Board Support Package (BSP) for Arduino Uno R4 (WiFi & Minima). Like ravedude, but for ARM Cortex-M4. Over-the-air (OTA) firmware update system for Arduino R4 ...

For some, Halloween is starting to rival Christmas for setting up elaborate holiday decorations. Homeowners now spend many hours─and sometimes dollars─creating ghoulish displays of lit pumpkins, ...

Have you ever wondered how speed guns measure the speed of moving vehicles or how an athlete's sprint speed is recorded? Normally these speed sensors work with radar or laser technology to bounce back ...

Photoelectric sensors detect objects and surface changes using variations in optical properties. Each sensor includes a light emitter and a receiver, with most relying on infrared light. In optical ...

The TCRT5000 sensor is an infrared reflective sensor. This library is written to use with a TCRT5000 breakout's analog output and handle a threshold in software. These breakouts have typical two ...

Abstract: Diabetes management requires effective glucose monitoring, but most current techniques are intrusive, making patients uncomfortable and reducing compliance. This paper presents a ...

Optical metamaterials have fascinated physicists and engineers for decades. While theoretical discussions began in the 1940s, significant experimental progress only occurred in the last 20-30 years, ...