This video explains the I2C protocol, using DFRobot's Gravity: Digital 1-to-8 I2C Multiplexer to solve address conflicts, enabling communication with multiple same-address I2C devices, as demonstrated in a tomato clock project with listed materials.

This video explains how a capacitive liquid level sensor works, introducing a DIY plant watering device project that uses such a sensor to monitor water tanks, aiding in plant care—especially when away—with listed materials and a tutorial link.

This video introduces DFRobot's GM77 QR Code Scanning Sensor, explaining how it works—it reads barcodes and QR codes at 15m/min, features a small size, high-efficiency recognition, a 0.3MP camera with auxiliary lights, and supports TTL-232 and USB.

This video explains DFRobot's Gravity: Analog pH Sensor/Meter Kit V2, an upgraded pH-measuring tool for solutions, with improved precision, 3.3~5.5V wide voltage support.

This video shares a project to make sports buttons using the Beetle ESP32 - C3 development board, which can be used for testing jump height, reaction speed in "Whac - A - Mole", and other games, with listed materials and a tutorial link.

This video explains the UART protocol, featuring DFRobot's Gravity: UART Fiber Optic Transceiver Module (supporting 2000000 baud and up to 10km distance) used in a weather station project with listed materials like ESP32-E controllers.

This video focuses on the principle of pH calibration, using DFRobot's Gravity: Analog pH Sensor/Meter Kit V2—an upgraded, widely compatible tool for pH measurement in aquaponics, aquaculture, etc.

DFPlayer Pro is a simple, compact yet powerful MP3 player module. It comes with 128MB high-speed storage, supports playback switching via buttons, features dual channels, and is compatible with analog U-disks.

This video explains how an electrochemical oxygen sensor works, focusing on DFRobot's Gravity.

SGP40, like the human nose, reflects indoor VOC changes over time; it features 3.3V~5V power supply, 10S preheat time, I2C communication, 0-500 VOC index, and 18*11.5mm dimension.

This video explains how an electrochemical oxygen sensor works, focusing on DFRobot's Gravity: O2 Sensor—factory-calibrated, supporting analog, I2C, UART outputs, compatible with mainstream controllers, and part of a 12-model gas sensor series.

BMP390L is an industrial-grade digital air pressure sensor developed by Bosch, featuring high temperature stability, low drift, low power consumption, and low noise. With high precision, long-term stability, and a 10-year supply period.

Gravity: I2C Voice Recorder Module EDU by DFRobot is an all-in-one voice interaction module with recording and playback functions, featuring one-button recording, Gravity I2C interface, number synthesis reading, and support for headphone/speaker.

It introduces a project to capture Santa's trail by placing a detector beside the bed to record when Santa approaches and upload the time to IoT, with a tutorial and listed BOM including MindPlus Coding Kit and sensors.

What is HUSKYLENS? HUSKYLENS is an easy-to-use AI camera. It can learn to detect objects, faces, and colors just by clicking. The more it learns, the smarter it is.

Turn ON/OFF, change ambient colors without touching the lamp. Made with Arduino, 3D Gesture Sensor and 3D Printed body.

This content introduces a DIY project to make a private safe for drinks using hardware like FireBeetle ESP32, Gravity I/O Expansion Shield, and sensors, with a link to download the software code.

The Gravity: Digital RGB LED Module is a cascadable single RGB LED module with high-brightness WS2812, compatible with 3.3V/5V controllers and RGB strips, featuring easy setup via standard connectors.

It promotes a Halloween Naughty Pumpkins Access Control System project, listing required materials and offering a $5 coupon for sending "Trick or Treat"; LCD, LED displays and strips are on sale, with 15% off for first orders.

This episode showcases the AD8232 Analog Heart Rate Sensor, explaining ECG functionality with microcontrollers like Arduino, including specs (3.3-6V input, <10mA current) and usage tips.