Project #29 - DFRobot - RTC - Mk31

A circuit that suits for cold areas, to prevent the frost.

Discover the DIY Digital Oscilloscope: affordable, easy-to-build, and perfect for hobbyists, students, and professionals.And it also very cheap to build it.

This is a small (17.9 mm x 10.3 mm) breakout board for PixArt's PAA3905 optical flow sensor. It provides X-Y velocity at 126 Hz via Optical Flow and 35 x 35 pixel video camera at 18 Hz. There is a well-commented Arduino sketch showing how to use the device for navigation and frame grabbing. The frame grab rate is significantly improved over its predecessor, making for a practical low-resolution still imaging and video camera capability. Power usage is a modest 3.5 mA and the sensor can move in and out of shutdown mode quickly allowing flexible power management. The light level adjustment is automatic (although can still be done manually), streamlining sensor management. The sensor is smaller than its predecessors, with fewer pins making design and assembly easier. Light level sensitivity extends down to 5 lux. The frame grab occurs at a crisp ~15 Hz (56 milliseconds to complete), allowing low-resolution video imaging using the infrared-sensitive sensor element. Open source design!

Project #15: Environment – RTC – Mk26

This is a modern digital interpretation of a traditional barograph that displays real-time atmospheric pressure trends over a 24-hour period using a high-precision BME280 sensor and ESP32 microcontroller.

Applications: air conditioning, central heating, coolers, laboratory, greenhouses, aquariums, ventilation.

A core board for use with a PMW3360 to connect 3V3 for use as a mouse.

Shield for learning.

The Self-Balancing Robot is a two-wheeled mobile robot that uses control theory and sensor feedback to maintain its balance, similar to how humans balance on two legs. It demonstrates fundamental principles of robotics, mechatronics, and control engineering. This project is designed as an educational tool to learn about sensors, actuators, control algorithms, and embedded systems.

A project for automation, hobby and also learning.

Project #30 - UNIHIKER - MEMS - Mk07

Project #15: Environment – GPS – Mk27

This guide describes how to build the XIAO METER demo board, designed to easily test a wide range of sensors using the XIAO SAMD21 by Seeed Studio, the smallest member of the Seeeduino family. The module measures only 20×17.5×3.5mm, and features a Cortex-M0 microcontroller, 11 I/O pins, and supports UART, I2C, and SPI communication. It is fully compatible with the Arduino IDE.

Electricity meter with touchscreen and remote access.

This intriguing but festive Christmas-themed PCB gift card provides a feature-packed home automation interface thanks to its complementary mobile application (Android).