The FM receiver module is based on the TEA5767 [1, 2] chip. It is a well-known module that could be controlled via the I2C bus. It covers the FM frequency range from 76MHz to 108MHz. At the output, it ...

This book is about using both the Raspberry Pi 4 and the Arduino Uno in PID-based automatic control applications. The book starts with basic theory of the control systems and feedback control. Working ...

[Jose’s] latest project brings an old visual effect toy up to date with digital electronics. Most of us are familiar with inexpensive kaleidoscope toys. Some of us have even built cheap versions of ...

SB Servo motors have been created to offer affordable, powerful and open-source digital servo motors with Torque, Speed, Position Feedback and full 360-degree rotation mode. Early bird pricing starts ...

The magnetic compass has been a crucial navigational tool for around a thousand years or so, perhaps longer. While classical versions still work perfectly well, you can now get digital magnetometers ...

Velodyne introduced the Digital Servo-10 (DS-10) subwoofer, a compact, yet powerful subwoofer that features the same auto-EQ room management technology and comparable performance found in Velodyne's ...

Meggitt Sensing Systems has introduced the Sensorex SX41800 series, a family of high-performance digital RS-485 (MODBUS) servo accelerometers. Meggitt Sensing Systems has introduced the Sensorex ...

We have featured quite a few cool clocks here at Geeky Gadgets, and the latest one is the work of Andrew O’Malley, the DOTKLOK, which is an open-source Arduino digital clock. The DOTKLOK comes with a ...

Here is a useful circuit for Arduino lovers and experimenters. It is a simple digital voltmeter, which can safely measure input dc voltages in 0 to 30V range. The Arduino board can be powered from a ...