| This is a device, built around a PIC16F84-04, which activates an output when the correct access code has been entered on a keypad. This code...
| This is a device, built around a PIC16F84-04, which activates an output when the correct access code has been entered on a keypad. This code...
| The construction of the Digital PSU requires extra care and precision. Just like the electronics inside, the mechanical construction and ove...
| A microcontroller board that serves as the foundation for a programming course must be easy to use while still having all the ingredients of...
| Among all the designs for running and flashing light displays we have published over the years — and that’s a respectable number — there is...
| A flashing LED based on a 555 is not likely to win the first prize for originality, but such a circuit continues to be useful for all kinds...
| There are several ICs on the market that are specially designed for charging Lithium-Ion batteries. The LM3647 from National Semiconductor i...
| A special cable known as Interlink or Laplink is usually necessary for a 4-bit direct cable connection between two computers. Using a small...
| In communications receivers and microphone amplifiers for transmitting equipment, there is frequently a need for a narrow, low-frequency ban...
| Nowadays, you do not actually need to build twilight switches yourself, since they can be purchased quite inexpensively. However, if you enj...
| USB ports can be used in many applications in the field of electronics. However, unlike the RS232 interface, devices have not become availab...