| Many enthusiasts will be using their PCs as data loggers, controllers or as web servers. In these cases it is important that the machine is...
More about Circuit (708)
| One solution for increasing the power of an amplifier running on a low-voltage supply, like a car radio powered from at best 14 V, is to use...
| If you’re short of inputs on your amplifier, but it has an input for a magnetic pickup with RIAA correction, this very simple project will l...
| The compact circuit presented here is perfect for receiving the signals from pulsed fixed-frequency transmitters. Chest straps from several...
| The AC powerline indicator presented here has a complete galvanic isolation from the grid. The indicator is an LED that lights up when a cur...
| This circuit lets you control a pump, to keep the level of water in a cellar below a certain threshold, for example. Power is supplied to th...
| This development board around a 68HCS08DZ60 microcontroller from Freescale aims initially to be a platform for experimenting with the CAN bu...
| This mousetrap is built around a PIC12F683 and uses an infrared transmissive optical sensor that is modulated at a frequency of 38 kHz, so t...
| The author repeatedly needed several different digital signals for testing his circuits, and a simple function generator did not provide a s...
| The thermometer shown here is “micro” not only because it is built around the ATtiny13 microcontroller, but also because it can be built as...