| Metal seeker |
Metal seeker. |
2.91 |
3,732 |
| 32.768 KHz oscillator |
Generate clock of 32.768 KHz with a common watch crystal. |
2.90 |
1,431 |
| Electric line tester |
Electric line tester with sound alarm. |
2.90 |
1,693 |
| TV RF signal amplifier |
TV RF signal amplifier. |
2.90 |
2,413 |
| Low frequency clock signal source |
Low frequency clock signal source. |
2.90 |
869 |
| CNC driver |
The simplest unipolar motor driver. |
2.90 |
4,479 |
| Generation of square wave signals |
Generation of square wave signals with NE555 (blinking an LED) - 4 schematics. |
2.90 |
1,425 |
| Smart head |
A device that turns itself towards a light source. |
2.90 |
2,442 |
| Voltage level change detector |
Sensivity is in mV. |
2.90 |
1,986 |
| MOS FET oscillator |
Professional version of uncontrolled oscillator with MOS FET. |
2.90 |
1,294 |
| Tilt switch |
Tilt switch like in pinball machine, using NE555. |
2.89 |
1,013 |
| Geiger counter v2 |
Geiger coutner with GM tube. |
2.89 |
1,125 |
| Darkness detector |
Darkness detector with photo resistor and NE555. |
2.89 |
2,768 |
| Event counter |
Event counter with 7 segment display. |
2.89 |
2,205 |
| Electronic thermostat |
Elektronski termostat with a diode. |
2.89 |
5,654 |
