/tag-en/detektor
| Title | Short description |
|---|---|
| Crystal radio receiver v2 | Radio receiver without power supply. |
| Darkness detector | Darkness detector with photo resistor and NE555. |
| GSM phone ring detection | This device will blink LED just before GSM phone will ring. |
| GSM sniffer | Locate a GSM phone. |
| Heat detector using NE555 and diode | Heat detector using NE555 and a diode. |
| Lie detector v1 | Very simple lie detector. |
| Metal detector | Another metal detector. |
| Rain detector | Rain or water detector. |
| Short circuit detector | Detects open and short circuit conditions. |
