| Simple blinker |
Schematics of a simple light blinker. |
2.89 |
2,431 |
| Digital switch |
Switch with 16 relays and only two switches. |
2.89 |
3,771 |
| Conductor seeker |
Conductor seeker with NE567 tone decoder. |
2.89 |
2,384 |
| Dual LED 12V blinker |
Double LED blinker on 12V. |
2.89 |
3,980 |
| Short circuit detector |
Detects open and short circuit conditions. |
2.88 |
3,963 |
| Acustic clap switch |
Control your appliance with a clap of your hands. |
2.88 |
8,016 |
| DTMF decoding and generation |
Generating and decofing DTMF tones with two ICs. |
2.88 |
1,930 |
| Voltage level change detector |
Sensivity is in mV. |
2.88 |
1,990 |
| Temperature controller |
Temperature controller with LM3911. |
2.88 |
3,876 |
| Darkness detector |
Darkness detector with photo resistor and NE555. |
2.88 |
2,768 |
| Strong 12V bulb flasher |
Circuit that blinks 12V car bulbs. |
2.88 |
2,318 |
| Level detector |
Level detector with photo transistor. |
2.88 |
2,294 |
| 1.5V battery powered motor |
A very small fan motor switched on and off by hand torque. |
2.88 |
3,121 |
| Matchless metal locator |
Terrific detector and locator for metal objects with dual NE555. |
2.88 |
3,613 |
| Geiger counter v1 |
Beta and Gamma ray detector with a neon-tube. |
2.87 |
1,962 |
