Versatile 555 Timer in 4 steps
Électronique / Electronic
Simple LED flasher
You can change the value of C2.
A larger value decreases the flashing frequency and a smaller increases the flashing frequency.
You can also change the value of R1 and R2
Changing the LED for a speaker
LED and Sound
U2 control U1
Make a time limit
When you use the circuit to impose a time limit during a game, hit S2 at the beginning of each person’s turn. So the circuit won’t make its rude noise if a player does move within the allowed time.
Substitution of the 2M potentiometer
With Dual Pot
With Triple potentiometer
With Quad Potentiometer
Resistor substitution box
Resistor Substitution Box Elenco RS-500
|555 Pinout||556 Dual 555 Pinout|
|555 Bloc diagram||558 Quad 555|