-UPDATED- 3 displays 555 timer adjustable frequency

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02:16:05

A counter from there 7-segments displays (instead of two in the previous version) with a basic famous 555 timer (clock). the frequency is controlled by an adjustable resistor (knob) to set the desired speed of counting ( change the wiper position and frequency will change). An issue or improving leave a comment ! 

un compteur a trois afficheures 7 segments (deux afficheurs dans la version précedente ) a base de fameux 555 timer (clock) . la frequence est commandé par une résistance variable (potensiometre) a fin de régler la vitesse désiré (changer la position de l'éguille pour changer la vitesse du compteur).
une question ou une amélioration nésitez pas de commentez ! 

published 11 years ago

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