CNC LASER

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bonjour
j'ai entrepris de me faire un cnc laser pour couper du papier.
j'ai pris un laser de 500mw oui j'ai vu grand.
tout marche bien sauf que quand je lance la commande gcode
m3 le laser s'allume bien et s'éteint bien en m5 mais la commande
s ne fait pas varier le laser.je veux dire le laser s'allume bien
mais je n'ai pas de puissance. si je mets m3 s255 ou s1000 ou même
s10 000 rien excepté m3 s 000 qui éteint le laser.
j'utilise grbl contrôleur ou l'ide d'arduino
et j'ai testé le logiciel benbox sans succès.
si quelqu'un voit d'où sa peut venir.

je vous joins une photo de mes branchements.



merci

bonjour,
normal, ttl c'est tout ou rien.
lien de la carte controleur?
il faut une sortie pwm


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