Problem mit IR Motorsteuerung

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hallo!
habe probleme bei der ansteuerung eines dc getriebemotors über infrarot.
konkret geht es darum einen 24v dc motor über infrarot zu steuern.
habe einen uno r3 mit einem motor shield (velleman vma03), daran ist der ir sensor pin 11 angeschlossen(und natürlich 5v und gnd). ausgang motor shield sind pin2 und pin3 für pwm.
nun zum problem: der motor lässt sich zwar per fernbedienung aus und ein schalten jedoch funktioniert die pwm kontrolle nicht. die "vorspultaste" solllte den motor schneller drehen lassen, und die "zurückspultaste" langsamer. allerdings stoppt der motor sobald der pwm wert unter 245 ist(lt. serial monitor). vielleicht kann mir jemand dabei helfen? ich bedanke mich schon im vorhinein für alle hilfreichen tipps.

bitte stelle deinen sketch direkt hier im forum ein. benutze dazu codetags (</> oben links). anhänge liest kaum jemand.

gruß tommy


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