RF T4 Receiver 315MHz separate power supplies needed when controlling a servo

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i have rf t4 receiver (purchased adafruit. https://www.adafruit.com/products/1097) connected arduino controls servo motor.  why works long arduino, powering rf receiver, , servo connected separate power supplies?  once try connect arduino, rf receiver, , servo same power supply reciever begins not work properly.  servo behaves erratically , rf receiver no longer work?  there way run off 1 power supply , still have work properly?  using 1 tiny micro servo no load on power not issue.  there seems sort of interference going on servo motor , rf receiver.  have tested serval different brand servos.  same thing.  please help.

thanks,

any insights in matter?


Arduino Forum > Topics > Home Automation and Networked Objects > RF T4 Receiver 315MHz separate power supplies needed when controlling a servo


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