AwDw
Newbie level 1
This post is about controlling servos using PWM. (using microcontrollers(TIVA LAUNCHPAD,TM4C123GH6PM) and the raspberry pi 2.)
I have created a signal using PWM and the raspberry pi to control the tower pro SG 90.The problem I encountered was that in the datasheet of the servo it says that you need a 5V PWM signal to control it, and my raspbberrypi/tiva can only provide 3.3V on its pins.I tried using the 3.3V pins: I found out that the neutral position(0°) worked well but the +90° and -90°didn´t, they only reached +45°/-45° approximately.
So, do i need to make and extra circuit using OPAMs to "amplify" the output pins or did I do anything wrong?
Link to the servo datasheet: **broken link removed**
I have created a signal using PWM and the raspberry pi to control the tower pro SG 90.The problem I encountered was that in the datasheet of the servo it says that you need a 5V PWM signal to control it, and my raspbberrypi/tiva can only provide 3.3V on its pins.I tried using the 3.3V pins: I found out that the neutral position(0°) worked well but the +90° and -90°didn´t, they only reached +45°/-45° approximately.
So, do i need to make and extra circuit using OPAMs to "amplify" the output pins or did I do anything wrong?
Link to the servo datasheet: **broken link removed**