Hello there!
I’m having trouble making a servo turn the full 180° as advertised. The thing is, that my transmitter/receiver will not send a wide enough PWM signal to it and it turns only 90°.
My question after a lot of searching is, if I could extend this range of movement by purchasing a Servo Motor Controller.
If so, what should I be looking for, that does the job?
Thanks!
Dave
We used to carry a product called a “servo range extender” for exactly your situation, but the manufaturer discontinued it.
Certain RC remotes are “programmable” and allow you to make use of the full PWM range.
https://www.robotshop.com/en/wireless-rc-pwm-servo-controllers.html
Ex (great value) https://www.robotshop.com/en/radiolink-at10ii-24g-12ch-transmittee-r12ds-receiver.html
Ex: https://www.robotshop.com/en/radiolink-t8s-24ghz-8ch-transmitter-r8ef-8ch-receiver.html (configurable via their application)
A normal servo controller which takes signals can do the full 500 to 2500us range.
https://www.robotshop.com/en/servo-controllers.html
I actually have Radiolink AT10II and it doesn’t allow me to send 500 to 2500 us PWM.
Do you know it can be done?
I was only able to extend the range from like 60° to 90° through it.
If I recall correctly, the interface for that remote is in percentage (100% up to 120% etc.). Refer to the guide for details. If you’re at the limit, there’s a chance that the servo you’re using is restricted in motion; it’s rare but it happens that some RC servos are actually limited in angular range even with full 500 to 200us signal.
