# How to set a trim value for a servo to start a 1100 PWM **URL:** \ **Category:** General Discussion\ **Created:** [June 22, 2026, 12:30pm UTC](https://discuss.bluerobotics.com/t/how-to-set-a-trim-value-for-a-servo-to-start-a-1100-pwm/23214 "2026-06-22T12:30:27Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![achat](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@achat](https://discuss.bluerobotics.com/u/achat)\ **Post date:** [June 22, 2026, 12:30pm UTC](https://discuss.bluerobotics.com/t/how-to-set-a-trim-value-for-a-servo-to-start-a-1100-pwm/23214/1 "2026-06-22T12:30:27Z")
Hello, I did buy some underwater servo to tilt a camera on my Bluerov. At startup, the tilt value is 1500. Is it possible to set a 1100 pwm value at startup? I tried changing the SERVO\_12 trim value but I cannot make it work. Kind regards, ---
**Author:** ![tony-white](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/tony-white/32/18385_2.png) [@tony-white](https://discuss.bluerobotics.com/u/tony-white)\ **Post date:** [June 22, 2026, 5:12pm UTC](https://discuss.bluerobotics.com/t/how-to-set-a-trim-value-for-a-servo-to-start-a-1100-pwm/23214/2 "2026-06-22T17:12:18Z")
Hi @achat - What function did you assign to Servo 12? What version of BlueOS / ArduSub are you running? Can you share a screenshot of the right side of the [PWM outputs page?](https://blueos.cloud/docs/latest/usage/advanced/#pwm-outputs) ---
**Author:** ![achat](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@achat](https://discuss.bluerobotics.com/u/achat)\ **Post date:** [June 23, 2026, 7:31am UTC](https://discuss.bluerobotics.com/t/how-to-set-a-trim-value-for-a-servo-to-start-a-1100-pwm/23214/3 "2026-06-23T07:31:42Z")
Hello Tony, Here is the screenshot for the servo on the output 12. I use the latest Ardusub and blueOS. ![image](https://us1.discourse-cdn.com/flex019/uploads/bluerobotics/original/3X/f/8/f8a6b823eb6f1d01967f104fa4431522395190aa.png)