4 pwm signals per timer = 16 pwm signals

[khoih-prog]

Originally from 4 pwm signals per timer = 16 pwm signals #2

Hy

If I have seen right in other forums, it is possible to use 4 pwm signals at the same timer. Of course they will have the same frequency. But then it would be possible to controll up to 16 high speed servos with 330 hz.
Is this possible with this library? If not, how can I/you adapt this library to do so?

Thanks a lot
Silvan

[khoih-prog]

Hi @silvan2468

As specified in Features

The PWM_Multi example will demonstrate the usage of multichannel PWM using multiple Hardware Timers. The 4 independent Hardware Timers are used to control 4 different PWM outputs, with totally independent frequencies and dutycycles. You can start, stop, change and restore the settings of any PWM channel on-the-fly.

It's better to use NRF52_ISR_Servo library and Adafruit_nRF52_Arduino core, not with MBED core

From NRF52_ISR_Servo Features

This library enables you to use 1 Hardware PWM module on an nRF52-based board to control up to 16 independent servo motors.

For high speed Servo @ 330Hz, you'd have to modify the library as it's designed for 50Hz SG90-compatible Servo.

I'm sorry I won't spend time to modify the library.