This will be easy with our PWM signal controller.
Please have a look at https://botshop.co.za/products/pwm-signal-generator-with-screen?_pos=1&_psq=pwm++signal&_ss=e&_v=1.0

To adjust the PWM Signal Generator + Screen using the push button, follow these steps:

1. Frequency Adjustment:
   • Press the button once to enter the frequency adjustment mode.
   • The display will show the current frequency value.
   • Use the button to increase or decrease the frequency as needed.
   • Press the button again to confirm the new frequency setting.
2. Duty Cycle Adjustment:
   • Press the button twice to enter the duty cycle adjustment mode.
   • The display will show the current duty cycle percentage.
   • Use the button to increase or decrease the duty cycle.
   • Press the button again to confirm the new duty cycle setting.
3. Exit Adjustment Mode:
   • Press and hold the button for a few seconds to exit the adjustment mode.
   • The device will return to normal operation with the updated settings.

 Happy experimenting! 

The PWM Signal Generator + Screen is a versatile electronic device designed to generate square wave signals for various applications. Here are the key specifications:

• Operating Voltage: 3.3 - 30 VDC
• Frequency Range: 1 Hz – 150 KHz
• Frequency Accuracy: Approximately 2% in each range
• Signal Load Capacity: 5 - 30 mA
• Output Amplitude: PWM amplitude equal to the supply voltage
• Operating Temperature: -20°C to +70°C
• Dimensions: 52 x 32 x 10 mm