2-way PWM pulse frequency duty cycle adjustable module (HW0515)

Features :

1. Two-way DU vertical PWM output, which can set the frequency and duty ratio separately;

2.  The three frequency ranges share a duty cycle, and all setting parameters are saved after power down. 

Three Ranges:

1. XXX (no decimal point): The small unit is 1 Hz, and the value ranges from 1 Hz to 999 Hz.

2. XX.X (decimal point is ten): small unit is 0.1Khz; value range is 0.1KHz~99.9KHz

3. X.X.X. (three places have a decimal point): The small unit is 1Khz; the value range is 1KHz~150KHz E.g. Frequency display: 100 means PWM output 100Hz pulse