2 Channel Square Rectangular Wave Signal Generator Stepper Motor Driver PWM Pulse Frequency Duty Cycle Adjustable Module

Features:1. Two independent PWM outputs, which can set the frequency and duty cycle respectively;2. Wide frequency range and high precision;3. Serial communication4. Two independent PWM outputs, which can set the frequency and duty cycle respectively;5. The duty ratio ranges from 0 to 100;6. The three frequency ranges share a duty cycle, and all setting parameters are saved after power down.Parameter:1. Working voltage: 5--30V supports micro USB 5.0V power supply;2. Frequency range: 1Hz~150KHz;3. Frequency accuracy: the accuracy in each range is about 2%;4. Signal load capacity: the output current can be around 8--30ma;5. Output amplitude: default 5V V-pp (can be changed by external power supply);6. Ambient temperature: -30~+70C.Parameter Settings:The frequency is divided into 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~99.9KHz3. X.X.X. (three digits have a decimal point): small unit is 1Khz; value range 1KHz~150KHzFrequency display: (example)100 denotes a pulse of PWM output of 100 Hz;54.1 indicates that the PWM outputs a pulse of 54.1 kHz;1.2.4. Indicates PWM output 124KHz pulseThe module has three buttons: Set, Up, Down;1. By short pressing the [Set] key, the display of four parameter values ​​(FR1: PWM1 frequency; dU1: PWM1 duty cycle; FR2: PWM2 frequency; dU2: PWM2 duty cycle), there will be corresponding parameters before switching Nam