VHM-800 PWM Signal Generator Circuit

This device generates a square wave signal for experimental development involving PWM speed control (e.g. motor drivers) and other microcontroller uses. has the ability. Serial Protocol can be controlled via TTL (TXD and RXD pins). It is stable, reliable and very simple to use.

Technical Specifications:

Operating Voltage: 3.3 - 30 VDC
Frequency Range: 1Hz - 150 KHz
Frequency Accuracy: Accuracy in each range is approximately 2%
Signal Load Capacity: 5 - 30 mA
Output Amplitude: PWM Amplitude Equal to Supply Voltage
Operating Temperature: -20 - +70 Celsius
Dimensions: 52 x 32 x 10 mm

Communication Standard:

9600 bps Data bits: 8
Stop bit: 1
Check digit: none
Flow control: none
Serial communication

1) Adjusting the frequency of PWM:

Command "F101": Set the frequency to 101 HZ (001 to 999)

"F1.05" command: set frequency of 1.05 KHZ (1.00 ~ 9.99)

Command "F10.5": Set the frequency to 10.5KHZ (10.0 ~ 99.9).

Command "F1.0.5": Adjust 105KHZ frequency (1.0.0 ~ 1.5.0)

2) Adjusting PWM duty cycle:

D
3) read set parameter

Send a "read" string to read the set parameters.

Successfully set by turning: DOWN.

Setup failed to return: FALL.

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