2way PWM pulse frequency generator 1Hz-150Khz 3.3V-30V Board LCD Module

The module has four buttons [FREQ +], [FREQ-], [DUTY +] and [DUTY-], which are used to set the frequency and duty cycle.

Press the buttons to adjust the parameter value (long press quickly adds or subtracts).

Parameter settings are saved automatically.

Specifications:

• Working voltage: 3.3-30V
• Duty cycle range: 0-100%
• Frequency range: 1Hz-150KHz
• Frequency accuracy: ± 2%
• Signal output current: 5 to 30mA
• Output amplitude: equal to the supply voltage
• All set parameters are saved automatically.
• Ambient temperature: -20 to + 70 ℃
• Serial control (UART)
• Dimensions: 52x32mm

UART control:

1. Communication standard:

• Transmission speed: 9600 bps
• Data bits: 8
• Stop bits: 1
• Parity bit: none
• Flow control: none

PWM frequency setting

• "F101": Set the frequency to 101 Hz (001–999)
• "F1.05": You set the frequency 1.05 KHZ (1.00-9.99)
• "F10.5": Set the frequency to 10.5KHZ (10.0–99.9)
• "F1.0.5": You set the frequency 105KHZ (1.0.0–1.5.0)

PWM duty cycle setting

• "D050": Set the duty cycle to 50% (001–100)

You will read the set parameters

• They sent a "read" to read the set parameters.
• Setup was successful: DOWN
• Setup failed: FALL