1. product highlights:
1.1 direct drive LED, motor, solenoid valve and other loads
1.2 two modes can be selected:
PWM mode - frequency (continuous), duty cycle. Note that the switch times cannot be set in this mode, and the switch is always on and off;
Pulse mode - positive pulse width time, negative pulse width time, power on delay start time, and switching times can be adjusted.
1.3 with start stop button, start and stop can be controlled
1.4 wide voltage input 3.3-30v, 5.08mm terminal wiring
2. Technical parameters:
2.1 working voltage: 3.3-30v (note that positive and negative poles should not be connected reversely, otherwise it may burn down)
2.2 frequency range: 1hz-150khz, with accuracy of about 2%. Generally, 20kHz is selected for motor speed regulation
2.3 duty cycle range: 0-100%, 1% step
2.4 number of pulses: 1-9999, or infinite (display "-" represents infinite)
2.5 delay output time: 0.000s-99999s, minimum setting 1ms
2.6 length of positive and negative pulse width: 0.000s-99999s, minimum setting 1ms
2.7 output load capacity: less than 8A (MOS switch tube)
2.8 output amplitude: the amplitude is equal to the supply voltage (direct connection between out+ and v+ modules)
2.9 product size: 79mm*43mm*30mm
2.10 product weight: 42g
2.11 packaging form: antistatic bag
3. Module description:
3.1 key operation instructions
3.2 PWM mode (the "%" on the display screen is PWM mode)
The factory default mode is PWM mode, freq + and freq - keys set the frequency, duty + and duty - keys set the duty cycle; Short press the stop button to control the output or stop of the signal. When it stops, the output is 0, and the "out" sign on the screen indicates that there is output, otherwise it means that the output is stopped; The default factory frequency is 1kHz and the duty cycle is 50%.
If you need to switch to pulse mode, long press the set button (more than 6 seconds) and don't release it. You will see the screen change and "%" disappears. It is pulse mode.
3.3 pulse mode (pulse mode without "%" on the right side of the display)
Press the P + and P - buttons to set the positive pulse width time, and the LCD will display upward. Press the N + and N - buttons to set the negative pulse width time, and the LCD will display downward, in seconds; Short press the stop button to control the output or stop of the signal. When it stops, the output is 0, and the "out" sign on the screen indicates that there is output, otherwise it means that the output is stopped; The default factory positive pulse width is 0.5 seconds, negative pulse width is 0.5 seconds.
Setting of pulse number and delay time: in pulse mode, long press the set button for 2 seconds and then release it to enter the setting interface of pulse number and delay time. Set will be displayed on the screen, and the output pulse will be turned off and cleared after entering; The P + and P - keys set the delay time, and the N + and N - keys set the number of pulses. The factory default delay time is 0 seconds, and the number of pulses is infinite (display --); Press the set button for 2 seconds to return to the pulse interface automatically. Press the stop button. After setting the delay time, the set number of pulses will be sent out. If the number of pulses is sent out, 0 will be automatically output. If the number of pulses is not sent out during the period, pressing the stop button will turn off and reset the output pulses. The set number of pulses will be sent out every time the system is started.
3.4 application examples
3.4.1 PWM output 20kHz, 60% duty cycle: select PWM mode, frequency set to 20.00, duty cycle set to 060%.
3.4.2 the output is turned on for 0.6 seconds, turned off for 0.2 seconds, infinite cycle: select pulse mode, the positive pulse width is set to 0.600, the negative pulse width is set to 0.200, the delay time is set to 0.000, and the number of pulses is set to -.
3.4.3 power on or press the start button, delay for 5 seconds, then turn on the output for 0.6 seconds, turn off for 0.2 seconds, infinite cycle: select pulse mode, set the positive pulse width to 0.600, the negative pulse width to 0.200, the delay time to 5.000, and the number of pulses to -.
3.4.4 power on or press the start button, delay for 5 seconds, and then output 100 pulses of high level 10ms and low level 10ms: select pulse mode, set the positive pulse width to 0.010, the negative pulse width to 0.010, the delay time to 5.000, and the number of pulses to 0100.
3.4.5 power on delay 10 seconds, and then permanent output signal: select pulse mode, set the positive pulse width to a number greater than 0, set the negative pulse width to 0, set the delay time to 10.00 seconds, and the number of pulses is infinite (- ---)
Quantity: 1pcs
