The scope of application of this module:
1.As a square wave signal generator, generate square wave signals for experimental development and use.
2.Used to generate a square wave signal that drives a stepper motor driver.
3.The adjustable pulse is used by the MCU.
4.Generate adjustable pulses to control the associated circuitry.

Parameter
Size: 35x33mm；
The main chip: NE555;
Input voltage: 5V-15VDC. 5V power supply, the output current can be around 15MA; 12V power supply, the output current can be around 35MA;
Input current: ≥100MA;
Output amplitude: 4.2V V-PP to 11.4V V-PP. (Depending on the input voltage, the output amplitude will be different);
The maximum output current: ≥15MA (5V power supply, V-PP greater than 50%), ≥ 35MA ( 12V power supply, when V-PP is greater than 50%)

Features
1.Output with LED indication, there is no output, visually visible (low LED when the high; when the high level LED off; when the frequency is relatively low, the LED flashes); 2.The output frequency range grade is optional, making the output frequency more continuously adjustable;
Low frequency range: 1Hz-50Hz,
Medium frequency range: 50Hz-1kHz,
Medium-high frequency range: 1KHz-10kHz,
High Frequency range: 10kHz-200kHz.
3.The output frequency is adjustable;
Cycle T=0.7(RA+2RB)C
VR1, VR2 are 0-10K adjustable;
Low frequency, C=0.001UF;
Medium frequency, C=0.1UF;
Medium-high frequency , C=1UF;
High frequency, C=100UF, so the user can calculate the frequency of the waveform.

Package Included:
1pcs NE555 Pulse Module