4PCS NE555 AdjustableSquare Rectangular Generator Module Frequency Pulse Generator Module Stepper Motor Drive Board for Arduino Smart Car Square Wave Signal Control

The scope of application of this module:
1. Used as a square wave signal generator to generate square wave signals for experimental development.
2. Used to generate a square wave signal for driving a stepper motor driver.
3. Generate adjustable pulses for MCU use.
4. Generate adjustable pulses to control related circuits.
A brief description:
1. Main chip: NE555;
2. Size: 3.1CM*2.2CM
3. Input voltage: 5V-15VDC. When 5V power supply, the output current can be about 15MA; when 12V power supply, the output current can be about 35MA;
4. Input current: ≥100MA
5. Output amplitude: 4.2V V-PP to 11.4V V-PP. (Depending on the input voltage, the output amplitude will be different)
6. Output current: ≥15MA (5V power supply, when V-PP is greater than 50%), ≥35MA (12V power supply, when V-PP is greater than 50%)

Advantages:
1. The output is indicated by LED, and it is directly clear whether there is any output (LED quantity at low level, LED off at high level, LED blinking at low frequency);
2. The output frequency range can be selected to make the output frequency more continuously adjustable;
Low frequency range: 1Hz～50Hz
Intermediate frequency range: 50Hz～1kHz
Middle and high frequency range: 1KHz～10kHz
High frequency gear: 10kHz～200kHz
3. The output duty cycle can be fine-tuned. The duty cycle and frequency are not separately adjustable. Adjusting the duty cycle will change the frequency;
4. The output frequency is adjustable;
Period T=0.7(RA+2RB)C
RA and RB are 0-10K adjustable;
C=0.001UF in low frequency range;
C=0.1UF in the middle frequency range;
Medium and high frequency gear C=1UF;
C=100UF at high frequency, so the buyer can calculate the frequency of the waveform by himself;