NE555 pulse frequency adjustable duty cycle square wave rectangular wave signal generator module, stepper motor driver

Application case:
1. used as square wave signal generator, generate square wave signal for experimental development.
2. is used to generate the square wave signal that drives the stepper motor drive.
3. generates adjustable pulses for use by the MCU.
4. generates tunable pulses that control the associated circuitry.

Product parameter:

Product Name: NE555 module (pulse duty cycle adjustable pulse frequency 4 adjustable)

Product size: 31.0mm * 22.0mm* 15.0mm (length x, width x high)

Color: red product weight: G (including packing)

Material: FR4+ electronic components
Packing: single module, electrostatic bag packing

Dimensional drawing:

Using tutorials:

Product performance:

1 input voltage: 5V-15VDC. 5V power supply, the output current can be about 15MA; 12V power supply, the output current can be about 35MA;

3, input current: 100MA
4, output amplitude: 4.2V V-PP to 11.4V V-PP. (depending on the input voltage, the output amplitude will not be the same)
5, the maximum output current: 15MA (5V power supply, V-PP is greater than 50%), or 35MA (12V power supply, V-PP is greater than 50%)

Product features:

1, the output with LED instructions, low power LED light, high level LED out, the frequency is relatively low, LED flashing;
2, the output frequency range 4 optional, the output frequency is more continuous adjustable;
Low frequency gear: 1Hz to 50Hz intermediate frequency gear: 50Hz to 1kHz
Medium and high frequency gear: 1KHz to 10kHz high frequency gear: 10kHz to 200kHz

3, the output duty cycle can be fine tuned, duty cycle and frequency are not adjustable, the duty cycle will change the frequency;

4 the output frequency is adjustable, the frequency of the waveform can be calculated:

The period T=0.7 (RA+2RB) C (RA and RB is 0-10K adjustable);

C=100UF in low frequency; C=1UF in intermediate frequency;

Medium and high frequency C=0.1UF; high frequency C=0.001UF,

Matters needing attention

When you change the frequency with the jumper cap, please cut off the power before you jump on the cap and switch on again.