Technical summary
1. As a square-wave signal generator, it generates a square-wave signal used for experimental development.
2. Used to drive a stepper motor to generate a square-wave transmission signal.
3. Generate an adjustable pulse for an MCU.
4. Generate an adjustable pulse to control associated circuits.
5. Size: 31mm x 22mm
6. Main chip: NE555
7. Input voltage: 5V-15V DC. With a 5V supply, the output current can be 15mA; with a 12V supply, the output current can be around 35mA
8. Input current: >= 100mA
9. Output amplitude: 4.2V V-PP to 11.4V V-PP. (With different input voltages, the output amplitude will be different)
10. Maximum output current: >= 15mA (5V supply, V-PP above 50%), >= 35mA (12V supply, V-PP above 50%)
11. Output with LED indication (low level, LED on; high level, LED off; low frequency, the LED blinks)
12. The output frequency range is selectable:
LF setting: 1Hz ~ 50Hz
FI setting: 50Hz ~ 1kHz
High-frequency setting: 1kHz ~ 10kHz
HF setting: 10kHz ~ 200kHz
13. The output duty cycle can be fine-tuned; the duty cycle and the frequency are not adjustable separately; adjusting the duty cycle changes the frequency
