The Hall effect sensor module is used to detect the proximity of magnets. It's much smaller. When the magnetic field exceeds the threshold, the open collector output transistor turns on, the logic compatible output goes low, and the onboard LED indicator lights up.
high speed (turn-on threshold 35450 gauss, minimum hysteresis 20 gauss, operating voltage range 4.5-24 volts. This module uses the Allegro MicroSystems A3144EUA sensor. 3-pin interface, signal, V +, and GND. I have.
The ultrasonic distance sensor provides very short (2 cm) to long (4 m) detection and distance. The sensor provides accurate and stable non-contact distance measurement from about 2 cm to 4 m with very high accuracy. It can be easily connected to any microcontroller.
This ultrasonic sensor module can be used to measure distance, object sensor, motion sensor, etc. Sensitive modules can be used in conjunction with microcontrollers to integrate with motion circuits to create robot projects and other distance, position, and motion sensitive products.
The module sends eight 40Khz square wave pulses and automatically detects whether it receives the returning signal. If there is a signal returning,
a high level pulse is sent on the echo pin. The length of this pulse is the time it took the signal from first triggering to the return echo.
Features :
- Sensor Type: Ultrasonic
- Output: Digital Sensor
- Voltage: 5VDC
- Detection distance: 2cm-400cm (0.02M - 4.0M)
- Static current: < 2mA
- Level output: high-5V
- High precision: up to 0.3cm
