Design with hall effect KY O35 in Cirkit DesignerThe Hall Effect KY-035 is a magnetic field sensor that detects the presence and strength of a magnetic field and converts it into an electrical signal. This sensor operates based on the Hall effect principle, where a voltage is generated perpendicular to the flow of current in the presence of a magnetic field. The KY-035 is widely used in applications such as position sensing, speed detection, proximity sensing, and current measurement. Its compact design and ease of use make it a popular choice for hobbyists and professionals alike.
This circuit uses a KY 038 sound sensor to control a red LED. The LED is powered by a 9V battery and is connected in series with a 200-ohm resistor to limit the current. The sound sensor's analog output (A0) is connected to the LED's cathode, allowing the LED to light up in response to sound detected by the sensor.
Open Project in Cirkit Designer
This circuit is a flame detection and response system. When the KY-026 Flame Sensor detects a flame, it activates a PNP transistor, which in turn powers a water pump and a buzzer to alert and extinguish the flame. Additionally, an LED indicator is used to show the system's status, and a rocker switch controls the power supply from a 5V battery.
Open Project in Cirkit Designer
This circuit is designed for a comprehensive security and access control system with motion detection, access via RFID, and a break-beam sensor. It includes a solenoid lock controlled by a relay, visual and audible alerts, and a robust power management system with solar and battery backup to ensure uninterrupted operation.
Open Project in Cirkit Designer
This circuit consists of two FC-51 IR Obstacle Sensors connected to two KF-301 relays, which likely serve as triggers for switching the relays. Four gearmotors are powered through two XL6009E1 Boost Converters, which are likely used to step up the voltage from a 2-cell 18650 Li-ion battery pack. The relays appear to control the power flow to the boost converters, and thus to the gearmotors, based on the obstacle detection inputs.
Open Project in Cirkit DesignerThe KY-035 has three pins, as detailed in the table below:
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VCC | Power supply pin (3.3V to 5V DC) |
| 2 | GND | Ground pin |
| 3 | OUT | Output pin (Analog or Digital signal output) |
The following example demonstrates how to use the KY-035 with an Arduino UNO to read both analog and digital outputs:
// Define pin connections
const int analogPin = A0; // KY-035 analog output connected to A0
const int digitalPin = 2; // KY-035 digital output connected to D2
void setup() {
Serial.begin(9600); // Initialize serial communication
pinMode(digitalPin, INPUT); // Set digital pin as input
}
void loop() {
// Read analog value from the sensor
int analogValue = analogRead(analogPin);
Serial.print("Analog Value: ");
Serial.println(analogValue);
// Read digital value from the sensor
int digitalValue = digitalRead(digitalPin);
Serial.print("Digital Value: ");
Serial.println(digitalValue);
// Add a small delay to avoid flooding the serial monitor
delay(500);
}
No Output Signal
Inconsistent Readings
Digital Output Always HIGH or LOW
Q: Can the KY-035 detect both north and south poles of a magnet?
A: Yes, the KY-035 can detect both poles of a magnet, but the output signal will vary depending on the pole's orientation and strength.
Q: Is the KY-035 suitable for high-speed applications?
A: The KY-035 is suitable for moderate-speed applications. For high-speed sensing, consider using a sensor with a faster response time.
Q: Can I use the KY-035 with a 3.3V microcontroller?
A: Yes, the KY-035 operates at both 3.3V and 5V, making it compatible with 3.3V microcontrollers like the ESP32 or Raspberry Pi Pico.
By following this documentation, you can effectively integrate the Hall Effect KY-035 sensor into your projects for reliable magnetic field detection.