Yl-105 Datasheet -

Because “YL-105” is a module assembly rather than a single silicon component, there is no single official manufacturer datasheet from a major semiconductor house. However, you can obtain all necessary documentation by downloading:

Search strings to use:

Connect DO to an Arduino digital pin with a pull-up resistor enabled (or use INPUT_PULLUP). Place a small neodymium magnet on a rotating shaft. Each time the magnet passes the YL-105, the output goes LOW. Use interrupts to count pulses per minute.

Arduino Code Snippet:

int sensorPin = 2;
volatile int pulseCount = 0;
void setup() 
pinMode(sensorPin, INPUT_PULLUP);
attachInterrupt(digitalPinToInterrupt(sensorPin), countPulse, FALLING);
Serial.begin(9600);

void loop() 
// Calculate RPM every second
// ...

To read data from the YL-105, you do not need a specific library for the module itself, but rather a library for the protocol being used (e.g., RC Switch, VirtualWire). yl-105 datasheet

Wiring:

Antenna: For the module to work effectively, you must attach an antenna.

The YL-105 datasheet may not exist as a single document from one manufacturer, but by combining the 49E Hall sensor datasheet, LM393 comparator datasheet, and the module’s typical pinout, you have all the information needed to master this device. Its combination of analog and digital outputs, adjustable sensitivity, and low cost makes it a staple for magnetic proximity sensing, RPM measurement, and position detection.

Whether you are building a simple non-contact switch or an advanced magnetic field logger, the YL-105 delivers reliable performance. Always refer to the component-level datasheets for electrical characteristics, and use the module’s potentiometer to dial in the perfect detection range for your application.

Further Reading:

Have a specific question about the YL-105 or Hall effect sensors? Leave a comment or consult our technical forum for community-driven support.

The YL-105 (also known as the AMS1117-3.3 Adapter) is a power regulator module specifically designed to simplify the connection of nRF24L01+ wireless transceivers to microcontrollers like Arduino. Core Purpose Because “YL-105” is a module assembly rather than

The primary challenge with the nRF24L01 module is its strict 3.3V power requirement, while most standard Arduinos operate at 5V. Connecting a wireless module directly to a 5V pin can permanently damage it. The YL-105 Adapter bridges this gap by converting a 5V input into a stable 3.3V output for the radio. Key Specifications Onboard Regulator: Integrated AMS1117 3.3V chip.

Input Voltage: DC 4.8V to 12V (typically powered via the Arduino 5V pin). Output Voltage: Fixed 3.3V.

Interface: 8-pin socket for direct plug-and-play with the nRF24L01+ module.

Output Current: Capable of providing up to 800mA, which is more than sufficient for both standard and high-power (PA+LNA) versions of the radio. Wiring & Pinout

The adapter features a 2-pin header for power input and a standard SPI header for data: VCC: Connect to 5V on your microcontroller. GND: Connect to GND on your microcontroller.

SPI Pins (CE, CSN, SCK, MOSI, MISO, IRQ): These pass directly through to the nRF24L01. Why Use It?

Voltage Stability: Common Arduino 3.3V pins often lack the peak current capacity needed during radio transmission, leading to communication failures. The YL-105 provides much cleaner and more robust power. Search strings to use: Connect DO to an

Breadboard Friendly: It breaks out the double-row pins of the nRF24L01 into a format that is easier to wire with standard jumper cables.

Troubleshooting: If your YL-105 indicator LED is off when power is applied, it likely indicates a short circuit or a faulty regulator.

I searched for a specific "YL-105" datasheet, but it is not a standard industry component code (like for a major IC, transistor, or sensor). This code is most likely used in one of two contexts:

Here is how to find a helpful paper/datasheet for the YL-105, depending on what the component actually is.

To adjust the sensitivity:

Tip: For best results, use a south pole facing the sensor. The 49E is most sensitive to south pole magnetic fields.

Understanding the pinout is essential. The YL-105 module typically exposes four pins (or a 4-pin header):

| Pin Name | Description | |----------|-------------| | VCC | Power supply (3.5V – 5.5V) | | GND | Ground | | DO | Digital Output (TTL: HIGH when no field, LOW when field detected – adjustable) | | AO | Analog Output (direct output from the 49E Hall sensor, voltage varies with magnetic flux density) |

Note from the datasheet: The AO pin is rarely used in simple digital applications. It provides a voltage between 0V and VCC proportional to the magnetic field strength, useful for linear position sensing or magnetic field strength measurement.