5V DC (accepts 5V input from Arduino or other microcontrollers). Output Voltage: 1.9 ~ 3.6V DC (provides a regulated 3.3V).
The YL-105 controller module features four pins for easy integration with microcontrollers like Arduino, Raspberry Pi, or ESP32. Connects to power supply. GND: Ground connection.
12.3 pF.
Standard SPI interface pins for easy connection to microcontrollers. 2. Key Features of the YL-105 Adapter Board
: This functional feature allows you to leave the protected area after turning on the device without triggering the alarm yourself. yl-105 datasheet
He shook his head. Rumor. Myth. Still, he couldn't resist. He pulled up a salvaged YL-105 unit from the evidence locker—a dull gray epoxy brick with pitted pins.
Aris worked from a converted salvage station orbiting the Moon. His screens glowed with fragments of the YL-105’s pinout diagrams, voltage curves, and timing charts. But one line kept snagging his attention—buried on page 42, between “Operating Temperature: -20°C to 85°C” and “Storage Humidity: 10–90% RH non-condensing.”
if (value == 0) Serial.print("Unknown encoding"); else Serial.print("Received: "); Serial.print( mySwitch.getReceivedValue() ); Serial.print(" / Bits: "); Serial.print( mySwitch.getReceivedBitlength() ); Serial.print(" / Protocol: "); Serial.println( mySwitch.getReceivedProtocol() );
| Parameter | Value | | :--- | :--- | | | 3.3V to 5V DC (5V recommended) | | Current Consumption | 15mA to 20mA (LED + IC) | | Output Type | Digital (0 or 1) + Analog (varies by reflection) | | Comparator Chip | LM393 (Open-collector digital output) | | Detection Range | 1mm to 15mm (optimal: 3-5mm for lines) | | Output Logic | Active LOW (0 = Object/White surface detected) | | PCB Size | Approx. 31mm x 14mm | 5V DC (accepts 5V input from Arduino or
-> Arduino Digital Pin 2 (Optional, for interrupt-based sensing) Simple Arduino Code Example
📐 : Roughly 26mm x 19mm , making it ideal for breadboards or small enclosures. 🛡️ Version 2: YL-105 Infrared Motion Sensor Alarm
The YL-105 designation spans multiple completely unrelated product categories, from security systems to voltage regulators, stove fans to industrial sensors. For engineers, hobbyists, and technicians, accurate identification of the specific YL-105 device in hand is the critical first step toward finding the appropriate technical documentation. The most common applications fall into two major categories: the PIR motion sensor alarm for security applications and the 5V-to-3.3V voltage regulator for Arduino and electronics projects. Always verify the product's physical characteristics, manufacturer markings, and intended application before assuming which documentation applies.
The YL-105 is a 5V to 3.3V voltage regulator adapter board designed to facilitate stable operation for the nRF24L01+ wireless module with 5V microcontrollers, utilizing an on-board AMS1117-3.3 regulator. It features an 8-pin interface for the module and provides necessary power stability to prevent signal issues. For full specifications and purchasing, visit MakerLab PH Instructables Connects to power supply
Note: Pins 2 and 3 are often interchangeable. Some variations label them simply as two data outputs. You usually only need to connect one DATA pin to your microcontroller.
Remember:
| Specification | Details | | :--- | :--- | | | YL-105 | | Compatibility | nRF24L01, nRF24L01+ (including PA+LNA variants) | | Voltage Regulator | AMS1117 3.3V LDO | | Input Voltage (VCC) | 5V DC (derived from Arduino 5V pin or external supply) | | Output Voltage | 3.3V DC for the connected radio module | | Logic Level | Inputs from the host microcontroller are typically 5V tolerant. | | I/O Pins | 7 pins: GND, VCC, CE, CSN, SCK, MOSI, MISO | | Dimensions (LxWxH) | Approx. 26 x 18.6 x 10 mm |
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.
