Yl105 Datasheet Better !!exclusive!! Guide

For maximum sensitivity, follow these installation rules:

SPI Select pin. It signals the radio module when an SPI command cycle begins.

System ground line. Common ground shared with the microcontroller. yl105 datasheet better

Features the AMS1117-3.3 voltage regulator Form Factor: Compact 26 x 19 x 12mm board 2. Why the YL-105 is "Better" (Datasheet Analysis)

The YL-105 is a popular, low-cost capacitive soil moisture sensor. Unlike its resistive counterpart (the YL-69 or FC-28), the YL-105 uses a copper-plated probe to measure dielectric constant. In theory, this prevents corrosion. In practice, without a better datasheet , you face calibration hell. Common ground shared with the microcontroller

The YL-105 is functionally identical to the FC-37 / YL-83 in most cases. If you find a datasheet for those, the pinout and usage match.

| Parameter | Value / Range | Source / Note | |-----------|---------------|----------------| | Supply Voltage | 3.3V – 5V DC (±5%) | PCB regulator (none) – direct to LM393 | | Quiescent Current | ~5mA (no IR LED) + 15mA IR LED | Calculated | | Output Type | Digital (DO): Active low (0V when obstacle detected) | Open-collector via LM393 | | Output Sink Current | Max 20mA (DO) | From LM393 datasheet | | Analog Output (AO) | 0V to VCC (inverse relationship with reflection) | Phototransistor voltage divider | | IR Wavelength | 940nm typical | Standard IR LED | | Detection Range | 2cm – 30cm (depends on object color/reflectivity) | Empirical, not guaranteed | | Response Time | < 10µs (digital output) | LM393 response + optical | | Operating Temp | 0°C – 70°C | Limited by LM393 commercial grade | Unlike its resistive counterpart (the YL-69 or FC-28),

Understanding the YL-105 Adapter: Why an Enhanced Datasheet Makes RF Projects Better

Because the term “YL‑105” does not refer to a single component, you must identify you have before consulting a datasheet. This guide covers the most common variants separately, so you can find the information that matches your device.

: The adapter converts the difficult 2x4 (8-pin) header of the nRF24L01 into a single row of clearly labeled pins (VCC, GND, CE, CSN, SCK, MOSI, MISO, IRQ), reducing wiring errors. Key Specifications of the YL-105 Input Voltage 4.8V – 12V (5V Nominal) Output Voltage Stable 3.3V via AMS1117 Compatibility nRF24L01, nRF24L01+, and PA+LNA versions Dimensions Approx. 33mm x 25mm Interface SPI protocol compatible with Arduino, STM32, ESP8266 Practical Integration Tips Instructableshttps://www.instructables.com

: Wireless modules are sensitive to EMI. The onboard bypass capacitors on the YL105 serve as a "better" solution than manual wiring with loose electrolytic capacitors.