: Supports the standard 8-pin nRF24L01+ and nRF24L01 PA LNA modules. Dimensions : 26 x 19 x 12 mm. Pinout and Connection Guide
Without these, you cannot guarantee detection range or reliability.
When you apply a logic HIGH (3.3V or 5V) to the IN pin, the transistor turns on , energizing the coil. But here is the critical nuance: many 3.3V logic systems (like ESP32 or Raspberry Pi) cannot fully saturate the transistor because the datasheet’s "High" voltage is designed for 5V TTL. A better datasheet reading would highlight the (typically ~1.5V to 3V). To avoid erratic switching, the datasheet should explicitly state: For 3.3V logic, use the "Low" signal to activate the relay, or add an external level shifter. Most datasheets omit this, forcing the user to deduce it from the schematic.
: if you see "00" or "FF" in your serial monitor, it usually indicates a wiring issue or a lack of power. The YL-105's onboard capacitors help prevent the common "reboot loop" caused by the nRF24L01's sudden power spikes. Arduino Forum 4. Alternative "YL105" Device yl105 datasheet better
RF modules are highly sensitive to voltage ripples and electromagnetic interference (EMI). The YL-105 includes on-board SMD bypass and filtering capacitors. These capacitors act as localized energy reservoirs. When the nRF24L01 rapidly shifts from standby mode to active transmission, the capacitors supply immediate current, preventing the voltage drop-offs that cause packet loss or MCU resets. 3. Native 8-Pin Socket Matrix The board breaks out the high-density
Before we discuss "better," we need a baseline. The YL105 is a digital temperature and humidity sensor module. Unlike the raw DHT11, the YL105 comes pre-soldered onto a PCB with a built-in pull-up resistor and a filtering capacitor.
, ensuring it can easily power even high-power "PA+LNA" (antenna) versions of the nRF24L01. Arduino Forum Technical Parameters Typical Value Input Voltage 4.8V – 12V DC (5V recommended) Output Voltage 3.3V DC (fixed) Current Consumption : Supports the standard 8-pin nRF24L01+ and nRF24L01
With normal use, 4× AA alkaline batteries in the main unit last approximately 3 months. The remote controls use 3× AG13 batteries each.
Connecting loose jumper wires directly to an 8-pin dual-row module header on a breadboard often results in loose connections. The integrated single-row linear footprint of the YL-105 permits straightforward mechanical mounting and clean cable management.
Place high-frequency ceramic decoupling capacitors as close as possible to the VCC and GND pins. Keep trace lengths under 2mm to minimize stray inductance. Power Loops When you apply a logic HIGH (3
(often styled as YL105) typically refers to a specific breakout board adapter designed for the nRF24L01+ wireless transceiver module
For advanced technical details, you can find the Alpha Wire YL105 Specification Sheet on DigiKey or the L-com SRWQ100-YL105 Sensor Data via Octopart.