The is an essential power regulation and breakout module designed specifically for the popular nRF24L01+ 2.4GHz wireless transceiver . While the nRF24L01+ Transceiver is highly efficient for low-power radio communication, its absolute maximum operating voltage is 3.6V DC . Connecting it directly to the 5V VCC line of common microcontrollers like the Arduino UNO will permanently destroy the radio chip.
If the jumper is installed, the relay activates when IN = LOW. The wiring is identical, but logic is reversed.
While the YL105 is efficient, at maximum current loads, it requires adequate copper pour on the PCB to act as a heatsink. yl105 datasheet
The tubing remains flexible after shrinking, preventing damage to the enclosed cables. Mouser Electronics India Common Applications The YL105 series is often used for: Electrical insulation and cable bundling. Color-coding (yellow) for identification. Strain relief and protection against abrasion or moisture. XTRA-GUARD 1 applications. Mouser Electronics India (like 1/2" or 3/4") or do you need the full PDF datasheet for a specific part number? FIT2213/4 YL105 Alpha Wire | Mouser India
void loop() digitalWrite(relayPin, HIGH); // turn relay ON delay(2000); digitalWrite(relayPin, LOW); // turn relay OFF delay(2000); The is an essential power regulation and breakout
| | Min | Typ | Max | Unit | |---------------|---------|---------|---------|----------| | Supply Voltage (VCC) | 4.5 | 5.0 | 5.5 | V DC | | Input High Voltage (IN - HIGH mode) | 3.0 | 5.0 | 5.5 | V | | Input Low Voltage (IN - LOW mode) | 0 | 0.8 | 1.5 | V | | Input Current (IN pin) | – | 5 | 15 | mA | | Relay Coil Current | – | 70 | 90 | mA | | Total Module Current | – | 85 | 110 | mA |
Available in various packages (like SOP-8 or specialized bridge housings) to fit modern, space-constrained PCBs. If the jumper is installed, the relay activates
| Parameter | Value | |-----------|-------| | Operate Point (Bop) | 10–30 mT (South pole facing marked side) | | Release Point (Brp) | 2–15 mT | | Hysteresis | 5–12 mT |
Furthermore, standard microcontrollers (like the Arduino Uno or Nano) often feature low-current onboard 3.3V regulators that cap out at 50mA or 150mA. High-power wireless transmissions—especially when using an nRF24L01+ with Power Amplifier and Low Noise Amplifier (PA+LNA) hardware —experience large instant current spikes (often exceeding 115mA). These spikes cause voltage drops, resulting in broken SPI connections, data corruption, or transmission drops.
For applications requiring high-speed switching (e.g., dimming, pulse control), the relay’s mechanical nature limits operation. Refer to these timing specs:
// Invert logic for intuitive reading (Higher value = Dirtier water) // This requires calibration against known samples.