The grid pattern consists of interlaced traces that are not connected. When dry, the resistance between them is near-infinite (open circuit). When raindrops bridge the gap, the water acts as a conductor, lowering the resistance significantly.
Raw datasheets won’t tell you this:
Look for a specific manufacturer logo on the chip (e.g., a stylized "T" for Texas Instruments or "ON" for onsemi). yl105 datasheet better
In the crowded world of capacitive humidity sensors, the YL105 is often misunderstood. Viewed by beginners as a "cheap alternative," this sensor module—when paired with a correct reading of its datasheet—offers a superior price-to-performance ratio for 80% of DIY and commercial IoT projects. The grid pattern consists of interlaced traces that
: 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 Raw datasheets won’t tell you this: Look for