![]() The sensors are supplied by the 3.3V pin, but I also tested the 5V pin with no difference. Buy Gravity: Analog Waterproof Capacitive Soil Moisture Sensor for Arduino: Patio, Lawn & Garden - FREE DELIVERY possible on eligible. The cable between the MCU and the sensors is a Cat 6 ethernet cable about 3-4m long. ![]() The MCU is a Wemos D1 mini clone inside an unheated room next to my house where I store garden utilities. ![]() During the first days, the temperature is very accurate (offset about 0.2 °K), but now it starts to drift up about 2 °K.Īll sensors are mounted in a rain-proof housing. Then same with the HTU21, also little purple PCB from Amazon. Sensor: SHT-30 Mesh-protected Weather-proof Temperature/Humidity Sensor 1M Cable : ID 4099 : 24.95 : Adafruit Industries, Unique & fun DIY electronics and kits. I had two BME280 sensors on those little purple PCBs from Amazon, but both of them generate a significant offset after a few days, especially in lower temperatures. Feather: Assembled Adafruit HUZZAH32 ESP32 Feather Board with Stacking Headers : ID 3619 : 21.95 : Adafruit Industries, Unique & fun DIY electronics and kits. After that the sensor just sends "NaN" values and I have to power cycle the MCU. But unfortunately the sensor stops working after a few hours or if I'm lucky maybe two days. don’t worry, this weather - proof ultrasonic sensor with separate probe can help you with this problem. The sensor is designed to be waterproof so you can use it safely in. SEN0212 TCS34725 I2C Color Sensor For Arduino SEN0206 IR Thermometer Sensor MLX90614 SEN0205 Liquid Level Sensor-FS-IR02 SEN0204 Non-contact Liquid Level Sensor XKC-Y25-T12V. The DHT22 is in terms of accuracy not the worst, it is about 0,3 °K off from a calibrated thermocouple. SHT31 weather-proof temperature & humidity sensor housed in a weather-proof enclosure. So far I tested the DHT22, BME280 and HTU21. I'm looking for a reliable outdoor temperature sensor.
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