The BMP280 sensor is an environmental sensor with temperature, barometric pressure that is the next generation upgrade to the BMP085/BMP180/BMP183. This sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI. Features: - Pressure range: 300 ~ 1100hPa (altitude 9000 m ~ -500 m); - Working voltage: 1.71 - 3.6VDC; - Low power consumption: 4μA; - High precision: at low-power mode, the resolution is 0.06hPa (0.5 meters); - Temperature output; - Communication interface: I2C or SPI; typical application: - GPS precise navigation (dead reckoning, the upper and lower bridge detection, etc.); - indoor and outdoor navigation; - The weather forecast; - The vertical velocity indication (rise / sink speed);

Capacitor type - Ceramic Quantity: 100 (5 each per value)

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The Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out.

This bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time. This level converter also works with 2.8V and 1.8V devices. What really separates this Logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side.