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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. -
The Mega 2560 is a microcontroller board based on the ATmega 2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega 2560 board is compatible with most shields designed for the Uno and the former boards. -
he smallest and easiest to use serial conversion circuit on the market! This board has one purpose in life - to convert RS232 to TTL and vice versa (TX and RX). This will allow a microcontroller to communicate with a computer. Shifter SMD is powered from the target application and can run at any voltage! That’s right - power the board at 5V and the unit will convert RS232 to 5V TTL. Power the board at 2.8V and the Shifter board will convert RS232 to 2.8V CMOS TTL. Includes two indicator LEDs for TX and RX. Runs from 300bps up to 115200bps. -
RAC20-15DK Switched power supply 20W ±15V RAC-15 PCB mounted AC/DC switched power supply. The module can be supplied with a voltage between 85-264VAC or 120-370VDC and will convert it to two stabilized DC voltages. Maximum output power is 20W. The output is protected against short-circuit, overload and over voltage. Please observe that the module is powered with mains voltage Input voltage: 85 - 264VAC / 120 - 370VDC Output voltage: -15VDC / +15VDC Output current: 670mA / 670mA Maximum power: 20W Dimensions: 52.5 x 27.4 x 23mm Manufacturer: Recom Part.no: RAC20-15DK

