The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature. The LM35 thus has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Centigrade scaling. The LM35's low output impedance, linear output, and precise inherent calibration make interfacing to readout or control circuitry especially easy. 

ORDER CODE: RDL689

Arduino Xbee Adapter Development Board allows an Arduino board to communicate wirelessly using  Zigbee or BlueTooth.This shield is build up by two parts: Bluetooth and Xbee shield.This Bluetooth shield is a serial port Bluetooth module (Slave/Master) breakout board. you can directly stack on Arduino and use the UART port for Bluetooth communication.XBee Shield is an enhanced Zigbee XBee Series modules breakout board for Arduino, it can directly plug in with Arduino, and use any pin of the basic board to connect with the XBee module serial port.XBee Shield with Logic Level Converter is an enhanced serial port XBee module breakout board.It can directly plug in with Arduino.

Order Code : RDL/GRS/14/001/V1.0

The components of solar powered intelligent drip irrigation system are shown in Fig. Soil moisture sensor is used for real-time collection of crop root soil moisture content and converting it into a signal in the range of Voltage V; and the signal will transformed as knowledge of water requirement of crop. Soil moisture content at the root zone of different crops is collected by using the soil moisture sensor. The threshold limit for the water requirement for a particular crop has been feed to system which in turn controls the operation the control system. The power needed for the operation of the control system has been met with the use of a solar panel and the display will receive the control signal and display the data stored using the sensor from the field.

ORDER CODE: RDL/DIY-DRI/14/001/V1.0

One of the basic interfacing requirements for the hobbyists or electronics enthusiasts is I/P (keypad) and O/P (LCD display)  for proyotype applications. This shield uses minimum number I/O’s that is 4 bits for LCD data and 2 control signal lines for the same. A single analog pin (Pin A0) is multiplexed to read 5 input key switches (Navigation keys). Each key has been pulled up to a different voltage level, so a different voltage will be generated every time a user selects a key. This voltage could be read by the analog pin A0 on the board. Hence saves the no of I/O pins.  The backlight of the LCD could be controlled by setting PWM (Pin D10) by adding a few lines of code.

Order Code : RDL/RLSS/14/001/V1.0

This is Eight  Channel relay board controlled through WiFi. The WiFi relay board is with 8 SPDT relays rated up to 7A each. You can control devices 230V / 120V (up to 8) directly with one such relay unit. Suitable for home automation applications, hobby projects, industrial automation.

Order Code :  RDL/8RLY-WiFi/14/001/V1.0

Tin/lead solders, also called soft solders, are commercially available with tin concentrations between 5% and 70% by weight. The greater the tin concentration, the greater the solder’s tensile and shear strengths. Solder Lead is commonly used for electrical soldering and in electrical/electronic work. It has lower melting point.

Order Code : RDL/SOLDERLEAD/13/001/V1.0

24 Channel Opto-Isolated Board is a 24 channel opto-isolator board assembly that allows Raspberry Pi and other logic circuits to be interfaced to  input signals that require opto-isolation.This board is helpful for connecting digital systems to a high-voltage or noisy system. 

ORDER CODE: RDL708