A 4x4 matrix keypad requiring eight Input/Output ports for interfacing isused as an example. Rows are connected to Peripheral Input/Output (PIO) pins configured as output. Columns are connected to PIO pins configured as input with interrupts. In this configuration, four pull-up resistors must be added in order to apply a high level on the corresponding input pins.

Note: The color of the PCB may vary. However the circuit/pinout of the PCB will remain same.

Order Code : RDL/4X4KP/13/001/V2.0

It has 8 keys which can be connected to any microcontroller or any interfacing kit directly. KEY is a small key pad designed to data entries for microcontroller board.The board has 10-pin header for 10-wire ribbon cable. By default the switch status would be pulled up, every time you press a key the corresponding switch header changes its state to the common header in the board.

Note: The color of the PCB may vary. However the circuit/pinout of the PCB will remain same.

Order Code : RDL/8SW/13/001/V1.1

It has 4 keys which can be connected to any microcontroller or any interfacing kit directly. KEY is a small key pad designed to data entries for microcontroller board.The board has 6-pin header for 6-wire ribbon cable. By default the switch status would be pulled up, every time you press a key the corresponding switch header changes its state to the common header in the board.

Order Code : RDL/4SW/13/001/V1.1

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

This double sided pinboard features one side of the patch is 16 pin -60 pin turn DIP, 0.5mm spacing and the other side is 32 pin,44PIN, 64 pin, pitch 0.8mm pitch.

Order Code : RDL/TQFP/14/001/V1.0

This double sided pinboard features one side of the patch is 16 pin -60 pin turn DIP, 0.5mm spacing and the other side is 32 pin,44PIN, 64 pin, pitch 0.8mm pitch.

Order Code : RDL/QFP/14/001/V1.0

This is a wonderful little SD card interface module. It is easily interfaced as a peripheral to your module. Through programming, you can read and write to the SD card.All SD Card works on 3V interface.

Order Code : RDL/SDBB5V/14/001/V1.0

This is a wonderful little SD card interface module. It is easily interfaced as a peripheral to your module. Through programming, you can read and write to the SD card.All SD Card works on 3V interface so if your microcontroller is working on 3V you can use this board readily. The interface board provided is for microcontrollers running at 3V.

Order Code : RDL/SDBB/14/001/V1.0

LiFi Visible Light Technology is a very innovative technology known as 'LiFi' or 'Light Fidelity’ or VLC (visible light communication), which transfer the data through the light as a medium.

Order Code: RDL/LIFI/13/001/V1.0

Take a Look at the Updated Version of LiFi Here