Archives: Projects

This project is an one Channel Relay Driver suitable for a variety of projects. Description Single Channel Relay project  is a simple and convenient way to interface a relay for switching application in your project. Specifications: Input - 12 VDC @ 42 mA Output - SPDT...

This project is a general purpose 8 Channel Relay Board. Description 8 Channel Relay Board is a simple and convenient way to interface 8 relays for switching application in your project. Input voltage level support TTL as well as CMOS. Easy interface with Microcontrollers based...

Description This circuit is based on CMOS CD4013 Flip Flop IC. It has two stable states, ON and OFF. Once it is ON, it remains ON till you press the switch again. A short button press of a tactile switch SW1 latches the circuit ON and another toggles it back OFF. Relay switch...

Features LED matrix display 40x7; Display of clock, calendar, inside and outside temperature, custom text massages; Automatic Daylight Savings Time; Capability of keep the real time clock works correctly for more than one week without power supply. Clock automatic...

    This USB to serial (TTL) converter project is easy to build, it is simple and inexpensive. It is based on the PL2303SA USB to USART bridge from Prolific. Description The PL2303SA chip is not required an external crystal as the internal clock oscillator is...

  This is a simple USB to RS485 bus adapter. The adapter is designed using a FTDI basic UART chip (FT230XS) and an inexpensive TI differential receiver (SN75176) Description While developing the Luma RS485-networked LED driver we discovered a need for a small and inexpensive...

This project describes how to build a "soft touch" switch. By "soft touch" we mean that you have to push once to set the device ON and push again to set the device OFF. This kind of switch works by latching a relay to ON state with the push of a button and with another push latch is...

The purpose of this project is to develop a self sufficient Mailbox (real one) that will be powered only by the sun and that will display the number of the house, but only in accordance with the battery level. The system must work autonomously when there is or not enough light to...