Archives: Projects

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...

The MAX6953 from Dallas Maxim is a compact cathode-row display driver that interfaces a microprocessor (like PIC or AVR) to four 5x7 dot matrix LED display trough an I2C compatible serial interface. The chip includes some features that can help us to handle easier the displaced data....

Description 4 Channel Infrared (IR) Remote controller is  using  HT12A and HT12D encoder / decoder chips from Holtek. Features Supply - Transmitter : 3 to 5 VDC, 5 V @ 20 mA & Receiver : 5 VDC @ 200 mA Output : 4 channel Latch or Momentary on board Jumper for...

Description Dual Channel Relay Board is a simple and convenient way to interface 2 relays for switching application in your project. Input - 12 VDC @ 84 mA Output - two SPDT relay Relay specification - 5 A @ 230 VAC Trigger level - 2 ~ 5 VDC Berg pins for...

Description Solid State Relay Switch is a simple kit which will help you control (ON / OFF) a single high power circuit from a low power drive. Load - 24 to 240 VAC @ 500 W Trigger voltage - 2 to 5 VDC (TTL) @ 10 mA Input isolated with use of Optocoupler Power Battery...

Schematic Parts...

Description 5 LED VU Meter kit is based on LB1409 IC from SANYO, which will indicates the volume level of the audio signal it senses SUPPLY 12V DC @ 50mA PR1 REF SET PR2 AUDIO LEVEL...