Introduction: 8-Channel Relay Interface Board
This project is a general purpose 8 Channel Relay Board.
Step 1: 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 Micro controllers based projects and analog circuits. but in this bord is old . but PCB of new version of 8 channel relay module. with handle AC supply directly for home automation. this module are work same as our home distribution panel board.
Step 2: Specifications:
Input AC supply for switching application like Fan, Motor, etc.
Input supply 12 VDC @ 336 mA
Output eight SPDT relay
Relay specification 5 A @ 230 VAC
Trigger level 2 ~ 15 VDC
Header connector for connecting power and trigger voltage
LED on each channel indicates relay status
Screw terminal connector for easy relay output and aux power connection
Four mounting holes of 3.2 mm each
Step 3: Schematic
here Schematic is old Module in this schematic AC supply not edit
Step 4: PCB LAYOUT
Here PCB layout of new version with AC supply handling directly thorough output terminals .
Step 5: Parts List
this parts list of old version .