4 Port Relay Board


This is a set of 4 relays and associated circuitry to drive the relays with the low current of microcontrollers.  Great for controlling 110V mains with a microcontroller.  Board runs off 5V and requires up to 240mA when all 4 relays are activiated.  Single sided PCB was designed in Eagle.


Images V0.1:




Schematic Image V0.2:


PCB Image V0.2:


Parts List V0.2:


Eagle Design Files (PCB and Schematic):

Relay Board V0.2: Spacing between high voltage increased to at least 50mils.  General routing clean up.

Relay Board V0.1: Initial release


All of the above designs and code are licensed under the GNU General Public License and the Sparkfun Beerware License (you buy me a beer if you use this and we meet someday):
Copyright (C)  2011  Mike Ragsdale
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.