8 Opto-isolated Relay board

3D_PCB_th

This is a 8 channel relay interface board using ULN2803. All the relays are opto-isolated using optocouplers and can be controlled directly using a microcontroller of any kind (Arduino , 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic) or a PC.

It’s easy to manufacture and have three pin screw terminals for easy connectivity.

Schematic

The full schematic is shown below

schematic

Photos

3D_PCB (1)

IMG_0001

IMG_0002

PCB

Subscribe
Notify of
guest
2 Comments
Inline Feedbacks
View all comments
ramialhalabi

What is the capacitance of c2?

RELATED PROJECTS

X
Arduino Nano 33 IoT Giveaway

By continuing to use the site, you agree to the use of cookies. more info

The cookie settings on this website are set to "allow cookies" to give you the best browsing experience possible. If you continue to use this website without changing your cookie settings or you click "Accept" below then you are consenting to this.

Close