12v Peristaltic Pump

Forum 2005-2010 (read only) Hardware Interfacing
1

Hello!

Can I use this board DC Opto-Isolated Output Board
to control 4 12v 150mA Peristatltic pump from the Arduino?

Thanks!!
Dan.

2

Certainly looks like it.

3

Yes I looked at it earlier but got distracted before I can post (dam work) and I would agree.

4

Before you place the order for the board, I would e-mail and check availability/expected shipment date. Everything on that site is marked as "in stock" whereas in reality I think not much (if anything) really is.

5

Hi,
I got the board: DC Opto-Isolated Output Board
I coneected it to the Arduino and it work great (although the board is switching in when there is 0 and not 1).

My question is: unlike regular relay where the GND is connteced directly to the device and the LIVE is connected through the relay, in this board it seems that both of them should be connected to the board, and the board "opens" and "close" both of them.

Did I understand correctly?

Thanks!!
Danofri.

6

and the board "opens" and "close" both of them.

No I think you will find that all the grounds are connected together and when turned on the OUT pin is connected to the ground just like a relay.

7

Thanks for the quick reply!

I think there is something I missing because I don't understand something:

  1. Why should I connect the board to GND and +VOUT (see right side of the board).
  2. How to connect each device to this board?

This is the picture of the board:

Many thanks!

8

The information on this board is sadly lacking in that link. I would guess that you connect ground and +Vout to your external PSU. Then connect the device you want to power between the GND and OUT0.
You will find that all the GNDs are connected together and that the Vout appearers on the OUT1 to OUT3 terminals.
Try it with a resistor as a load and power going to the Vout. However that should really be labelled Vin and not Vout in my opinion.

9

I think I got it :slight_smile:
I should connect the GND and +VOUT on the right side to the wall (using 12v transformer) and then connect each device to GND and OUT[0-3].

Under the hood, all GND are connected directly from the main GND to the devices GND and the relay just controls the OUT[0-3].

Many thanks!!!
Danofri.