Pages: [1]   Go Down
Author Topic: 5V Relay Board 8 Channel Connections .. HELP  (Read 8076 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Newbie
*
Karma: 0
Posts: 4
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hi,

I recently bought this relay board, but i am not sure about the connections. Can you check my wiring diagram please.. smiley-grin

EDIT: i will be using 12VDC solenoid valve, 500mA

EDIT: Board Description added

This is what i bought:



And here's the description of the board (from http://arduino-info.wikispaces.com/ArduinoPower)



and this is my wiring diagram:


Thanks,
Jana
« Last Edit: September 05, 2012, 03:57:39 am by JanaLaine » Logged

Left Coast, CA (USA)
Offline Offline
Brattain Member
*****
Karma: 361
Posts: 17259
Measurement changes behavior
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Looks all correct to me.

Lefty
Logged

Indian Ocean
Offline Offline
Newbie
*
Karma: 0
Posts: 6
Arduino rocks
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset


Hi JanaLaine,

Nice documentation of what You want to do!

But if my old eyes don't trick me, You mixed up the + and - of the 12 Volt supply to Your "external" valves.

0V must go to - minus of Your Valve coil and the + plus 12V get switched by the relays contacts and than must be connected to the +plus of the valves coil.

(+0V as You write is yes the Zero of the + PLUS 12 Volt supply, but "more" negative then the plus 12 Volt.)

rgds
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 4
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Looks all correct to me.

Lefty

Thanks..  smiley-cool
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 4
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset


Hi JanaLaine,

Nice documentation of what You want to do!

But if my old eyes don't trick me, You mixed up the + and - of the 12 Volt supply to Your "external" valves.

0V must go to - minus of Your Valve coil and the + plus 12V get switched by the relays contacts and than must be connected to the +plus of the valves coil.

(+0V as You write is yes the Zero of the + PLUS 12 Volt supply, but "more" negative then the plus 12 Volt.)

rgds

Thanks for reminding me about the polarity. i missed that one out... -ve of the valve should be connected to -ve PS. thanks for that  smiley-cool

1 more question, if, let say, i have about 8 solenoid valve 12VDC, 500mA. What type of power supply should i buy?

- 12VDC, 1A? or 12VDC 4A?

Thanks again,
Jana
Logged

Left Coast, CA (USA)
Offline Offline
Brattain Member
*****
Karma: 361
Posts: 17259
Measurement changes behavior
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset


Hi JanaLaine,

Nice documentation of what You want to do!

But if my old eyes don't trick me, You mixed up the + and - of the 12 Volt supply to Your "external" valves.

0V must go to - minus of Your Valve coil and the + plus 12V get switched by the relays contacts and than must be connected to the +plus of the valves coil.

(+0V as You write is yes the Zero of the + PLUS 12 Volt supply, but "more" negative then the plus 12 Volt.)

rgds

Thanks for reminding me about the polarity. i missed that one out... -ve of the valve should be connected to -ve PS. thanks for that  smiley-cool

1 more question, if, let say, i have about 8 solenoid valve 12VDC, 500mA. What type of power supply should i buy?

- 12VDC, 1A? or 12VDC 4A?

If your actual application can have a requirement to turn all 8 outputs on at the same time then >4 amps is the answer. If only a single coil is going to be energized at any given time then a 1 amp supply would work.

Lefty


Thanks again,
Jana
Logged

Offline Offline
Newbie
*
Karma: 0
Posts: 4
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset


If your actual application can have a requirement to turn all 8 outputs on at the same time then >4 amps is the answer. If only a single coil is going to be energized at any given time then a 1 amp supply would work.

Lefty



Thanks again Lefty... cheers  smiley-cool
« Last Edit: September 06, 2012, 07:41:13 am by JanaLaine » Logged

Pages: [1]   Go Up
Jump to: