Required Power Supply for Multiple Components?

Other Hardware Motors, Mechanics, Power and CNC
1

Hi all,

I plan on using an Arduino UNO to control and monitor several different components, with various supply voltage requirements. My questions pertains to how to connect the power supplies and the arduino to the devices to avoid destroying any of my equipment.

The devices that will be connected to the arduino are:

A pressure transducer, with a 5V DC supply requirement
*Spec's at link

http://www.ssi-sensors.com/pdfs/Pressure%20Sensors/P51/PS-AN2_FAMILY%20PRODUCT%20OVERVIEW.pdf

A liquid flow meter with 5V DC supply requirement,
*Specs at link, 15mA max operating current

A open/close solenoid valve, with 12V requirement
*Spec's at link, has a 1.3A current draw

And an ASCO proportional valve with 24V DC requirement.

I know that the arduino will supply 5V on its own through normal connection with the USB, and I believe that I can power both of the 5V devices directly from the 5V pin on the arduino itself, but will I also be able to power the valves from a single 24V power source? Or will I need a separate supply for the 12V and 24V valves?

I am an electronics and arduino newbie and any advice is appreciated. I'd really hate to turn my equipment into desk ornaments, or worse.

Please help!

2

Hi,
Here is an unfinished page/article that may help :

[b]Arduino-Project-Planning-Electrical[/b]
How to make all your electrical parts play well together as part of your system.

A little preview:
OK, you have an interesting project in mind, you have acquired the components you feel you need, and you've wired them together. You have written a sketch and uploaded it to Arduino. What could go wrong?

Problems: Sometimes, especially when controlling lights and other loads such as motors, pumps, solenoids etc., problems occur. Symptoms may include:

  • Lockup of the Arduino controlling the relays and switching. Everything just stops.
  • Loss of ability to communicate with a PC connected to the Arduino by USB
  • Noise and erroneous readings on sensors or attached devices when relays or loads are switched
  • LCD display stops working or displays the wrong characters

Any comments/suggestions appreciated. I'm actively working on this..