Multiple DMD with single external 5v power supply

The Dot Matrix Display (DMD) is a 32x16 array of high-brightness LEDs for visually striking effects. [Product Page]
Post Reply
dtbaker
Posts: 26
Joined: Sat Jun 02, 2012 12:52 pm

Multiple DMD with single external 5v power supply

Post by dtbaker » Mon Jun 11, 2012 7:09 am

Hey all,

Just after some clarification on what type of power supplies should be used (or avoided) when trying to power two DMD's.

I have a couple of old mobile phone chargers here that are rated at 5v. One has 5v/500mA written on it, the other has 5v/800mA written on it. Will any of these be worth cutting up and powering the DMD boards?

Any other suggestions for external DMD power other than using an old computer PSU? Or is there something available from jaycar that could power a standalone arduino and a couple of DMD displays from a single power pack?

Thanks guys!
Dave

Aussie_Wombat
Posts: 51
Joined: Tue May 22, 2012 12:52 pm
Location: Adelaide, South Australia

Re: Multiple DMD with single external 5v power supply

Post by Aussie_Wombat » Mon Jun 11, 2012 7:38 am

I went to altronics and bought a 5v 4A plugpack to power 3 dmd's. Doesn't get warm yet. still too bright for my camera ....

Cheers Dennis

User avatar
Simon
Posts: 25
Joined: Wed May 02, 2012 2:40 am

Re: Multiple DMD with single external 5v power supply

Post by Simon » Mon Jun 11, 2012 11:19 am

I'm running 2x DMDs off a 5V 3A (I think, it might be 2A) switch-mode supply from a dead external USB HDD enclosure. They're bright... too bright to photograph.

Post Reply