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12v and 5v lights and a raspberry pi
thefox:
Quick question please. I am in the process of converting my cab from a tired old PC to a raspberry pi. I would like to keep new parts to a minimum where possible. I have a 12v cold cathode marquee light and a 5v LED illuminated fake coin button (I think it was from ultimarc ? Can't find a link so I assume they aren't available nowadays).
Anyway, how would you recommend powering these ? Can I connect the 5v button to the pi? Or shall I get a powered USB hub and hack it from there ? What power supply would be god for the cathode ? Or would I be better replacing it with LED ?
I'm thinking of connecting each to a power strip inside the box. Haven't worked out how to power it all on/off with one button push yet though.
Any help would be very appreciated.
Osirus23:
I would power them from a tired old PC power supply with convenient 12v and 5v rails at the ready.
PL1:
--- Quote from: thefox on March 12, 2018, 05:29:29 pm ---5v LED illuminated fake coin button (I think it was from ultimarc ? Can't find a link so I assume they aren't available nowadays).
--- End quote ---
Looks like RandyT has replaced the NovaGemCDR with the HelioGemCDR.
http://groovygamegear.com/webstore/index.php?main_page=index&cPath=89
--- Quote from: thefox on March 12, 2018, 05:29:29 pm ---Can I connect the 5v button to the pi? Or shall I get a powered USB hub and hack it from there ?
--- End quote ---
The NovaGemCDR draws a lot of current for powering it through the pi.
--- Quote ---Power Requirements:
Nova Single color: 100ma @ 5v DC Per button.
--- End quote ---
Seems like either the powered USB hub, a separate 5v power supply, or Osirus23's suggestion of a computer PSU (maybe a pico PSU?) to power everything would be a better option.
Scott
thefox:
Thanks for the advice guys. Sounds like the psu is the way to go. The one I have is an old beast with a noisy fan, and might be a bit OTT for what I need. I'll hook it up for now but I think I'll order an 80w Pico. I need to look into whether I can power the pi from it too.
PL1:
--- Quote from: thefox on March 13, 2018, 04:33:29 am ---I think I'll order an 80w Pico. I need to look into whether I can power the pi from it too.
--- End quote ---
Yes you can.
Related video.
Scott