ANSWERED Coolrunner/cygnos on/off relay help

smithisize

Full Member
Mar 6, 2011
50
0
Ok, I couldn't post this in the coolrunner section (post count), so I'll post here :)

Anyways, I have a dual boot setup working nicely right now (coolrunner, cygnos rev d with the glitch image on the cygnos, stock onboard) and everything runs well.

I've seen on other forums setups with other chips which allow the coolrunner to be shut off when the cygnos is shut off as well, as seen here:



I was wondering if someone could aid me in doing this with the coolrunner?

Many thanks!

smith

EDIT: I believe I understand how this works, on a basic level. I just don't know one thing: coolrunner doesn't have a clear VCC pad on it... I lack understanding in electrical components and workings, but would the 3.3v pad seve as a VCC pad in this instance? Or is one of the unused E or F pads the VCC on the coolrunner?
EDIT 2: According to wikipedia, VCC is generally the positive voltage (3.3v) and gnd is the negative voltage
 
Last edited:
  • Like
Reactions: mechgamer123

mechgamer123

VIP Member
Sep 11, 2011
183
0
I believe the relay is in place so that when the cygnos is switched to the console's nand (no blue light) then the relay keeps power from the coolrunner, but when the switch if flipped to the cygnos nand (Blue light is on) it allows power to the coolrunner. Also, thanks for posting the image!
 

smithisize

Full Member
Mar 6, 2011
50
0
I wired that up using 3v3 pt as the VCC and the relay works perfectly.

However, don't wire the ground to the gnd point on the coolrunner, the voltage from the relay doesn't drain quickly enough and the coolrunner still powers on sometimes. Just solder it to the AV case, like the coolrunner.

smith
 
  • Like
Reactions: Heronimoh