Post by thetechnobear on Oct 14, 2018 22:35:49 GMT
for robertlanger , but may be interesting for others...
my new ArdMod draws power from the AE ribbon, straight into 5v on the Nano.
but I can also plug the ArdMod into USB to program it (still connected to AEM ribbon),
all good as the nano spec says, it will choose between VIN, 5v, USB depending on highest voltage - so thats all good.
BUT... I noticed if I remove the AEM power supply, the AEM still remains powered - from the USB of the nano!
ok, no harm done, and I guess as long as we stay below 500mA or so, it'll be fine. (an interesting way to power a small system
)
but i guess im thinking now perhaps what I should do is put a diode (any spec?!) from the ribbon to +5v?
e.g.
AEM ribbon +5 -> diode -> +5v nano -> others components/ics
presumably then the diode would stop reverse current, going back onto the ribbon, and so powering the AEM.
kind of related ...
with Eurorack, presumably I could remove the Master unit, and just power directly from the Eurorack 5v (and GND) on the ribbon? (Ive got a pittburgh structure 360 , so got 5A of 5v, so plenty to spare)
or do you think this might introduce noise onto the eurorack rail?
really just wondering how to optimise the space in the Eurorack case, so removing a master module saves 2HP (and Ive a 4IO there for cv already)
in a similar, (but opposite!) vain, I assume the master module in the eurorack adapter could be used to drive 2 adapters (thru the second connector, as is done in 2 row AE case), assuming I had the right angled ribbon cable.
(its actually a bit more flexible in my case to have two 8U adapters, than 1x16U adapter, also means you an use shorter patch wires)
(ps. its a bit confusing we call width U in AEM , as in eurorack U is a measure of height, whereas HP is a measure of width )
my new ArdMod draws power from the AE ribbon, straight into 5v on the Nano.
but I can also plug the ArdMod into USB to program it (still connected to AEM ribbon),
all good as the nano spec says, it will choose between VIN, 5v, USB depending on highest voltage - so thats all good.
BUT... I noticed if I remove the AEM power supply, the AEM still remains powered - from the USB of the nano!
ok, no harm done, and I guess as long as we stay below 500mA or so, it'll be fine. (an interesting way to power a small system
) but i guess im thinking now perhaps what I should do is put a diode (any spec?!) from the ribbon to +5v?
e.g.
AEM ribbon +5 -> diode -> +5v nano -> others components/ics
presumably then the diode would stop reverse current, going back onto the ribbon, and so powering the AEM.
kind of related ...
with Eurorack, presumably I could remove the Master unit, and just power directly from the Eurorack 5v (and GND) on the ribbon? (Ive got a pittburgh structure 360 , so got 5A of 5v, so plenty to spare)
or do you think this might introduce noise onto the eurorack rail?
really just wondering how to optimise the space in the Eurorack case, so removing a master module saves 2HP (and Ive a 4IO there for cv already)
in a similar, (but opposite!) vain, I assume the master module in the eurorack adapter could be used to drive 2 adapters (thru the second connector, as is done in 2 row AE case), assuming I had the right angled ribbon cable.
(its actually a bit more flexible in my case to have two 8U adapters, than 1x16U adapter, also means you an use shorter patch wires)
(ps. its a bit confusing we call width U in AEM , as in eurorack U is a measure of height, whereas HP is a measure of width
) 
