Croduino with Ethernet Shield power requirements from USB

TECHNICAL SUPPORT NULA Development Boards
1

Customer:

When connecting a Croduino and Ethernet Shield, is it correct to power both boards from a USB port (from a PC), which I’m also using for communication? I’m not sure if that’s safe - I don’t want to overload the Croduino’s power supply. If that’s not recommended, I would power the Ethernet Shield from an external 5VDC supply and the Croduino from USB.

Original message (Croatian)

Samo bih vas molio za još jednu informaciju:

Kada se spoje Croduino i ethernet shield da li je korektno da se obje pločice napajaju s USB priključka (iz PCa), a koja mi ujedno služi i za vizualizaciju.

Nisam siguran da li je to u redu – kako ne bi previše opteretio napajanje Croduina.

U slučaju da se to ne preporuča, onda bi Ethernet shield napajao iz vanjskog 5VDC napajanja, a Croduino iz USBa.

Hvala vam na pomoći. LP,

[name removed]

Attachment omitted in migration: image001.jpg

Originally submitted via the contact form on soldered.com on 2 January 2018. Migrated to the forum for community visibility.

2

Soldered Support:

Both boards power directly from the USB port on your computer, so none of the Croduino’s hardware participates in that power delivery. USB 2.0 can provide 500mA, which is completely fine for Croduino + Ethernet Shield. If you add additional components, check their power consumption. For your current setup, everything is fine.

Original message (Croatian)

napajaju se direktno iz USBa na Vašem računalu, tako da ništa od hardware-a na Croduinu ne sudjeluje u tom napajanju.

USB 2.0. može dati 500mA, a za Croduino + Ethernet shield je to sasvim u redu. Ako budete spajali neke dodatne stvari, provjerite potrošnju. Trenutno - sve okej!