RE: What's the maximum amount of current which I can draw from the 3,3V line on RiotBoard

shabaz — Thu, 10 Mar 2016 18:17:32 GMT

Hi Karel,

The RIoTboard has published schematics, and according to that there is a 3.5A capable 3.3v DC-DC converter there, but the power is shared with other subsystems on the board.

[mention:319b02bef1c74927bdc16bd8c7b0e484:e9ed411860ed4f2ba0265705b8793d05] can keep me honest.

Anyway, from the 5V DC input jack, there is also a fuse on-board (I didn't check in detail if it was a resettable fuse) which will limit you to around 1A overall for the entire board.

This thread RioTboard Power Consumption has very useful figures, including current consumption of the board with an off-the-shelf LVDS display (available from Farnell/Newark).

RE: What's the maximum amount of current which I can draw from the 3,3V line on RiotBoard

clem57 — Thu, 10 Mar 2016 17:15:30 GMT

I know this is not the Riotboard, but this should be a ball park area:

http://www.element14.com/community/message/58840#58828

50 mA is for the 3.3V power pin (P1-01) which is the output of RasPi's 3.3V regulator RG2. You can use it for +3.3V ICs and pull-ups on an external board provided that the total current is under 50 mAI