Go to advanced search

by Donald Becker
Thu Mar 08, 2012 8:18 pm
Forum: Other projects
Topic: CAN Interface
Replies: 103
Views: 102974

Re: CAN Interface

<t>dega said:<br/> <br/> <br/> I don't see the problem of the voltages that someone was mentioning though:<br/> <br/> the MCP2515 is 3.3V compatible,<br/> <br/> there are CAN transceivers that work at 3.3V, like the SN65HVD230D for example.<br/> <br/> Won't this be enough to interface the RPi with a...
by Donald Becker
Thu Dec 29, 2011 8:06 pm
Forum: Other projects
Topic: Can the R-Pi be stacked?
Replies: 5
Views: 2156

Re: Can the R-Pi be stacked?

<t>Cheap, but not effective.<br/> <br/> The 10/100 Ethernet is pretty slow, but the real problem is the high latency.<br/> <br/> The Ethernet controller is connected by USB.  It's actually part of the USB hub chip, and acts exactly as if you had plugged in an USB-Ethernet adapter to an external USB ...
by Donald Becker
Thu Dec 01, 2011 2:58 am
Forum: General discussion
Topic: GPIO pinouts confirmed
Replies: 43
Views: 6379

Re: GPIO pinouts confirmed

<t>My interpretation is that the GPIO header has logic-level serial I/O.<br/> That\'s basically \"RS232\", but requires inverting input and output drivers.<br/> <br/> An output driver converts a 0V output to about +9V, and a 3V output to about -9V. It does the reverse on the Rx side, cleaning up noi...

Go to advanced search