Anyone using a wiznet http://www.nkcelectronics.com/wiznet-wiz812mj-tcpip-network-mod812.html directly with an Arduino (without the shield)? If so I'd appreciate some guidance as to wiring it up. I'd like to connect it to a RBBB. Thanks
Sure, I am. Its a mess of wires but if you have any female to male or female to female jumpers its pretty easy. I use this post as a reference as well as the wiznet datasheet http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1193246617/24 As i have it now, it runs 9 jumper wires into a breadboard my nano is plugged into. Both 3.3v pins on the module go to a separate 3.3v regulator, both grounds go to common ground on the breadboard, Mosi to pin11, Miso to pin12, sclk to pin 13, scs to pin 10, and reset to pin 8 (optional but toggling the reset in the setup of every sketch makes the ethernet module much more reliable IMHO).
Seems straightforward enough. I'm going to give it a go. Thanks! BTW, the link didn't work.
Sorry, fixed it. Lemme know how it works
I finally got around to this. I'm using an XBee shield to power the wiznet. At first I had a problem with the reset.
digitalWrite(resetPin, LOW);
pinMode(resetPin, OUTPUT);
delayMicroseconds(5);
pinMode(resetPin, INPUT);
This didn't work. Although if I manually connected the reset pin to GND, it did reset. Then I placed a resistor between the Arduino pin and the reset and it worked. If anyone can explain why the resistor is needed, that'd be great.
Also I noticed that the 1s delay after Ethernet.begin and before client.conect in the Client example doesn't always seem to be enough. Does anyone know if there is a more reliable to method to know when the device is ready? Something like a pin that would go to 3.3v.
Andrew