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Topic: Wrong ethernet module? 12 pins on ENC28J60 (Read 2304 times) previous topic - next topic


Attempting my first network connection to my pro mini clone and I am not finding the correct pins on my ethernet module (see pic).

Most modules have (10) pins, but this one has (12).  The kicker is that there is no SI pin, and a bunch of pins that are unknown to me.    LNT  ST  Q3

Of course, the seller is overseas and could not provide any help/pinout/specification sheets aside from this brief description:

    Brand new and high quality.
    chip board ENC28J60-I/SO.
    the board 25MHZ crystal.
    the network interface board HR911105A.
    3.3 V power supply pin.
    Size:5.2cm x 1.9cm - 2.05inch x 0.75inch.

I am under the assumption that this is an unusual  and possibly mis-identified module.   I want to ask if anyone has any experience with it before I proceed.  If this hardware is discussed elsewhere I apologize for being unable to find it (there is a plethora of the info for the 10-pin modules).


I will try the following pin translation when I free up later this week:
   ST = SI
  Q3 = 3.3V

If anyone has had any experience with the 12 pin version please chime in.  If it is just silkscreen errors that would be great.


Oct 27, 2014, 04:47 pm Last Edit: Oct 27, 2014, 08:10 pm by walnuss0815

I've tested with a digital multimeter:

Q3 = 3.3V


Sorry for asking, but did you find out the wiring scheme of this 12 pins Ethernet and the arduino uno?


Hello, I have the same problems. Any solution?


I bough this component too, I couldn't make it work!!! I tried several libraries but it didn't work, I tried to edit some .cpp and .h files, but no success.
I have a mega2560, the IDE  I used was 1.0.5 and the last one 1.6.4.

Were you able to make it work???? How did you do??

thank you very much


Aug 05, 2015, 01:12 am Last Edit: Aug 05, 2015, 01:48 am by Gildas
It works!!!
    IDE: 1.0.6
    Library: ethercard (https://codeload.github.com/jcw/ethercard/zip/master)
    Sketch: Examples/ethercard/backSoon
    Arduino: Duemilanove
    12 Pins ENC28J60 Module: HanRun HR911105A 14/10 (module.jpg)
    Power Supply (power_supply_1.jpg and power_supply_2.jpg)
Arduino     Module
digital 12     SO
digital 11     ST
digital 13     SCK
digital 8     CS
5V     5V
Gnd     GND

  It was not working until I plugged the power supply!

  I hope it will help...

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