Data Sheet
Ref. IS.MDUINO.XXX 
*NOTE: Autoreset. Arduino mega has auto reset when using serial communication code. Set switch to OFF when using 
serial communication. When uploading code to Arduino Mega set switch to ON.  
Base 
(common unit) 
A Zone 
M-Duino 
Connector
Arduino Pin
Function
AREF 
IOREF2 
IOREF1 
7Vdc 
Gnd 
3.3Vdc 
GND 
5Vdc 
GND 
AREF 
IOREF2 
IOREF1 
7Vdc 
Gnd 
3.3Vdc 
Gnd 
5Vdc 
Gnd 
Arduino PIN 
Arduino PIN 
Arduino PIN 
- 
GND 
Arduino PIN 
GND 
- 
GND 
Ethernet Arduino  Power 
Connector Reset button  
 USB programmer Autoreset 
       connector     










