Overview

The eProto provides an easy and quick method to interface custom electronics to the iRobot Create Command Module. The eProto plugs into any of the Command Module's four ePorts. Each of the DB-9 ePort pins are routed to individual solder pads on the board for easy connection. Multiple power and ground pads are provided. A grid of holes on standard 0.1" (2.54mm) centers provide a small area for building custom circuits.

The eProto requires soldering. It is most suited for advanced Command Module users who have experience with designing and building custom electronic circuits. The eProto kit comes with an unassembled circuit board and a DB-9 male connector. The first assembly step is to solder the DB-9 connector to the bottom side of the circuit board or the side opposite the white silk screen print. The eProto can then be connected to any of the ePorts.

IO Markings

Each of the ePort signal lines are brought out to solder pads on the eProto. The solder pads are marked with a number representing the DB-9 pin number for IO lines and with an abreviation for power connections.

IO Connection Table

Marking	Left ePort		Right ePort		Center ePort		Cargo Bay ePort
1	ADC Input	ADC7	ADC Input	ADC6	Dig I/O or ADC Input	PC5 / ADC5	Dig I/O or ADC Input	PC4 / ADC4
2	Digital I/O or ADC	PC3 / ADC3	Digital I/O or ADC	PC2 / ADC2	Digital I/O or ADC	PC1 / ADC1	Digital I/O or ADC	PC0 / ADC0
3	Digital I/O	PB3	Digital I/O	PB2	Digital I/O	PB1	Digital I/O	PB0
6		NC		NC		NC		NC
8		NC		NC		NC	Low Side Driver	LD1
9	Low Side Driver	LD0	Low Side Driver	LD0	Low Side Driver	LD0	Low Side Driver	LD2
+5V	Regulated 5V when Create is turned on (ePort Pin 4 / Vcc)
Batt	Create Battery Voltage when Create is turned on (ePort Pin 7 / Vpwr)
Gnd	Ground (ePort Pin 5)

I/O Abbreviation Notes:

• ADC Input - Analog to Digital Convertor Input
• Digtial I/O - Digital Input or Output
• Low Side Driver - Open Collector high current driver output
• +5V and Batt are turned on and off by the create power button. They are not controlled by the power switch on the Command Module.

An ePort IO Quick Reference is available for download.

The documentation is presented as a wiki so that you can add your own helpful information about using the product or correct any errors you might find on the site. Please get involved. If you are experiencing problems with your Element Direct product or if you'd like to discuss it with other users, please go to the support forum.