Arduino Nano Mini Expansion Board (ANMEB)

The point of the Arduino Nano is that it is small. So, we figured an expansion board for it should be small as well.

The Arduino Nano Mini Expansion Board (ANMEB) is the same size as the Arudino Nano (shown but not included). So you don't have to increase the footprint of your project. Dimensions are 43.18mm x 17.78mm x 1.6mm thick.

There are four variants of the ANMEB (detailed below). All variants have the same connections. All the connections on the Arduino Nano are available on the ANMEB.

The bottom two rows differ from the normal 5 columns (shown at the right).

The bottom row has the signals for serial communication together in one row. These are +5V, GND, TX0 and RX0.
This allows connection of serial communication to an exernal device using one 4 pin socket as shown below.

The row above the bottom row has the signals needed for I2C communication in one row. These are +5V, GND, SDA, SCK and SCL.
This allows connection of I2C communication to an exernal device using one 5 pin socket as shown below.

There are 5 columns of headers on each ANMEB:

The outer columns are +5V (+5V).
The next columns in are the signals from their respective sides of the Arduino Nano (Sig).
The middle column is ground (GND).

For Analog to Digital conversion, the AREF signal is often connected to +5V. This is facilitated by these two signals being next to eachother so that a jumper can be place across them as shown below.

Most sensors and actuators for Arduinos require a +5V, Signal and GND connection. This is connected using a 3 pin connector on any signal as shown below.

If two signals from the same row of headers require connection, a 4 pin connector will accomplish this as show below.

The four variants of the ANMEB are as follows:

Variant 1: For prototyping, there is the Headers and Sockets variant. ANMEB(HS)
This allows the user to check the function of his/her circuits quickly and easily with no soldering on the Expansion Board.

Once the circuit is determined to work properly, we offer 3 other variants which can be used to take the least amount of stacking space.

Variant 2: The second variant has Headers but no sockets. ANMEB(H)
This allows the stack of the Arduino Nano and the ANMEB to be shorter and use less space by omitting the headers. This requires the ANMEB to be soldered onto the pins of the Arduino Nano.

Variant 3: The third variant has Sockets but no headers. ANMEB(S)
This allows the stack of the Arduino Nano and the ANMEB to be shorter and use less space by omitting the headers. This requires the I/O wires to be soldered onto the ANMEB. This variant plugs into the Arduino Nano using normal Sockets.

Note that if your stacking space is really tight and you only have a few wires to connect, they can be soldered into the top of the ANMEB and run out between the ANMEB and the Arduino Nano.

Variant 4: The third variant has no sockets but no headers. ANMEB(bare)
This allows the smallest use of space for the stacked Arduino Nano and the ANMEB.
The I/O wires must be soldered onto the ANMEB and the ANMEB must be soldered onto the pins of the Arduino Nano.

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	Arduino Nano Mini Expansion Board - Headers and Sockets
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These connectors are known as Dupont Connectors
Here is a kit that has the works:

Dupont Connector Kit With Crimp Tool

Or you can buy the pieces separately:

Crimp Connectors:

Harwin M20 Series Connector Housings:

1 connector:

Jumpere Wires with connectors:

Jumpers with 2 connections

Jumpers with 3 connections

Jumpers with 4 connections

Jumpers with 5 connections

Note that the wires can be removed from the connectors and rearranged by lifting the small tabs on the connectors very slightly and sliding the wires out.

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