Datasheet

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1.2 Comparison

There are some differences between a normal Arduino-Uno and the GertDuino.

Table 1: Comparison GertDuino vs Arduino-Uno

1.3 Vext

As the board does not have a separate supply the Vext is not connected. If you want it

connected you have to add the following components:

J1, L4 (or a short instead of L4), D20 (or a short instead of D20).

2 RS232/UART

The Gerduino board has a RS232 level converter which will convert the signals form a UART to

the RS232 standard voltages (And invert them as per that same standard). The RS232 signals

come from J12.

Pin 3 is the receive

Pin 2 is the transmit

Pin 1 is the ground

Function

Arduino-Uno

GertDuino

USB

Slave interface

Reset button

Yes

Power supply

7..12V, ~250mA

<5V Raspberry-Pi>

3V3 supply

~50mA

~150mA.

LED's

One Not-buffered

Six Buffered

User pushbuttons

Two

RS232 buffer

Yes

Real-Time-Clock

Yes

Infra-red interface

Yes