Terminal emulator.

Projects General Guidance
1

Hi , what i would like is to use a mega ADK or mega + usb host to interface to a standard usb qwerty keyboard

Anyone know if this has been done please ?

Basically i want to be able to send keypresses to a serial port at various baudrates for hacking purposes.

EDIT

Fwiw i currently have the redpark serial terminal on my ipad which i use 'in the field'

I would like to do the same with a proper keyboard.

For now i am only interested in the send hardware.

2

A USB keyboard is designed to work with a USB host and an Arduino is not a USB host. There is an Arduino USB Host Shield but I don't know if it is programmed to recognize a USB keyboard.

The USB system is physically simple but very complex behind the scenes.

Have you considered getting an old keyboard with a serial connection?

...R

3

There are several keyboard projects in the playground
http://playground.arduino.cc/Main/InterfacingWithHardware#keyb
There are lots of PS2 keyboard interfaces and one USB project using a cheap commercial board.

4

Thanks for the replies.

In searching th e net i have found similar questions with no apparent answers.

PS2 keyboard solutions seem to exist.

USB host shields exist and i have an earlier mega ADK with host USB on board.

Using the USB library example does not seem to work, either it is bust or possibly i have the wrong library.

Waiting on a new board to check.

I am surprised that this has not been addressed and solved before though.

5

Boardburner2:
Basically i want to be able to send keypresses to a serial port at various baudrates for hacking purposes.

What are you trying to hack into ?

6

Currently its a laser rangefinder, but i would like a generic portable terminal keyboard for talking to legacy ports on old equipment.

7

Grumpy_Mike:
There are lots of PS2 keyboard interfaces and one USB project using a cheap commercial board.
Plug USB keyboards into microprocessors easily- UsbKbdToSerial

Reading the spec makes me think that specific firmware is needed to talk to a keyboard.

Perhaps that is where i am going wrong.

8

You need to load the USB keyboard to serial TTL module if that is not the default. It depends on where you want to use the TTL serial output.