lcd + arduino

Other Hardware Displays
1

Good afternoon,
I have a HD44780 LCD and an Arduino Duemilanove 2009, and wanted to try the following.

Arduino ----- to connect only one wire------- lcd

Thus it is impossible to know directly, wanted to know suggestions using integrated, so that that only one wire to connect arduino to send things to the lcd

arduino ------- to connect only one wire-------[Whatever it takes to work] ----- lcd

thanks

2

Not tested, but the 1-wire port expander DS2408 could be an option.

Oliver

3

arduino ------- to connect only one wire-------[Whatever it takes to work] ----- lcd

Why?

You will need a minimum of a signal wire and a ground wire.

One way to do it with one wire is to have an LCD with a serial interface.

but the 1-wire port expander DS2408 could be an option.

It will be very slow.

Plenty of options if you want two signal wires and a ground.

4

Sink your teeth into this -

5

Good night

I have a wireless doorbell and the column burned. So I did some experiments with the led.
the button is touch the doorbell I called Arduino with program turning on and off the LED.

At the doorbell where played music, plug the led and connect and worked turning on and off the LED

Then I managed to raise and lower the intensity of the LED.
Now I wanted to connect the lcd.

I will also investigate the shift but at first glance are percise 3 wires

6

Use a serial LCD so only one wire plus ground, power.