Tag Archives: layout

Eagle: Approach to print a layout repeatedly to a page

Hi,

Eagle does not offer a possibility to print a PCB layout repeatedly to a page. Also the copy & paste approach is limited to the max. board size and therefore depending on the license.

A possible way is to export the layout of the PCB to an .png file, import the image to GIMP and duplicate them.
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Raspberry PI: Connecting a HD44780 Display over I2C Bus

Hi everybody,

some application, i.e. XBMC can show informations on a display by using LCDproc as driver.

This post describes a way to connect a HD44780 display to a Raspberry PI  by i2c bus.

Let’s start with the physical layer. This is the overview schematic on how to connect the display to a Raspberry PI.

Connecting a hd44780 Display with Raspberry PI
Connecting a hd44780 Display with Raspberry PI

Based on these I developed small board with a 6 Pin header which is Pin compatible to the Raspberry PI. So a simple 6 pole ribbon cable can be used to connect the HD44780 Display to the fruit.
Here is my PCB. First the schematic.

Board schematic

and my board layout. Unfortunately there are a lot HD44780 models available and the location and the direction of the pins are different, so you have to adapt the layout to the specification of your display.
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